Reaction mechanisms of the oxygen reduction and evolution reactions in aprotic solvents for Li–O 2 batteries

Can Liu, Kazuki Sato, Xiang Bin Han, Shen Ye

研究成果: Review article査読

5 被引用数 (Scopus)

抄録

The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in aprotic solvents are elementary reactions for the discharging and charging processes on the cathode of the lithium-oxygen batteries, respectively. Understanding the mechanisms of these reactions at a molecular level has now become a bottleneck that hinders the development of the battery. This short article briefly reviews recent progresses in the studies of the ORR/OER mechanism in aprotic solvents. Two reaction mechanisms, the electrochemical pathway and chemical (disproportionation) pathway, will be discussed with their contribution to the ORR process on the cathode surface. Furthermore, the origin of the OER overpotential will also be discussed. The solutions to reduce the OER overpotential are noted with development of redox mediators.

本文言語English
ページ(範囲)151-156
ページ数6
ジャーナルCurrent Opinion in Electrochemistry
14
DOI
出版ステータスPublished - 2019 4

ASJC Scopus subject areas

  • 分析化学
  • 電気化学

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