4.8 Article

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

期刊

ADVANCED SCIENCE
卷 9, 期 12, 页码 -

出版社

WILEY
DOI: 10.1002/advs.202104907

关键词

aqueous batteries; aqueous electrolyte; batteries; cathodes; oxygen evolution; oxygen redox

资金

  1. Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [20H05673]
  2. JST, CREST, Japan [JPMJCR21O6]
  3. JPSP KAKENHI [19H05816, 18K19124, 18H03924]
  4. Asahi Glass Foundation
  5. Grants-in-Aid for Scientific Research [18H03924, 18K19124, 20H05673] Funding Source: KAKEN

向作者/读者索取更多资源

Aqueous lithium-ion batteries are sustainable, low-cost, safe, and environmentally friendly. The use of high-salt-concentration strategy expands their electrochemical potential window, providing opportunities to explore high-performance electrode materials.
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.

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