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11,11,12,12-tetracyano-9,10-anthraquinonedimethane as a high potential and sustainable cathode for organic
Weibo Shi1, Mengcheng Tang1, Wenwen Deng1
1Institute of Materials Science & Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, Suzhou 215000, PR China.
Abstract:
We fabricated a potassium-ion battery by using 11,11,12,12-tetracyano-9,10-anthraquinonedimethane (TCAQ) as the cathode for the first time. Owing to the unique molecular structure and configuration of ionic liquid electrolytes, TCAQ shows a high redox potential of 2.6 V vs. K+/K while delivering a capacity of 88 mAh g-1 at a current density of 17 mA g-1 and a capacity retention of 61% after 50 cycles. The mechanism of the reaction of TCAQ with K was investigated. The results prove that TCAQ holds great promise for broad applications in potassium-ion batteries while revealing new scientific insights into K+-organic cathode batteries.
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