Performance of a PEM water electrolyser using a TaC-supported iridium oxide electrocatalyst

Kód výsledku v IS VaVaI

RIV/60461373:22310/14:43897732 - isvavai.cz

Výsledek na webu

http://www.sciencedirect.com/science/article/pii/S0360319913030206

DOI - Digital Object Identifier

10.1016/j.ijhydene.2013.12.085

Jazyk výsledku

angličtina

Název v původním jazyce

Performance of a PEM water electrolyser using a TaC-supported iridium oxide electrocatalyst

Popis výsledku v původním jazyce

Polymer electrolyte membrane (PEM) water el ectrolysis is an attra ctive way of producing carbon-free hydrogen. One of the drawbac ks of this method is the need for precious metalbased electrocatalysts. This calls for a highly efficient utilization of the precious metal, which can be obtained by dispersi ng the precious meta l compound onto a catalyst support. Electrocatalysts with 50, 70 and 90 wt.% of IrO2 on a TaC support were tested in a laboratory PEM water electrolyser and compared with pure IrO2.The temperature was set at 90, 110, 120 and 130 C respectively and the cell voltage was varied between 1.4 and 1.8 V. The load characteristics and electrochemical impedance spectra were obtained and compared for a range of electrocatalysts. The highestcurrent densities and the lowest charge transfer and cell resistances were found for the 70 wt.% IrO2 electrocatalyst. By contrast, the pure IrO2 electrocatalyst showed the lowest current densities and the highest charge transfer and cell

Název v anglickém jazyce

Performance of a PEM water electrolyser using a TaC-supported iridium oxide electrocatalyst

Popis výsledku anglicky

Polymer electrolyte membrane (PEM) water el ectrolysis is an attra ctive way of producing carbon-free hydrogen. One of the drawbac ks of this method is the need for precious metalbased electrocatalysts. This calls for a highly efficient utilization of the precious metal, which can be obtained by dispersi ng the precious meta l compound onto a catalyst support. Electrocatalysts with 50, 70 and 90 wt.% of IrO2 on a TaC support were tested in a laboratory PEM water electrolyser and compared with pure IrO2.The temperature was set at 90, 110, 120 and 130 C respectively and the cell voltage was varied between 1.4 and 1.8 V. The load characteristics and electrochemical impedance spectra were obtained and compared for a range of electrocatalysts. The highestcurrent densities and the lowest charge transfer and cell resistances were found for the 70 wt.% IrO2 electrocatalyst. By contrast, the pure IrO2 electrocatalyst showed the lowest current densities and the highest charge transfer and cell

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

FR-TI2/442: Výzkum a vývoj pokročilých vodíkových technologií pro energetiku a dopravu

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

International Journal of Hydrogen Energy

ISSN

0360-3199

e-ISSN

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Svazek periodika

39

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

"3072?3078"

Kód UT WoS článku

000331917400004

EID výsledku v databázi Scopus

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