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Summary & Details

Durable High-Entropy Non-Noble Metal Anodes for Neutral Seawater Electrolysis

海水から水素を製造する高耐久性卑金属合金電極の開発

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Format: PDF

Price: Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880

Publication code: 20244550

Paper/Info type: Journal of Society of Automotive Engineers of Japan

Vol.78 No.9

Pages: 100-105(Total 6 p)

Date of publication: Sep 2024

Publisher: JSAE

Language: Japanese

Detailed Information

Category(J)	ホットトピックス Translation
Category(E)	Hot Topics
Author(J)	1) 伊藤良一
Author(E)	1) Yoshikazu Ito
Affiliation(J)	1) 筑波大学
Abstract(J)	本研究は、9つの卑金属元素から構成された合金電極を開発し、海水電解を行った。その結果、太陽光発電利用時に10年間以上アノード電解性能を維持できることが示唆された。本アノードは、電解に酸化イリジウムよりも高電圧が必要だが、「淡水が必要」という地理的制約を取り払い、海に面している地域での水素製造促進に貢献すると期待される。 Translation
Abstract(E)	Enhancing hydrogen production by water electrolysis is key to achieving a carbon-neutral world. However, water electrolysis requires substantial quantities of ultra-clean fresh water. Seawater electrolysis is a potential solution to resolve this limitation and attain sustainable hydrogen production. This study presents the development of highly durable, noble-metal-free, highentropy alloy anodes suitable for neutral seawater under highly fluctuating power operation. The anode demonstrates impressive stability（upto 6,000 cycles）, lasting over 100 hours at 100 mA cm－ 2 in sea water. This finding suggests that noble-metal-free anodes can serve as practical alternatives to those made from noble metals for neutral seawater electrolysis.

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