Proton enhanced dynamic battery chemistry for aprotic lithium-oxygen batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Yun Guang Zhu
  • Yangchun Rong
  • Haomin Chen
  • Jing Yang
  • Chuankun Jia
  • Li-Juan Yu
  • Amir Karton
  • Yang Ren
  • Xiaoxiong Xu
  • Stefan Adams
  • Qing Wang

Detail(s)

Original languageEnglish
Article number14308
Journal / PublicationNature Communications
Volume8
Online published6 Feb 2017
Publication statusPublished - 6 Feb 2017
Externally publishedYes

Link(s)

Abstract

Water contamination is generally considered to be detrimental to the performance of aprotic lithium-air batteries, whereas this view is challenged by recent contrasting observations. This has provoked a range of discussions on the role of water and its impact on batteries. In this work, a distinct battery chemistry that prevails in water-contaminated aprotic lithium-oxygen batteries is revealed. Both lithium ions and protons are found to be involved in the oxygen reduction and evolution reactions, and lithium hydroperoxide and lithium hydroxide are identified as predominant discharge products. The crystallographic and spectroscopic characteristics of lithium hydroperoxide monohydrate are scrutinized both experimentally and theoretically. Intriguingly, the reaction of lithium hydroperoxide with triiodide exhibits a faster kinetics, which enables a considerably lower overpotential during the charging process. The battery chemistry unveiled in this mechanistic study could provide important insights into the understanding of nominally aprotic lithium-oxygen batteries and help to tackle the critical issues confronted.

Research Area(s)

Citation Format(s)

Proton enhanced dynamic battery chemistry for aprotic lithium-oxygen batteries. / Zhu, Yun Guang; Liu, Qi; Rong, Yangchun; Chen, Haomin; Yang, Jing; Jia, Chuankun; Yu, Li-Juan; Karton, Amir; Ren, Yang; Xu, Xiaoxiong; Adams, Stefan; Wang, Qing.

In: Nature Communications, Vol. 8, 14308, 06.02.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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