Introducing titanium hydride on porous transport layer for more energy efficient water electrolysis with proton exchange membrane

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43926877" target="_blank" >RIV/60461373:22310/23:43926877 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22810/23:43926877

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0378775323002884#gs2" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378775323002884#gs2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpowsour.2023.232913" target="_blank" >10.1016/j.jpowsour.2023.232913</a>

Result language

angličtina

Original language name

Introducing titanium hydride on porous transport layer for more energy efficient water electrolysis with proton exchange membrane

Original language description

An extensive oxidation of the Ti occurs during proton exchange membrane (PEM) water electrolysis, leading to an increase in the ohmic resistance of the electrolyzer cell (RΩ) and lowered energy efficiency. This issue is often addressed by coating the anode components with platinum group metals. Our previous results showed that acid etching of the porous transport layer (PTL) leading to Ti depassivation and formation of a surface hydride, is an effective way to decrease the RΩ. Here, we aim to minimise the RΩ by a novel surface treatment of the PTL by combining Ti hydride formation with subsequent Ir coating. The PTL treatment consists of three steps: acid etching, electrochemical hydridation and final coating with Ir. Electrolysers with the modified PTLs were operated for three weeks. Electrochemical impedance spectroscopy was used to evaluate the time evolution of the RΩ. In comparison with pristine Ti PTL coated with Ir, the PTL with the full treatment achieved an additional 12% reduction in RΩ, resulting in a 15% increase in current density at 2 V. Therefore, the developed PTL treatment minimises the ohmic losses in PEM water electrolyser caused by PTL oxidation and leads to more energy efficient hydrogen production. © 2023 Elsevier B.V.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/GC20-06422J" target="_blank" >GC20-06422J: Advanced nanostructured membrane-electrode assembly with the improved mass and charge transport for PEM water electrolysis</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of Power Sources

ISSN

0378-7753

e-ISSN

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Volume of the periodical

565

Issue of the periodical within the volume

1 May 2023

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85150840147