物理化学学报 >> 2010, Vol. 26 >> Issue (01): 47-50.doi: 10.3866/PKU.WHXB20100105

电化学 上一篇    下一篇

锂电池正极材料1,4,5,8-四羟基-9,10-蒽醌的电化学性能

王维坤, 张勇勇, 王安邦, 余仲宝, 韩敏芳, 杨裕生   

  1. 中国矿业大学(北京)化学与环境工程学院, 北京 100083; 防化研究院军用化学电源研究与发展中心, 北京 100191
  • 收稿日期:2009-05-19 修回日期:2009-08-30 发布日期:2009-12-29
  • 通讯作者: 王维坤 E-mail:wangweikun2002@163.com

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

PDF

3894

赞

摘要：

研究了一种新型有机醌类化合物1,4,5,8-四羟基-9,10-蒽醌(THAQ)及其氧化产物(O-THAQ)的电化学性能. 循环伏安和充放电结果显示, 在放电时材料中的羰基和羟基均被还原为烯醇锂盐(=C—O-Li+)结构, 其中羰基还原为烯醇锂盐结构的过程可逆. O-THAQ首次放电容量和循环性能都有显著提高, 氧化产物的首次放电容量为250 mAh·g-1, 20次循环容量为100 mAh·g-1. 讨论了THAQ氧化前后性能差异的原因.

关键词: 锂电池, 1,4,5,8-四羟基-9,10-蒽醌, 有机正极材料, 电化学性能

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