Phenazine anodes for ultralongcycle-life aqueous rechargeable batteries

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

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Author(s)

  • Leilei Li
  • Long Chen
  • Yuehua Wen
  • Hong Xu
  • Wenfeng Zhang
  • Gaoping Cao
  • Yusheng Yang
  • Liqiang Mai
  • Hao Zhang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)26013-26022
Journal / PublicationJournal of Materials Chemistry A
Volume8
Issue number48
Online published14 Nov 2020
Publication statusPublished - 28 Dec 2020

Abstract

A nano-phenazine@Ketjen black (nPZ/KB) composite was prepared as an anode for aqueous rechargeable batteries by an in situ dissolution-precipitation method. Due to the uniform precipitation of nano-phenazine on the highly conductive and hierarchical porous Ketjen black surface, it enabled ultrafast transfer of metal cations (Na+, K+, Zn2+ etc.) and electrons to almost all the electrochemically active sites of phenazine molecules. Hence, nPZ/KB not only realized the full utilization of a theoretical capacity of 298 mA h g-1 but also exhibited a high rate discharge capacity of 102 mA h g-1 under 100 C in 6 M KOH. Furthermore, the nPZ/KB composite achieved an ultralong cycle life of 100 000 times with a high capacity retention of 76% because of the insolubilities of both phenazine and its reduction products in aqueous electrolytes. The excellent performance of the nPZ/KB-NiOOH battery and nPZ/KB-activated carbon pseudocapacitor demonstrated great promise for grid-scale energy storage devices. 

Citation Format(s)

Phenazine anodes for ultralongcycle-life aqueous rechargeable batteries. / Li, Leilei; Chen, Long; Wen, Yuehua; Xiong, Tengfei; Xu, Hong; Zhang, Wenfeng; Cao, Gaoping; Yang, Yusheng; Mai, Liqiang; Zhang, Hao.

In: Journal of Materials Chemistry A, Vol. 8, No. 48, 28.12.2020, p. 26013-26022.

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