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Why Do Lithium-Oxygen Batteries Fail: Parasitic Chemical Reactions and Their Synergistic Effect

Yao, Xiahui ; Dong, Qi ; Cheng, Qingmei ; Wang, Dunwei

Angewandte Chemie (International ed.), 2016-09, Vol.55 (38), p.11344-11353 [Periódico revisado por pares]

Germany: Blackwell Publishing Ltd

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  • Título:
    Why Do Lithium-Oxygen Batteries Fail: Parasitic Chemical Reactions and Their Synergistic Effect
  • Autor: Yao, Xiahui ; Dong, Qi ; Cheng, Qingmei ; Wang, Dunwei
  • Assuntos: Anodes ; Charge efficiency ; Chemical reactions ; Discharge ; Electrochemistry ; Electrolytic cells ; Energy storage ; Lithium ; Lithium batteries ; lithium-oxygen batteries ; Minireview ; Minireviews ; Oxygen ; Reactive oxygen species ; Reviews ; Storage batteries ; Synergistic effect ; Technology
  • É parte de: Angewandte Chemie (International ed.), 2016-09, Vol.55 (38), p.11344-11353
  • Notas: istex:51D8098681CB1D0E07F55CFC962B0C4DBB05411B
    MassCEC
    ArticleID:ANIE201601783
    ark:/67375/WNG-498HVR1N-T
    These authors contribute equally.
    ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-3
    content type line 23
    ObjectType-Review-1
  • Descrição: As an electrochemical energy‐storage technology with the highest theoretical capacity, lithium–oxygen batteries face critical challenges in terms of poor stabilities and low charge/discharge round‐trip efficiencies. It is generally recognized that these issues are connected to the parasitic chemical reactions at the anode, electrolyte, and cathode. While the detailed mechanisms of these reactions have been studied separately, the possible synergistic effects between these reactions remain poorly understood. To fill in the knowledge gap, this Minireview examines literature reports on the parasitic chemical reactions and finds the reactive oxygen species a key chemical mediator that participates in or facilitates nearly all parasitic chemical reactions. Given the ubiquitous presence of oxygen in all test cells, this finding is important. It offers new insights into how to stabilize various components of lithium–oxygen batteries for high‐performance operations and how to eventually materialize the full potentials of this promising technology. Synergistic effect: In lithium–oxygen batteries reactive oxygen species are found to be a key chemical mediator that participates in or facilitates nearly all parasitic chemical reactions at the anode, cathode, and electrolyte. Understanding of their synergistic effect will enable more rational designs for future lithium–oxygen batteries.
  • Editor: Germany: Blackwell Publishing Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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