纳米结构坡缕石改性聚苯胺超级电容器电极材料的研究  

Nanostructured Palygorskite Modified Polyaniline Electrode Materials for Supercapacitors

作　　者：代涛娟[1] 王昱豪[1] 雷文[1] 何平[1] 

机构地区：[1]西南科技大学材料科学与工程学院,绵阳621010

出　　处：《武汉理工大学学报》2013年第9期11-15,共5页Journal of Wuhan University of Technology

基　　金：四川省科技支撑计划(2010GZ0300)

摘　　要：通过原位聚合法制备了超级电容器用坡缕石改性聚苯胺复合电极材料,对其结构和形貌进行了表征,并在1.0mol/L H2SO4溶液中对其电化学性能进行了测试。结果表明,复合材料粒径较聚苯胺减小,分散性提高,比电容随坡缕石含量的增加呈先增大后减小的趋势。在几种不同坡缕石含量的复合材料中,坡缕石含量为1.8%的复合材料比电容达最大。与聚苯胺电容(360F/g)相比,在1.0A/g电流密度下,其比电容提高到485F/g;在3.0A/g电流密度下,其1 000次充放电的电容保持率为75.4%,高于相同条件下聚苯胺的电容保持率(55.7%)。A serials of nanostructured palygorskite modified polyaniline electrode materials for supercapacitors were prepared by in-situ polymerization. The structure and surface features of the composites were characterized, and the elec-trochemical performances of the composites were measured in 1.0 mol/L H2 SO4 electrolyte. It was shown that the com-posites had smaller particle and higher disperse degree compared with individual polyaniline, while the specific capacitance increased and then decreased with increasing the content of palygorskite. The composites with 1.8 % palygorskite had the maximum specific capacitance among those composites with different content of palygorskite. Compared with that of polyaniline （373 F/g）, the specific capacitance increased to 485 F/g for composite with 1.8% palygorskite at current den-sity of 1.0 A/g. At current density of 3. 0 A/g, the capacitance retention of 75. 4% was obtained after 1 000 cycles, which was higher than individual polyaniline （55.7%） under the same condition.

关 键 词：坡缕石 聚苯胺 原位聚合 超级电容器 比电容 

分 类 号：O646[理学—物理化学] TB34[理学—化学]