2,3-diaminophenazine as a high-rate rechargeable aqueous zinc-ion batteries cathode

Jiandong Liang; Mengyao Tang; Liwei Cheng; Qiaonan Zhu; Runa Ji; Xiao Liu; Qi Zhang; Hua Wang; Zhitian Liu

doi:10.1016/j.jcis.2021.09.072

2,3-diaminophenazine as a high-rate rechargeable aqueous zinc-ion batteries cathode

J Colloid Interface Sci. 2022 Feb;607(Pt 2):1262-1268. doi: 10.1016/j.jcis.2021.09.072. Epub 2021 Sep 16.

Authors

Jiandong Liang¹, Mengyao Tang², Liwei Cheng², Qiaonan Zhu², Runa Ji², Xiao Liu¹, Qi Zhang¹, Hua Wang³, Zhitian Liu⁴

Affiliations

¹ Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China.
² School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China.
³ School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China. Electronic address: wanghua8651@buaa.edu.cn.
⁴ Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China. Electronic address: able.ztliu@wit.edu.cn.

PMID: 34571310
DOI: 10.1016/j.jcis.2021.09.072

Abstract

Organic materials are attracting extensive attention as promising cathodes for rechargeable aqueous zinc-ion batteries (ZIBs). However, most of them fail to implement the requirement of batteries with combined high-rate and long-cycle performance. Herein, we report a flexible organic molecule 2,3-diaminophenazine (DAP) which exhibits ultrahigh rate performance up to 500C and high capacity retention of 80% after 10,000 cycles at 100C (25.5 A g^-1). Moreover, the Zn²⁺ storage mechanism in the DAP electrode is revealed by ex-situ characterization technologies and theoretical calculation, and the redox active centers CN participate in the reversible electrochemical reaction process. Furthermore, electrochemical analyses show that surface-controlled electrochemical behavior contributes to the high-rate performance of DAP cathodes. Besides, its excellent long-cycle performance can be ascribed to the suppressed DAP dissolubility by using a modified glass fiber separator with carbon nanotubes (CNT) film. Our work provides useful insight into the design of high-rate and long-life ZIBs.

Keywords: Aqueous zinc-ion battery; Electrochemistry; Energy storage; High rate and long cycle; Organic cathode.