Improved electrochemical redox performance of 2,5-dimercapto-1,3,4-thiadiazole by poly(3-methoxythiophene)
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High electrocatalytic activity of an electropolymerized film of poly(3-methoxythiophene) (PMOT) is reported toward the redox reaction of 2,5-dimercapto-1,3,4-thiadiazole (DMcT) as a promising cathode material for the lithium ion battery. Cyclic voltammetry showed improved electrochemical performance of DMcT on PMOT-coated Pt electrode, indicating accelerated redox kinetics. Moreover, charge-discharge tests exhibited higher discharge capacity and slower capacity fading of the PMOT-doped DMcT composite cathode compared with pure DMcT.
Keywordscathode material DMcT lithium ion battery poly(3-methoxythiophene)
The authors wish to acknowledge financial support by the Scientific Research Foundation for Returned Overseas Chinese Scholars from the State Education Ministry, the China Postdoctoral Science Foundation (2004036514), and the State Key Scientific and Technological Project “Industrial Experimental Study of the Production of Lithium Carbonate Concentrate Extracted from Brine from Zabuye Salt Lake” (2001BA602B-02).