聚3-甲氧基噻吩对二巯基噻二唑的电化学改性的研究

聚3-甲氧基噻吩对二巯基噻二唑的电化学改性的研究

张敬华¹⁾, 其鲁^{2, 4)},舒东³⁾, 杨立红²⁾, 张晓雨²⁾
(¹⁾中信国安盟固利新能源科技有限公司, 北京, 102200; ²⁾北京大学化学与分子工程学院,应用化学系,新能源材料与技术实验室, 北京, 100871; ³⁾华南师范大学化学与环境学院, 广州, 510006; ⁴⁾通讯作者:

收稿日期:2006-09-18 出版日期:2006-12-30 发布日期:2006-12-30

Study on the Electrochemical Performance of Improvement 2,5-Dimercapto-1,3,4-Thiadiazole (DMcT) by Poly(3-Methoxythiophene)(PMOT)

ZHANG Jinghua¹⁾, Qilu^{2, 4)}, SHU Dong³⁾, YANG Lihong²⁾, ZHANG Xiaoyu²⁾
(¹⁾ CITIC Guoan Mengguli New Energy Technology Co., Ltd, Beijing, 102200; ²⁾New Energy Materials and Te

Received:2006-09-18 Online:2006-12-30 Published:2006-12-30

摘要/Abstract

摘要： 研究了聚3-甲氧基噻吩(PMOT)膜电极在2,5-二巯基-1,3,4-噻二唑 (DMcT)溶液中电化学处理或浸泡后的循环伏安(CV)曲线的变化规律, 并研究了一定量的PMOT对DMcT充放电性能的影响。实验结果表明，PMOT膜电极在DMcT溶液中进行电化学处理或浸泡过程可使DMcT进入PMOT膜内部与PMOT形成复合物。PMOT对DMcT的电化学催化作用可能和二者之间形成的电子给体－受体复合物有关。该复合物的电化学氧化还原特性不同于PMOT和DMcT，其氧化还原反应速率和可逆性均优于DMcT, 且经过PMOT催化改性后, DMcT的放电容量得到了增加, 循环性能有了很大改善。

关键词: 聚3-甲氧基噻吩, 膜电极, 5-二巯基-1, 4-噻二唑, 电化学催化作用

Abstract: Electrochemical polymerized Poly(3-Methoxythiophene)(PMOT) film electrode was used to investigate the electro-catalytic effect of PMOT on the electrochemical redox reaction of 2,5-dimercapto-1,3,4-thiadiazole(DMcT). PMOT film electrode was electrochemically treated before it was scanned in 0.5mol/L DMcT 0.1mol LiClO₄/1L AN electrolyte. The cyclic voltammograms of PMOT film electrode in 0.5mol/L DMcT 0.1mol LiClO₄/1L AN solution changed with the above treatment, implying the electrocatalytic effect of PMOT on the redox reaction of DMcT. The formation of electron-donor-accept or adducts through the interaction between thiolordisulfide groups of DMcT and MOT groups of PMOT during the treatment was probably the reason of the catalysis. The electrochemical properties of the adduct were different from those of DMcT. The adduct possessed a higher discharge capacity and a better electrochemical reversibility than the case DMcT used alone.

Key words: Poly(3-Methoxythiophene), film electrode, 5-dimercapto-1, 4-thiadiazole, electrocatalytic effect

中图分类号:

O614
O646

张敬华¹⁾, 其鲁^{2, 4)},舒东³⁾, 杨立红²⁾, 张晓雨²⁾
(¹⁾中信国安盟固利新能源科技有限公司, 北京, 102200; ²⁾北京大学化学与分子工程学院,应用化学系,新能源材料与技术实验室, 北京, 100871; ³⁾华南师范大学化学与环境学院, 广州, 510006; ⁴⁾通讯作者: . 聚3-甲氧基噻吩对二巯基噻二唑的电化学改性的研究[J]. 北京大学学报（自然科学版）.

ZHANG Jinghua¹⁾, Qilu^{2, 4)}, SHU Dong³⁾, YANG Lihong²⁾, ZHANG Xiaoyu²⁾
(¹⁾ CITIC Guoan Mengguli New Energy Technology Co., Ltd, Beijing, 102200; ²⁾New Energy Materials and Te. Study on the Electrochemical Performance of Improvement 2,5-Dimercapto-1,3,4-Thiadiazole (DMcT) by Poly(3-Methoxythiophene)(PMOT)[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

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https://xbna.pku.edu.cn/CN/Y2006/V42/I7/18

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