A star-shaped polyimide covalent organic framework for high-voltage lithium-ion batteries

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

1 Scopus Citations
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Author(s)

  • Rui Hao
  • Jingjing Chen
  • Kun Liu
  • Guiyu Liu
  • Zhiqiang Wang
  • Qingmeng Gan
  • Hao Guo
  • Muqing Li
  • Zhouguang Lu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)2545–2550
Journal / PublicationMaterials Chemistry Frontiers
Volume6
Issue number17
Online published15 Jul 2022
Publication statusPublished - 7 Sep 2022

Abstract

Covalent organic frameworks are promising electrode materials for energy storage due to their uniform active sites, abundant pores, and high stability. However, the reported COF electrodes often display low discharge voltage, which limits their further applications. In this work, N,N,N,N-tetraphenylphenylenediamine (TPPDA) units were used to construct a novel polyimide COF, which exhibited a unique star-shaped structure. The COF material was used as positive electrode for lithium-ion batteries and displayed a high discharge voltage up to 3.6 V, higher than almost all the COF electrode materials. The TPPDA units were demonstrated as the redox active sites and exhibited a two-electron redox processes, which were featured by the redox of TPPDA radical cations and the insertion/extraction of PF6- anions. This work offers a new strategy to design novel COF materials and develop high-voltage organic electrodes for energy storage.

Citation Format(s)

A star-shaped polyimide covalent organic framework for high-voltage lithium-ion batteries. / Gu, Shuai; Hao, Rui; Chen, Jingjing; Chen, Xi; Liu, Kun; Hussain, Iftikhar; Liu, Guiyu; Wang, Zhiqiang; Gan, Qingmeng; Guo, Hao; Li, Muqing; Zhang, Kaili; Lu, Zhouguang.

In: Materials Chemistry Frontiers, Vol. 6, No. 17, 07.09.2022, p. 2545–2550.

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