Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (01): 47-50.doi: 10.3866/PKU.WHXB20100105

• ELECTROCHEMISTRY • Previous Articles     Next Articles

Electrochemical Performance of 1,4,5,8-Tetrahydroxy-9,10-anthraquinone as Cathode Material in Lithium Batteries

WANG Wei-Kun, ZHANG Yong-Yong, WANG An-Bang, YU Zhong-Bao, HAN Min-Fang, YANG Yu-Sheng   

  1. School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, P. R. China; Military Power Sources Research and Development Center, Research Institute of Chemical Defense, Beijing 100191, P. R. China
  • Received:2009-05-19 Revised:2009-08-30 Published:2009-12-29
  • Contact: WANG Wei-Kun E-mail:wangweikun2002@163.com

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Abstract:

We investigated the use of a novel organic compound, 1,4,5,8-tetrahydroxy-9,10-anthraquinone (THAQ), and its oxidized product (O-THAQ) as cathode materials for lithium batteries. Cyclic voltammetric (CV) and charge-discharge tests of the two materials showed that during the discharge process a carbonyl-lithium enolate transformation and a hydroxyl-lithium enolate transformation occurred and the former reaction was reversible. The initial and 20th cycle capacities of O-THAQ were 250 and 100 mAh·g-1, respectively. These values were higher than those for THAQ, which showed that pre-oxidizing THAQ effectively improved its electrochemical performance. We propose a reason for this improvement.

Key words: Lithium battery, 1,4,5,8-Tetrahydroxy-9,10-anthraquinone, Organic cathode material, Electrochemical performance