An organic cathode with tailored working potential for aqueous Zn-ion batteries.

Chem Commun (Camb)

Jiangsu Laboratory of Advanced Functional Material, Changshu Institute of Technology, School of Materials Engineering, Changshu 215500, China.

Published: October 2020

Up to 0.61 V increase of the working potential was achieved by modifying the anthraquinone (AQ) molecular structure with a stronger electron-withdrawing cyano group. Owing to the promoted discharge potential, an attractive energy density of 151.9 W h kg was realized for the Zn//TCNAQ full cell. The TCNAQ also displayed a good capacity retention of 81% after 1000 cycles at 500 mA g and a high mass loading practicability. Our research provided insight into the design of organic cathode materials with a tailored working potential for aqueous Zn-ion batteries.

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http://dx.doi.org/10.1039/d0cc05344aDOI Listing

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