Solar Hydrogen Generation For Energy Storage
|
|
- Collin Little
- 8 years ago
- Views:
Transcription
1 Solar Hydrogen Generation For Energy Storage Laura Meda Istituto eni-donegani Via Fauser 4, Novara NANOTECHITALY- 2012
2 Solar Energy Conversion Strategies Light Fuels Chemicals Electricity CO 2 Sugar O 2 e H 2 e H O 2 O 2 Photosynthesis sc H2O M Semiconductor/Liquid Junctions n p Photovoltaics [N.S. Lewis, D.G. Nocera, Powering the Planet, Proc. Nat. Acad. Sci. USA 103 (43) 2006, 15729]
3 Water Splitting in a PEC cell SUN ENERGY CHEMICAL ENERGY Semiconductor materials can absorb sunlight; generate carriers; promote redox reactions with water O2 e - H 2 H 2 O 2 e - e - H 2 metal H 2 O h + OH - H +
4 Possible applications of photosplitting technology Electricity : solar H2 in fuel cell to generate electricity off-grid Energy Storage : accumulation of chemical energy in flow batteries Environment : photo-redox reactions of wastewater Fuels : reaction with CO2 to fuels Automotive : addition to CH4 in vehicles to decrease emissions 4
5 Glass Conductive support Pt Counter-electrode Energetic diagrams hν + semic. e - + h + 2 H 2 O + 4 h + O H e - 4 H e - 2 H hν + semic. + 2 H 2 O O H 2 G = kj/mol V bias e - e - e - 2H 2 O+2e - 2OH - +H 2 Light 1.23 ev h + 2OH - +2h + H 2 O+1/2O 2 Semiconductor Electrolyte 0 L b x
6 Semiconductor Candidates [M. Gratzel, Nature 414 (2001) 338] Low bandgap Good harvesting; Scarce stability High bandgap Scarce harvesting; Good stability ph 1 Thermodynamic request 1.23 ev Kinetic losses & overpotentials E g > 2 ev [K. Rajeshwar, J. Appl. Electrochem.37 (2007) 765]
7 Nanostructured Photo-electrodes WO3 solgel Xstal domains nm Area max. 100 cm 2 Fe2O3 + Ti spray Xstal domains nm Area max. 100 cm 2 TiO2 -anodic Xstal domains nm Area max. 150 cm 2 WO3 -anodic Xstal domains nm Area max. 150 cm 2
8 Sol-gel nanostructures AFM SEM Strato attivo TCO vetro 10 x 10 cm2 From tungstate salts to acidic solution + colloidal dispersion and gelification + blade deposition on conductive glass (FTO) + final calcination (450 C 650 C) [L. Meda, G. Tozzola, A.Tacca, G. Marra, et al, SOLMAT 94 (2010) 788]
9 Electro-anodized nanostructures 30 V Ti: EG + NH4F, RT + calc. 500 C W: H2O + NMF + NH4F, 40 C + calc. 500 C [A.Tacca, L. Meda, G.Marra, A. Savoini, S. Caramori et al, Chem. Phys. Chem. 13 (2012) 3025] [V.Cristino, S. Caramori, CA. Bignozzi, L. Meda, G. Marra, Langmuir (2011)]
10 Absorbance Absorbance Spray deposited Nanostructures Fe2O3 + Ti 5% Solutions sprayed on FTO at high temperature (> 400 C) Subtraction Result:*30202/ Subtraction Result:*30202/85 Subtraction Result:*30202/ Subtraction Result:*30202/81 Subtraction Result:*30202/80 Subtraction Result:*30202/87A 2.0 6, 10, 15, 20, 30 steps Photoanode on FTO Wavelength (nm) Wavelength
11 Current-voltage measurement and gas collection under solar simulated illumination N2 carrier Voltmetro Amperometro Counter O2 Counter H2 Gas cromatograph O2 H2 ABET Tech. solar simulator 550W AM 1.5G filtered 10x10 cm2 uniform area Photo anode Catode
12 The best for Fe2O3 CVD deposited + IrO2 catalyst S.D. Tilley, M. Cornuz, K. Sivula, and M. Graetzel
13 The best for WO3 and Fe2O3 tandem cells Colloidal sol-gel a) WO 3 TANDEM CELL. B) Fe 2 O 3 TANDEM CELL. B.D. Alexander, P.J. Kulesza, I. Rutkowska, R. Solarska, J. Augustynski J. Mater. Chem. 18 (2008) 2298 J. Brillet, J-H Yum, M. Cornuz, T. Hisatomi, R. Solarska, J. Augustynski, M. Graetzel, K. Sivula, Nature Photonics (2012) doi: /nphoton
14 J(mA/cm 2 ) Anodized WO M H 2 SO 4 1M H 2 SO 4 /MeOH 8/ ,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 V (V vs SCE) S. Caramori, V. Cristino, C.A. Bignozzi, L.Meda, Topics in Current Chem. Vol. 303 (2011), 215 V. Cristino, S. Caramori, CA. Bignozzi, L. Meda Langmuir 27(11) 2011, 7276 A. Tacca, L. Meda,G. Marra, A. Savoini, S. Caramori, V. Cristino, C. Bignozzi, S. Gimenez, J. Bisquert Chem PhysChem, 13(12) 2012,
15 Wastewater treatment & H2 photoproduction if the hydrogen production can be combined with waste water treatment, then the systems become economically viable [ M. R. Hoffmann et al., Solar-Powered Electrochemical Oxidation of Organic Compounds Coupled with the Cathodic Production of Molecular Hydrogen, J. Phys. Chem. A 7616, 2008, 112, 7616 ] He C. et al. J. of Photochemistry and Photobiology A: Chemistry 157 (2003) Enright P. et al. J. Appl. Electrochem, DOI: /s ,
16
17
18 Catalysts on triple-junction PV wireless device PV -Xunlight (OH, USA) Oper. Voltage = 1.65 V Oper. Current = 5.5 ma/cm2 Voc = 2.2 V M. Kanan, D. Nocera, Science 321 (2008) 1072 D. Nocera, Acc. of Chem. Res Catalyst Depo. Technique Photocurrent (ma/cm 2 0V bias Resa globale (%) STH Co-ox ELET 0,5 1,0 1,2 FeOOH ELET 0,1 0,5 0,6 FeOOH IMPR 1,0-2,0 2,5 NiO IMPR 0,5 1,5 1,9 18
19 IPCE % Efficiencies : Energy OUT / Energy IN Quantum Efficiency = electrons / photons IPCE SPECTRA OF WO 3 PHOTOANODES anodically grown at 1V vs SCE anodically grown at 1V vs SCE colloidal at 1.5 V vs SCE (V nm) x J (ma/cm 2 ) IPCE % = P (mw/cm 2 ) x λ (nm) % UV 40 % Vis (nm) Global Efficiency STH (energy gain) J x ( V - V bias ) STH % {A.M. 1.5} = x 100 P = 3,15 % J = 5 ma/cm 2 V = 1,23 V V bias = 0,6 V P (1 sun) = 100 mw/cm 2 Z. Chen et al., J. Mater. Res. 25 (2010) 3
20 Efficiency for a PEC I e Light on The pink area represents the power spent by the applied bias. Dark The blue area represents the power stored as hydrogen. The grey area is the power spent for electrolysis. I PEC The sum pink + blue areas represents the global stored power. V PEC 1,23 V EL Storage Efficiency (total power converted in stored chemical energy) J x 1,23 STO. EFF. % {A.M. 1.5} = x 100 = 6,15 % J = 5 ma/cm 2 P V = 1,23 V V bias = 0,6 V P (1 sun) = 100 mw/cm 2
21 From photocurrent density to evolved H2 J A-C [ A moli] [moli H2 ] = Fa [cm 2 coulomb] [ s cm 2 ] 1 Fa = [coulomb/mole] 1 mole = [litri] For J A-C = 1 10 [ma /cm 2 ] The evolved H 2 = [ml/min 100 cm 2 ] = 4 40 [ l/h m 2 ] To feed a Fuel Cell (1W) => 14 [ml/min] are required
22 Outdoor demonstrators DEMO1 DEMO2 PEC cell PHOTO-CURRENT density H2 production PEC cell COST SOLAR H2 COST [ma/cm 2 ] [NL/h/m 2 ] [ /m 2 ] [ /kg] DEMO1 - TiO DEMO2 - WO EU target (2020)for solar H2 = 9.9 /kg
23 The electrolyzer Electricity is converted in chemical energy η = % (cm 3 /h - 10 m 3 /h) From PV η(sc) 14 % x η(el) % = η(tot) 6-10 % e - - e O 2 H 2 metal metal H 2 O H + H + H +
24 Comparison between PV+EL and PEC - - PV + EL Si-PV absorbs 60 % of solar spectrum Efficiency STH: 14% x 45-70% = 6-10 % High Energy dissipation Voltage required : > 2 V Solar H2 Cost : 30 /kg Lifetime 5 years PEC WO3 absorbs 9 % of solar spectrum Efficiency STH: 3 % Lower Energy dissipation Voltage required : < 1 V - zero Solar H2 Cost : /kg Lifetime years (?) Improvements are in PV efficiency... there are continuous improvements and 10% is not impossible
25 Cost considerations For PV+EL costs are reparted as 15% : 85% EL is the main cost because it uses noble metals electrodes and has short lifetime. PEC exploits solar energy to drive chimical reactions the requirement for water splitting voltage is reduced and so the cost is. Solar H2 PEC cost depends on materials, efficiency and duration: USA-DOE Final Report (2009) Techno economic Analysis of PEC H 2 Production by B.D. James, G.N. Baum, J. Perez, K.N. Baum.
26 Thanks to collaborators! I believe that water will one day be employed as fuel, that hydrogen and oxygen that constitute it will furnish an inexhaustible source of heat and light, of an intensity of which coal is not capable Water will be the coal of the future! From: L Ile mystérieuse by Jules Verne (1874) L. Abbondanza G. Bianchi R. Paglino R. Preda A. Romano F. Rubertelli F. Simone A. Tacca G. Tozzola
Solar Hydrogen Generation For Energy Storage. Laura Meda Istituto eni-donegani Via Fauser 4, Novara laura.meda@eni.com
Solar Hydrogen Generation For Energy Storage Laura Meda Istituto eni-donegani Via Fauser 4, Novara laura.meda@eni.com www.eni.it Energia e idrogeno: L esperienza italiana nel programma europeo Idrogeno
More informationA metal-free polymeric photocatalyst for hydrogen production from water under visible light
A metal-free polymeric photocatalyst for hydrogen production from water under visible light Xinchen Wang, Kazuhiko Maeda, Arne Thomas, Kazuhiro Takanabe, Gang Xin, Johan M. Carlsson, Kazunari Domen, Markus
More informationHETEROGENEOUS ELECTROPHOTOCATALYSIS ON NANOSTRUCTURED TiO 2 FOR REFRACTORY POLLUTANTS AND RESISTANT PATHOGENS REMOVAL FROM WATER AND WASTEWATER
DIIAR - Environmental Engineering Section HETEROGENEOUS ELECTROPHOTOCATALYSIS ON NANOSTRUCTURED TiO 2 FOR REFRACTORY POLLUTANTS AND RESISTANT PATHOGENS REMOVAL FROM WATER AND WASTEWATER SIDISA Summer School
More informationPractical Examples of Galvanic Cells
56 Practical Examples of Galvanic Cells There are many practical examples of galvanic cells in use in our everyday lives. We are familiar with batteries of all types. One of the most common is the lead-acid
More informationSearching New Materials for Energy Conversion and Energy Storage
Searching New Materials for Energy Conversion and Energy Storage ZÜRICH & COLLEGIU UM HELVE ETICUM R. NES SPER ETH 1. Renewable Energy 2. Solar Cells 3. Thermoelectricity 4. Fast High Energy Li-Ion Batteries
More informationSOLAR CELLS From light to electricity
SOLAR CELLS From light to electricity Solar Impulse uses nothing but light to power its motors. The effect of light on the material in solar panels allows them to produce the electricity that is needed
More informationPhotoelectrocatalytic Treatment and By-Product Formantion
Photoelectrocatalytic Treatment and By-Product Formantion Huseyin Selçuk (PhD) İstanbul University Environmental Engineering Department hselcuk@istanbul.edu.tr Istanbul University at a Glance The Oldest
More informationVega Spans and NiOx-TX Spans
Supporting Information: Si Photoanode Protected by Metal Modified ITO with Ultrathin NiO x for Solar Water Oxidation Ke Sun *a, Shaohua Shen b, Justin S. Cheung a, Xiaolu Pang c, Namseok Park a, Jigang
More informationRecent developments in solar water-splitting photocatalysis
Recent developments in solar water-splitting photocatalysis Frank E. Osterloh and Bruce A. Parkinson, Guest Editors Although photovoltaic cells have great potential for supplying carbon-free energy, they
More informationArtificial Photosynthesis: A Workshop in Solar Cell Design
Artificial Photosynthesis: A Workshop in Solar Cell Design Joseph P. Harney, Sam Toan, Jonathan Rochford* Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA
More informationENERGY CARRIERS AND CONVERSION SYSTEMS Vol. I - Alkaline Water Electrolysis - Isao Abe
ALKALINE WATER ELECTROLYSIS Isao Abe Office Tera, Chiba, Japan Keywords: Water electrolysis, alkaline, hydrogen, electrode, diaphragm, high pressure high temperature electrolyser, cell, electrocatalyst
More informationFuel Cell as a Green Energy Generator in Aerial Industry
Civil Aviation Technology College Fuel Cell as a Green Energy Generator in Aerial Industry Presented by: Mehdi Saghafi 16 April, 2012 Table of Content Introduction Principle & Performance of Fuel Cell
More informationSpectral Characterisation of Photovoltaic Devices Technical Note
Spectral Characterisation of Photovoltaic Devices Technical Note Introduction to PV This technical note provides an overview of the photovoltaic (PV) devices of today, and the spectral characterisation
More informationModeling Dye Sensitized Solar Cells Filippo De Angelis
Modeling Dye Sensitized Solar Cells Filippo De Angelis Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO) Istituto CNR di Scienze e Tecnologie Molecolari (ISTM), I-06123 Perugia, Italy Computational
More informationPhotovoltaic and Photoelectrochemical Solar Cells
Photovoltaic and Photoelectrochemical Solar Cells EDDIE FOROUZAN, PH.D. ARTIN ENGINEERING AND CONSULTING GROUP, INC. 7933 SILVERTON AVE. #715 SAN DIEGO, CA 92128 PSES San Diego Chapter 2012-02-10 History
More informationChapter 13: Electrochemistry. Electrochemistry. The study of the interchange of chemical and electrical energy.
Chapter 13: Electrochemistry Redox Reactions Galvanic Cells Cell Potentials Cell Potentials and Equilbrium Batteries Electrolysis Electrolysis and Stoichiometry Corrosion Prevention Electrochemistry The
More informationDiscovering Electrochemical Cells
Discovering Electrochemical Cells Part I Electrolytic Cells Many important industrial processes PGCC CHM 102 Cell Construction e e power conductive medium What chemical species would be present in a vessel
More informationCh 20 Electrochemistry: the study of the relationships between electricity and chemical reactions.
Ch 20 Electrochemistry: the study of the relationships between electricity and chemical reactions. In electrochemical reactions, electrons are transferred from one species to another. Learning goals and
More informationSolar power Availability of solar energy
Solar Energy Solar Energy is radiant energy produced in the sun as a result of nuclear fusion reactions. It is transmitted to the earth through space by electromagnetic radiation in quanta of energy called
More informationK + Cl - Metal M. Zinc 1.0 M M(NO
Redox and Electrochemistry This section should be fresh in your minds because we just did this section in the text. Closely related to electrochemistry is redox chemistry. Count on at least one question
More informationFirst Principles Computational Modelling of Solid/Liquid Interfaces for Solar Energy and Solar Fuels
First Principles Computational Modelling of Solid/Liquid Interfaces for Solar Energy and Solar Fuels Mariachiara Pastore Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO) Istituto CNR di
More informationProject 2B Building a Solar Cell (2): Solar Cell Performance
April. 15, 2010 Due April. 29, 2010 Project 2B Building a Solar Cell (2): Solar Cell Performance Objective: In this project we are going to experimentally measure the I-V characteristics, energy conversion
More information1332 CHAPTER 18 Sample Questions
1332 CHAPTER 18 Sample Questions Couple E 0 Couple E 0 Br 2 (l) + 2e 2Br (aq) +1.06 V AuCl 4 + 3e Au + 4Cl +1.00 V Ag + + e Ag +0.80 V Hg 2+ 2 + 2e 2 Hg +0.79 V Fe 3+ (aq) + e Fe 2+ (aq) +0.77 V Cu 2+
More informationBoyle s law - For calculating changes in pressure or volume: P 1 V 1 = P 2 V 2. Charles law - For calculating temperature or volume changes: V 1 T 1
Common Equations Used in Chemistry Equation for density: d= m v Converting F to C: C = ( F - 32) x 5 9 Converting C to F: F = C x 9 5 + 32 Converting C to K: K = ( C + 273.15) n x molar mass of element
More informationUseful charge on one mole of electrons: 9.64 x 10 4 coulombs/mol e - = F F is the Faraday constant
Electrochemistry II: Cell voltage and Gibbs Free energy Reading: Moore chapter 19, sections 15.6-15.12 Questions for Review and Thought: 36, 40, 42, 44, 50, 54, 60, 64, 70 Key Concepts and Skills: definition
More informationElectrochemistry - ANSWERS
Electrochemistry - ANSWERS 1. Using a table of standard electrode potentials, predict if the following reactions will occur spontaneously as written. a) Al 3+ + Ni Ni 2+ + Al Al 3+ + 3e - Al E = -1.68
More informationRosalinda Inguantaa*, Emanuele Scadutoa, Patrizia Livrerib, Salvatore Piazzaa, Carmelo Sunseria
Nanostructured materials for solar cells: electrochemical fabrication and characterization Rosalinda Inguantaa*, Emanuele Scadutoa, Patrizia Livrerib, Salvatore Piazzaa, Carmelo Sunseria r.inguanta@unipa.it
More informationSolid Oxide Fuel Cell Development at Topsoe Fuel Cell A/S
Solid Oxide Fuel Cell Development at Topsoe Fuel Cell A/S Briefly on Topsoe Fuel Cell Development, marketing and sales of SOFC technology Founded in 2004 Subsidiary of Haldor Topsøe A/S (wholly owned)
More information2 Absorbing Solar Energy
2 Absorbing Solar Energy 2.1 Air Mass and the Solar Spectrum Now that we have introduced the solar cell, it is time to introduce the source of the energy the sun. The sun has many properties that could
More informationChem 1721 Brief Notes: Chapter 19
Chem 1721 Brief Notes: Chapter 19 Chapter 19: Electrochemistry Consider the same redox reaction set up 2 different ways: Cu metal in a solution of AgNO 3 Cu Cu salt bridge electrically conducting wire
More informationASI OEM Outdoor Solar Modules
SOLAR PHOTOVOLTAICS ASI OEM OUTDOOR E ASI OEM Outdoor Solar Modules for innovative autarchic electronic devices More Energy Double-stacked cells Stable performance Reliability and Quality Made in Germany
More informationBalancing chemical reaction equations (stoichiometry)
Balancing chemical reaction equations (stoichiometry) This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit
More informationELG4126: Photovoltaic Materials. Based Partially on Renewable and Efficient Electric Power System, Gilbert M. Masters, Wiely
ELG4126: Photovoltaic Materials Based Partially on Renewable and Efficient Electric Power System, Gilbert M. Masters, Wiely Introduction A material or device that is capable of converting the energy contained
More informationChemical Bonds. Chemical Bonds. The Nature of Molecules. Energy and Metabolism < < Covalent bonds form when atoms share 2 or more valence electrons.
The Nature of Molecules Chapter 2 Energy and Metabolism Chapter 6 Chemical Bonds Molecules are groups of atoms held together in a stable association. Compounds are molecules containing more than one type
More informationName Electrochemical Cells Practice Exam Date:
Name Electrochemical Cells Practice Exam Date: 1. Which energy change occurs in an operating voltaic cell? 1) chemical to electrical 2) electrical to chemical 3) chemical to nuclear 4) nuclear to chemical
More informationThe potential of Solid Hydrogen for Renewable Energy Storage & valorization
Green and safe hydrogen solutions The potential of Solid Hydrogen for Renewable Energy Storage & valorization Pascal Mauberger - McPhy Energy President du Directoire Conférence ASPROM Paris 27 mars 2012
More informationIV.H.2 New York State Hi-Way Initiative*
IV.H.2 New York State Hi-Way Initiative* Richard Bourgeois, P.E. General Electric Global Research 1 Research Circle Niskayuna NY 12309 Phone: (518) 387-4550; E-mail: richard.bourgeois@crd.ge.com DOE Technology
More informationfuture flight Fuel Cell Activity BOX GRADES 5-12 Museum Aeronautics Research Mission Directorate in a Series
National Aeronautics and Space Administration GRADES 5-12 Fuel Cell Activity Aeronautics Research Mission Directorate Museum in a BOX Series www.nasa.gov MUSEUM IN A BOX (Photo courtesy of MJ/TR, GNU Free
More informationChem 1A Exam 2 Review Problems
Chem 1A Exam 2 Review Problems 1. At 0.967 atm, the height of mercury in a barometer is 0.735 m. If the mercury were replaced with water, what height of water (in meters) would be supported at this pressure?
More informationLecture 15 - application of solid state materials solar cells and photovoltaics. Copying Nature... Anoxygenic photosynthesis in purple bacteria
Lecture 15 - application of solid state materials solar cells and photovoltaics. Copying Nature... Anoxygenic photosynthesis in purple bacteria Simple example, but still complicated... Photosynthesis is
More informationPreliminary Concepts. Preliminary Concepts. Class 8.3 Oxidation/Reduction Reactions and Electrochemistry I. Friday, October 15 Chem 462 T.
Class 8.3 Oxidation/Reduction Reactions and Electrochemistry I Friday, October 15 Chem 462 T. Hughbanks Preliminary Concepts Electrochemistry: the electrical generation of, or electrical exploitation of
More informationVincenzo Esposito. Università di Roma Tor Vergata
Vincenzo Esposito Università di Roma Tor Vergata What is a fuel cell? It is an electrochemical device with a high energetic conversion yield. It convert indirectly the chemical energy of a fuel into electric
More informationSolar Photovoltaic (PV) Cells
Solar Photovoltaic (PV) Cells A supplement topic to: Mi ti l S Micro-optical Sensors - A MEMS for electric power generation Science of Silicon PV Cells Scientific base for solar PV electric power generation
More information5.111 Principles of Chemical Science
MIT OpenCourseWare http://ocw.mit.edu 5.111 Principles of Chemical Science Fall 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms. 26.1 5.111 Lecture
More informationFUNDAMENTAL PROPERTIES OF SOLAR CELLS
FUNDAMENTAL PROPERTIES OF SOLAR CELLS January 31, 2012 The University of Toledo, Department of Physics and Astronomy SSARE, PVIC Principles and Varieties of Solar Energy (PHYS 4400) and Fundamentals of
More informationMBA Lattice Upgrade: New Opportunities for In-situ High Energy (30 kev 90 kev) X-ray Structural Analyses
MBA Lattice Upgrade: New Opportunities for In-situ High Energy (30 kev 90 kev) X-ray Structural Analyses David Tiede Chemical Sciences and Engineering Division Argonne National Laboratory Workshop on New
More informationCELL POTENTIAL, E. Terms Used for Galvanic Cells. Uses of E o Values CELL POTENTIAL, E. Galvanic Cell. Organize halfreactions
Electrons move from anode to cathode in the wire. Anions & cations move thru the salt bridge. Terms Used for Galvanic Cells Galvanic Cell We can calculate the potential of a Galvanic cell using one of
More informationCHM1 Review Exam 12. Topics REDOX
CHM1 Review Exam 12 Topics REDOX REDOX Reactions Oxidation Reduction Oxidizing agent Reducing agent Galvanic (Voltaic) Cells Anode Cathode Salt bridge Electrolyte Half-reactions Voltage o Positive voltages
More informationDevelopment of large-scale H 2 storage and transportation technology with Liquid Organic Hydrogen Carrier (LOHC)
Development of large-scale storage and transportation technology with Liquid Organic Hydrogen Carrier (LOHC) Yoshimi Okada 1, Mitsunori Shimura 2 Principal researcher, Technology Development Unit, Chiyoda
More informationMaterials for Organic Electronic. Jeremy Burroughes FRS FREng
Materials for Organic Electronic Applications Jeremy Burroughes FRS FREng Introduction Organic Thin Film Transistors Organic Solar Cells and Photodiodes All Printed OLED Summary 4k2k 56 Displays Panasonic
More informationU N. Supercapattery: A Super Battery Approach. George Z. Chen
U N Supercapatteries & Power Electronics Supercapattery: A Super Battery Approach George Z. Chen Department of Chemical and Environmental Engineering, and Energy and Sustainability Research Division University
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Chemistry 1C-Dr. Larson Chapter 20 Review Questions MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) is reduced in the following reaction: Cr2O7
More information2. Write the chemical formula(s) of the product(s) and balance the following spontaneous reactions.
1. Using the Activity Series on the Useful Information pages of the exam write the chemical formula(s) of the product(s) and balance the following reactions. Identify all products phases as either (g)as,
More informationPOLYMER BASED PHOTOVOLTAICS
PLYMER BASED PHTVLTAICS Novel concepts, materials and state-of-the-art performances Jan Kroon Semiconducting polymers Nobel Prize Chemistry 2000 (Alan J. Heeger, Alan G. MacDiarmid, Hideki Shirakawa) Conducting
More informationNANO SILICON DOTS EMBEDDED SIO 2 /SIO 2 MULTILAYERS FOR PV HIGH EFFICIENCY APPLICATION
NANO SILICON DOTS EMBEDDED SIO 2 /SIO 2 MULTILAYERS FOR PV HIGH EFFICIENCY APPLICATION Olivier Palais, Damien Barakel, David Maestre, Fabrice Gourbilleau and Marcel Pasquinelli 1 Outline Photovoltaic today
More informationElectrochemistry Voltaic Cells
Electrochemistry Voltaic Cells Many chemical reactions can be classified as oxidation-reduction or redox reactions. In these reactions one species loses electrons or is oxidized while another species gains
More informationChapter 7: Chemical Energy
Chapter 7: Chemical Energy Goals of Period 7 Section 7.1: To describe atoms, chemical elements and compounds Section 7.2: To discuss the electromagnetic force and physical changes Section 7.3: To illustrate
More informationGalvanic cell and Nernst equation
Galvanic cell and Nernst equation Galvanic cell Some times called Voltaic cell Spontaneous reaction redox reaction is used to provide a voltage and an electron flow through some electrical circuit When
More informationCharacteristic curves of a solar cell
Related Topics Semi-conductor, p-n junction, energy-band diagram, Fermi characteristic energy level, diffusion potential, internal resistance, efficiency, photo-conductive effect, acceptors, donors, valence
More informationFrom Nano-Electronics and Photonics to Renewable Energy
From Nano-Electronics and Photonics to Renewable Energy Tom Smy Department of Electronics, Carleton University Questions are welcome! OUTLINE Introduction: to EE and Engineering Physics Renewable Energy
More information鋰 電 池 技 術 及 產 業 發 展 趨 勢
鋰 電 池 技 術 及 產 業 發 展 趨 勢 潘 金 平 E-mail: jppan@itri.org.tw Tel: 035-915148 工 業 技 術 研 究 院 材 料 與 化 工 研 究 所 2011/3/22 鋰 電 池 電 動 車 生 產 狀 況 EV Benefits: Cost saving (fuel and maintenance) Reduce/eliminate CO2
More informationSOLAR ENERGY USING FOR HYDROGEN PRODUCTION
Peet trool lleeuum & Cooaal ll IISSN 1337-7027 Available online at www.vurup.sk/pc Petroleum & Coal 49 (2), 40-47, 2007 SOLAR ENERGY USING FOR HYDROGEN PRODUCTION Michal Šingliar Slovnaft, member of MOL
More informationChapter Test B. Chapter: Measurements and Calculations
Assessment Chapter Test B Chapter: Measurements and Calculations PART I In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. 1.
More informationA bio-inspired tandem cell for solar fuel production
A bio-inspired tandem cell for solar fuel production Andrea Barbieri ISOF CNR Dec. 16th, 2014 Coffee Talk @ ISOF 1 ESF-EUROCORES EuroSolarFuel Background and Objectives The Molecular Science for a Conceptual
More informationMolecular Engineering for Solar Energy Conversion and Lighting Materials
193 Figure 5.1 Schematic representation of photochemical water splitting (artificial photosynthesis). Five fundamental components are needed: (1) an antenna for light harvesting, (2) a charge-separation
More informationExciton dissociation in solar cells:
Exciton dissociation in solar cells: Xiaoyang Zhu Department of Chemistry University of Minnesota, Minneapolis t (fs) 3h! E, k h! Pc Bi e - 1 Acknowledgement Organic semiconductors: Mutthias Muntwiler,
More informationIncluded are Popular Write-ups (in order) of: STEP Fertilizer STEP Fuels STEP Cement STEP Carbon STEP Iron STEP Hydrogen
Included are Popular Write-ups (in order) of: STEP Fertilizer STEP Fuels STEP Cement STEP Carbon STEP Iron STEP Hydrogen Further information available at Licht research group sites: http://home.gwu.edu/~slicht/index.html
More informationFuel Cells for Renewable Energy and for Transportation IFCBC Meeting 24.12.2006 Prof. E. Peled School of Chemistry Tel Aviv University, Israel
Fuel Cells for Renewable Energy and for Transportation IFCBC Meeting 24.12.2006 Prof. E. Peled School of Chemistry Tel Aviv University, Israel TAU PU for laptops 1 Outline The problem: dependence on oil
More informationElectrophoretic Gold Nanoparticles Depostion On Carbon Nanotubes For NO 2 Sensors
European Network on New Sensing Technologies for Air Pollution Control and Environmental Sustainability - EuNetAir COST Action TD1105 2 nd International Workshop EuNetAir on New Sensing Technologies for
More information1. f. Students know usable energy is captured from sunlight by chloroplasts and is stored through the synthesis of sugar from carbon dioxide.
1. The fundamental life processes of plants and animals depend on a variety of chemical reactions that occur in specialized areas of the organism s cells. As a basis for understanding this concept: 1.
More informationDetermining Equivalent Weight by Copper Electrolysis
Purpose The purpose of this experiment is to determine the equivalent mass of copper based on change in the mass of a copper electrode and the volume of hydrogen gas generated during an electrolysis reaction.
More informationName AP CHEM / / Collected Essays Chapter 17 Answers
Name AP CHEM / / Collected Essays Chapter 17 Answers 1980 - #2 M(s) + Cu 2+ (aq) M 2+ (aq) + Cu(s) For the reaction above, E = 0.740 volt at 25 C. (a) Determine the standard electrode potential for the
More informationLight management for photovoltaics using surface nanostructures
Light management for photovoltaics using surface nanostructures Roberta De Angelis Department of Industrial Engineering and INSTM, University of Rome Tor Vergata New Materials For Optoelectronics webnemo.uniroma2.it
More informationChemistry 122 Mines, Spring 2014
Chemistry 122 Mines, Spring 2014 Answer Key, Problem Set 9 1. 18.44(c) (Also indicate the sign on each electrode, and show the flow of ions in the salt bridge.); 2. 18.46 (do this for all cells in 18.44
More informationCHAPTER 21 ELECTROCHEMISTRY
Chapter 21: Electrochemistry Page 1 CHAPTER 21 ELECTROCHEMISTRY 21-1. Consider an electrochemical cell formed from a Cu(s) electrode submerged in an aqueous Cu(NO 3 ) 2 solution and a Cd(s) electrode submerged
More informationFuel Cells and Their Applications
Karl Kordesch, Giinter Simader Fuel Cells and Their Applications VCH Weinheim New York Basel Cambridge Tokyo Contents 1. Introduction 1 1.1. Fuel Cell Technology: a Dream, Challenge or a Necessity? 1 1.2.
More informationLight as a Wave. The Nature of Light. EM Radiation Spectrum. EM Radiation Spectrum. Electromagnetic Radiation
The Nature of Light Light and other forms of radiation carry information to us from distance astronomical objects Visible light is a subset of a huge spectrum of electromagnetic radiation Maxwell pioneered
More informationFundamentals of Photovoltaic solar technology For Battery Powered applications
Fundamentals of Photovoltaic solar technology For Battery Powered applications Solar is a natural energy source for many battery powered applications. With energy harvested from the sun, the size of batteries
More informationRedox and Electrochemistry
Name: Thursday, May 08, 2008 Redox and Electrochemistry 1. A diagram of a chemical cell and an equation are shown below. When the switch is closed, electrons will flow from 1. the Pb(s) to the Cu(s) 2+
More informationo Electrons are written in half reactions but not in net ionic equations. Why? Well, let s see.
REDOX REACTION EQUATIONS AND APPLICATIONS Overview of Redox Reactions: o Change in Oxidation State: Loses Electrons = Oxidized (Oxidation number increases) Gains Electrons = Reduced (Oxidation Number Reduced)
More informationSUPPLEMENTARY TOPIC 3 ENERGY AND CHEMICAL REACTIONS
SUPPLEMENTARY TOPIC 3 ENERGY AND CHEMICAL REACTIONS Rearranging atoms. In a chemical reaction, bonds between atoms in one or more molecules (reactants) break and new bonds are formed with other atoms to
More informationstoichiometry = the numerical relationships between chemical amounts in a reaction.
1 REACTIONS AND YIELD ANSWERS stoichiometry = the numerical relationships between chemical amounts in a reaction. 2C 8 H 18 (l) + 25O 2 16CO 2 (g) + 18H 2 O(g) From the equation, 16 moles of CO 2 (a greenhouse
More informationSolar Cell Parameters and Equivalent Circuit
9 Solar Cell Parameters and Equivalent Circuit 9.1 External solar cell parameters The main parameters that are used to characterise the performance of solar cells are the peak power P max, the short-circuit
More informationInterface Design to improve stability of polymer solar cells for potential space applications
COMMUNICATION Interface Design to improve stability of polymer solar cells for potential space applications Ankit Kumar, Nadav Rosen, Roderick Devine *, Yang Yang * Supplementary Information This supplementary
More informationEfficiency and Open Circuit Voltage
2 Efficiency and Open Circuit Voltage In this chapter we consider the efficiency of fuel cells how it is defined and calculated, and what the limits are. The energy considerations give us information about
More informationTraining Systems for Renewable Energies. Acquiring Practical Skills and Project-oriented Expertise
Training Systems for Renewable Energies Acquiring Practical Skills and Project-oriented Expertise Qualifications through Quality Inexhaustible, sustainable, real the future is green The move away from
More informationAutomotive Lithium-ion Batteries
Automotive Lithium-ion Batteries 330 Automotive Lithium-ion Batteries Akihiko Maruyama Ryuji Kono Yutaka Sato Takenori Ishizu Mitsuru Koseki Yasushi Muranaka, Dr. Eng. OVERVIEW: A new of high-power lithium-ion
More informationPotassium ion charge would be +1, so oxidation number is +1. Chloride ion charge would be 1, so each chlorine has an ox # of -1
Chapter 18-1 1. Assign oxidation numbers to each atom in: Ni Nickel ion charge would be +2, so oxidation number is +2 Chloride ion charge would be 1, so each chlorine has an ox # of -1 Mg 2 Ti 4 Magnesium
More informationCelle solari di terza generazione (a fotosintesi )
Celle solari di terza generazione (a fotosintesi ) Esempi: photoelectrochemical cells, polymer solar cells (quarta generazione), nanocrystal solar cells (a quantum dots), Dye-sensitized solar cells Celle
More informationHigh Efficiency Black Polymer Solar Cells November 2012 Annual Report
High Efficiency Black Polymer Solar Cells November 2012 Annual Report PI: Dr. Franky So External Collaborators: John Reynolds, Georgia Tech Industry Partner: Sestar Technologies, LLC Students: Cephas Small
More informationWork and Energy. Work = Force Distance. Work increases the energy of an object. Energy can be converted back to work.
Work and Energy Ch. 6 Work = Force Distance Work increases the energy of an object. Energy can be converted back to work. Therefore, energy and work have the same unit: Newton meter = Nm Energy per gram,
More informationIntegrating the Solar Spectrum
Integrating the Solar Spectrum PHYS 4400, Principles and Varieties of Solar Energy Instructor: Randy J. Ellingson The University of Toledo January 24, 203 Pop Quiz Note: quiz does not count toward grade
More information* Is chemical energy potential or kinetic energy? The position of what is storing energy?
Biology 1406 Exam 2 - Metabolism Chs. 5, 6 and 7 energy - capacity to do work 5.10 kinetic energy - energy of motion : light, electrical, thermal, mechanical potential energy - energy of position or stored
More informationStorage technologies/research, from physics and chemistry to engineering
Storage technologies/research, from physics and chemistry to engineering Professor Nigel Brandon OBE FREng Director, Sustainable Gas Institute Director Energy Storage Research Network Co-Director, ENERGY
More informationHigh Resolution Spatial Electroluminescence Imaging of Photovoltaic Modules
High Resolution Spatial Electroluminescence Imaging of Photovoltaic Modules Abstract J.L. Crozier, E.E. van Dyk, F.J. Vorster Nelson Mandela Metropolitan University Electroluminescence (EL) is a useful
More informationAnwendungen mit der Fronius Energiezelle
Anwendungen mit der Fronius Energiezelle Grüner Wasserstoff Zukunft der Energieversorgung? Österreichische Akademie der Wissenschaften, Wien, 22. Jänner 2013 Dr. Ewald Wahlmüller Fronius International
More informationIndiana's Academic Standards 2010 ICP Indiana's Academic Standards 2016 ICP. map) that describe the relationship acceleration, velocity and distance.
.1.1 Measure the motion of objects to understand.1.1 Develop graphical, the relationships among distance, velocity and mathematical, and pictorial acceleration. Develop deeper understanding through representations
More informationSIMULATION OF THE MARS SURFACE SOLAR SPECTRA FOR OPTIMIZED PERFORMANCE OF TRIPLE- JUNCTION SOLAR CELLS
SIMULATION OF THE MARS SURFACE SOLAR SPECTRA FOR OPTIMIZED PERFORMANCE OF TRIPLE- JUNCTION SOLAR CELLS Kenneth M. Edmondson, David E. Joslin, Chris M. Fetzer, Richard R. King, Nasser H. Karam Spectrolab,
More informationChapter 5. Second Edition ( 2001 McGraw-Hill) 5.6 Doped GaAs. Solution
Chapter 5 5.6 Doped GaAs Consider the GaAs crystal at 300 K. a. Calculate the intrinsic conductivity and resistivity. Second Edition ( 2001 McGraw-Hill) b. In a sample containing only 10 15 cm -3 ionized
More information