PHOTOELECTROCHEMICAL HYDROGEN PRODUCTION USING TiO2 and Fe2O3 PHOTOANODES

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902941" target="_blank" >RIV/60461373:22310/16:43902941 - isvavai.cz</a>

Result on the web

<a href="http://www.icct.cz/getattachment/PREDCHOZI-KONFERENCE/2016/Proceedings_ICCT2016.pdf.aspx" target="_blank" >http://www.icct.cz/getattachment/PREDCHOZI-KONFERENCE/2016/Proceedings_ICCT2016.pdf.aspx</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

PHOTOELECTROCHEMICAL HYDROGEN PRODUCTION USING TiO2 and Fe2O3 PHOTOANODES

Original language description

Titania (TiO2) and iron oxide (?-Fe2O3) hematite thin films have the potential applications as photoanodes for hydrogen production via photoelectrochemical water splitting. Great advantages of TiO2 are its low price, high stability and nontoxicity. However, for practical applications, there is a huge disadvantage consisting in utilization of very small part of sunlight (4%). Iron oxide (?-Fe2O3) has favourable band gap (2.0-2.2 eV), which allows absorbing a substantial fraction of solar spectrum, resulting in the theoretical maximal solar-to-hydrogen (STH) conversion efficiency 15% . But there are also limitations, e. g. the nonideal position of hematite's conduction band, which is too low for spontaneous water reduction. The aim of the present work was the comparison of TiO2 and ?-Fe2O3 photoanodes and the efficiency evaluation for hydrogen evolution via water splitting. Efficiency of photoelectrochemical water splitting depends on the electrochemical arrangement. For real device operated in 2-electrode arrangement (controlled potential difference between two electrodes = cell voltage), it is possible to determine real device performance as open circuit voltage, short circuit current, current as a function of cell voltage and solar to hydrogen (STH) efficiency. Because both electrodes affect performance (photocurrent vs. cell voltage) 2-electrode cell arrangement does not give information about the performance of individual electrodes. For this purpose we used 3-electrode arrangement and control either the potential of working electrode (photoanode) with respect to reference electrode or the cell voltage.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

CG - Electrochemistry

OECD FORD branch

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Project

<a href="/en/project/GA15-19705S" target="_blank" >GA15-19705S: Advanced self-organized nanoarchitectures grown from magnetron co-sputtered metal alloys for photonic applications</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

PROCEEDINGS of the 4th International Conference on Chemical Technology

ISBN

978-80-86238-97-5

ISSN

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e-ISSN

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Number of pages

5

Pages from-to

171-175

Publisher name

Ocean Design

Place of publication

Praha

Event location

Mikulov, ČR

Event date

Apr 24, 2016

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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