| アイテムタイプ |
itemtype_ver1(1) |
| 公開日 |
2024-05-23 |
| タイトル |
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|
タイトル |
Durable high-entropy non-noble metal anodes for neutral seawater electrolysis |
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言語 |
en |
| 著者 |
Shiokawa, Fumiya
Asilah, Haji Tajuddin Aimi
Ohto, Tatsuhiko
Yu, Yue
Fujita, Takeshi
Tanimoto, Hisanori
Xi, Zeyu
Jeong, Samuel
Ito, Yoshikazu
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
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|
権利情報 |
© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
言語 |
en |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
Enhancing hydrogen production is key to achieving a carbon–neutral world. Among the various technologies available, using renewable energy for water electrolysis stands out as a leading method for creating green hydrogen. However, standard water electrolysis requires substantial quantities of ultra-clean fresh water for optimal energy efficiency and operations. This poses a problem as fresh water only represents a minuscule 0.01 % of our planet’s water reserves. Seawater electrolysis is a potential solution to resolve this limitation and attain sustainable hydrogen production. Nevertheless, electrolysis of seawater in its neutral state demands stringent reaction conditions, making it imperative to thoughtfully design the electrodes, particularly the anodes. This study presents the development of highly durable, noble-metal-free, high-entropy alloy anodes suitable for neutral seawater under highly fluctuating power operation. The anode demonstrates impressive stability (up to 6,000 cycles), lasting over 100 h at 100 mA cm−2 in a 0.5 M aqueous NaCl electrolyte. Its Faradaic efficiency for O2 production is 42 %. Density functional theory calculations reveal that the oxidized surface (passivation layer) of the anode prevents Cl− adsorption, helping to protect the catalytically active sites and prevent catalyst degradation. This finding suggests that noble-metal-free anodes can serve as practical alternatives to those made from noble metals for neutral seawater electrolysis. Moreover, the utilization of seawater without acid or alkali treatment paves the way for safer and more sustainable hydrogen production. This is a significant stride toward realizing our goal of carbon neutrality. |
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言語 |
en |
| 出版者 |
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出版者 |
Elsevier |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1016/j.cej.2023.147862 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
13858947 |
| 書誌情報 |
en : Chemical Engineering Journal
巻 479,
p. 147862,
発行日 2024-01-01
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| ファイル公開日 |
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|
日付 |
2026-01-01 |
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日付タイプ |
Available |
manscript-rev1.pdf (697 KB)
