Oxygen Redox Versus Oxygen Evolution in Aqueous Electrolytes: Critical Influence of Transition Metals

Hirohito Umeno, Kosuke Kawai, Daisuke Asakura, Masashi Okubo, Atsuo Yamada*

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Aqueous lithium-ion batteries are promising electrochemical energy storage devices owing to their sustainable nature, low cost, high level of safety, and environmental benignity. The recent development of a high-salt-concentration strategy for aqueous electrolytes, which significantly expands their electrochemical potential window, has created attractive opportunities to explore high-performance electrode materials for aqueous lithium-ion batteries. This study evaluates the compatibility of large-capacity oxygen-redox cathodes with hydrate-melt electrolytes. Using conventional oxygen-redox cathode materials (Li2RuO3, Li1.2Ni0.13Co0.13Mn0.54O2, and Li1.2Ni0.2Mn0.6O2), it is determined that avoiding the use of transition metals with high catalytic activity for the oxygen evolution reaction is the key to ensuring the stable progress of the oxygen redox reaction in concentrated aqueous electrolytes.

本文言語English
論文番号2104907
ジャーナルAdvanced Science
9
12
DOI
出版ステータスPublished - 2022 4月 25
外部発表はい

ASJC Scopus subject areas

  • 医学(その他)
  • 化学工学(全般)
  • 材料科学(全般)
  • 生化学、遺伝学、分子生物学(その他)
  • 工学(全般)
  • 物理学および天文学(全般)

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