Citation: WANG Wei-Kun, ZHANG Yong-Yong, WANG An-Bang, YU Zhong-Bao, HAN Min-Fang, YANG Yu-Sheng. Electrochemical Performance of 1,4,5,8-Tetrahydroxy-9,10-anthraquinone as Cathode Material in Lithium Batteries[J]. Acta Physico-Chimica Sinica, ;2010, 26(01): 47-50. doi: 10.3866/PKU.WHXB20100105
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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.
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