Solution-processed perylene diimide-ethylene diamine cathodes for aqueous zinc ion batteries

Biao Jiang; Tao Huang; Peng Yang; Xin Xi; Yuezeng Su; Ruili Liu; Dongqing Wu

doi:10.1016/j.jcis.2021.04.018

Solution-processed perylene diimide-ethylene diamine cathodes for aqueous zinc ion batteries

J Colloid Interface Sci. 2021 Sep 15:598:36-44. doi: 10.1016/j.jcis.2021.04.018. Epub 2021 Apr 9.

Authors

Biao Jiang¹, Tao Huang¹, Peng Yang¹, Xin Xi², Yuezeng Su², Ruili Liu², Dongqing Wu³

Affiliations

¹ School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD, Shanghai 200240, PR China.
² School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD, Shanghai 200240, PR China.
³ School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD, Shanghai 200240, PR China. Electronic address: wudongqing@sjtu.edu.cn.

PMID: 33892442
DOI: 10.1016/j.jcis.2021.04.018

Abstract

Organic electroactive compounds can be applied as alternative cathodes in rechargeable zinc ion batteries (ZIBs) instead of using inorganic cathode materials with low stability or high toxicity. However, many reported organic ZIB cathodes have some limitations, which are their tedious synthesis processes and low yields. In this work, perylene diimide-ethylenediamine/carbon black (PDI-EDA/CB) composites are prepared with a high yield of over 88% under mild conditions via a solution-based processing method. As the organic cathodes in aqueous ZIBs, the PDI-EDA/CB composites have a high specific capacity of 118.0 mA h g^-1 at 0.05 A g^-1; this capacity can be maintained as 95.0 mA h g^-1 even at a high current density of 5.00 A g^-1. Also, PDI-EDA/CB has good cycling stability by reserving 70.5% of its initial capacity after 1500 charge-discharge cycles at 1.00 A g^-1, outperforming many recently reported ZIB cathodes. As disclosed by the structural and electrochemical characterization of PDI-EDA/CB, its excellent electrochemical performance is due to the zinc ion storage mechanism of PDI-EDA and the solution-based fabrication method.

Keywords: Aqueous electrolyte; Organic cathode; Perylene diimide-ethylene diamine; Solution-processing; Zinc ion battery.