Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (Supp): 51-55.doi: 10.3866/PKU.WHXB2007Supp12

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2,5-Dimercapto-1,3,4-Thiadiazole for Lithium Batteries by Poly(3,4-ethylenedioxythiophene)

ZHANG Jing-Hua; ZHANG Yong-Sheng; ZHENG Mian-Ping; QI Lu; FENG Bo LI Li   

  1. CITIC GUOAN MGL New Materials and Technology Research Co. Ltd., Beijing 102200, P. R. China; New Energy Material and Technology Laboratory, Department of Applied Chemistry, Department of Applied Chemistry, College of Chemistry&Molecular Engineering, Peking University, Beijing 100871, P. R. China; Institute of Mineral Resources, CAGS, Beijing 100037, P. R. China
  • Received:1900-01-01 Revised:1900-01-01 Published:2008-01-04
  • Contact: QI Lu E-mail:qilu@pku.edu.cn

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Abstract: High electrocatalytic activity of an electropolymerized film of poly (3,4-ethylenedioxythiophene) (PEDOT) was reported toward the redox reaction of 2,5-dimercapto-1,3,4-thiadiazole (DMcT) as a promising cathode material for the lithium ion battery. Electrochemical performance of DMcT was improved by adding an appropriate quantity of PEDOT. Cyclic voltammetry showed improved electrochemical performance of DMcT on PEDOT-coated Pt electrode, indicating accelerated redox kinetics. Moreover, charge-discharge tests exhibited higher discharge capacity and slower capacity fading of the PEDOT-doped DMcT composite cathode compared with pure DMcT.

Key words: Poly(3,4-ethylenedioxythiophene), Filmelectrode, 2,5-Dimercapto-1,3,4-thiadiazole, Electrocatalytic effect

MSC2000: 

  • O646