摘要
以水合肼、二硫化碳为原料,三乙胺为催化剂,氢氧化钠为转换剂,硫酸为酸化剂,在85℃乳液聚合得到2,5-二巯基-1,3,4噻二唑(DMcT),用红外光谱鉴定产物的结构;采用交流阻抗法研究PAn,PMOT和CuC2O4对DMcT的电催化作用,测试PAn/DMcT复合正极材料的充放电性能。研究结果表明,最佳反应条件为:n(二硫化碳):n(氢氧化钠):n(水合肼)=3.5:1.5:1,酸化pH值控制在0.6~1.0,此时,产率达到92%;PAn对DMcT的电催化作用明显,使其阻抗从1.28kΩ减小至270Ω;PAn/DMcT复合正极材料首次放电比容量为225mA·h/g,与DMcT的135mA·h/g相比,放电比容量有明显提高。
2, 5-dimercaptor-1, 3, 4-thiadiazole was synthesized by emulsion polymerization method at 85℃ with triethylamine as the accelerating agent, sodium hydroxide as the convert agent, sulfuric acid as the acidulant. The structure of the product was analyzed by infrared spectrum. The AC impedance method was adopted to study the catalysis effect of PAn, PMOT, CUC2O4 and the charge -discharge capacity of PAn/DMcT was tested. The results show that under the optimum reaction condition, i.e. n(CS2):n(NaOH):n(N2Ha·H2O)=3.5:15:1 and the acidulant pH=0.6-1.0, the yield reaches up to 92%. The effect of PAn on the electrochemical activity of DMcT is very obvious, and the initial discharge capacity of PAn/DMcT reaches up to 225 mA·h/g, compared with 135 mA·h/g of DMcT.
出处
《中南大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2009年第2期305-310,共6页
Journal of Central South University:Science and Technology
基金
湖南省自然科学基金资助项目(06JJ2008)
关键词
2
5-二巯基.1
3
4噻二唑
乳液聚合
交流阻抗
充放电性能
2, 5-dimercaptor-1, 3, 4-thiadiazole
emulsion polymerization
AC impedance
charge and discharge capacity