文献类型：期刊文献

英文题名：Polyaniline nanofibers with a high specific surface area and an improved pore structure for supercapacitors

作者：Xu, Hailing[1];Li, Xingwei[1];Wang, Gengchao[1]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat, Minist Educ,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：294

起止页码：16

外文期刊名：JOURNAL OF POWER SOURCES

收录：;EI(收录号：20152500956547);WOS:【SCI-EXPANDED(收录号:WOS:000358968400003)】；

基金：The authors are grateful for the financial support from Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Polyaniline; Organic solvents; Specific surface area; Electrochemical capacitance

摘要：Polyaniline (PANI) with a high specific surface area and an improved pore structure (HSSA-PANI) has been prepared by using a facile method, treating PANI nanofibers with chloroform (CHCl3), and its structure, morphology and pore structure are investigated. The specific surface area and pore volume of HSSA-PANI are 817.3 m(2) g(-1) and 0.6 cm(3) g(-1), and those of PANI are 33.6 m(2) g(-1) and 0.2 cm(3) g(-1). As electrode materials, a large specific surface area and pore volume can provide high electroactive regions, accelerate the diffusion of ions, and mitigate the electrochemical degradation of active materials. Compared with PANI, the capacity retention rate of HSSA-PANI is 90% with a growth of current density from 5.0 to 30 A g(-1), and that of PANI is 29%. At a current density of 30 A g(-1), the specific capacitance of HSSA-PANI still reaches 278.3 F g(-1), and that of PANI is 86.7 F g(-1). At a current density of 5.0 A g(-1), the capacitance retention of HSSA-PANI is 53.1% after 2000 cycles, and that of PANI electrode is only 28.1%. (C) 2015 Elsevier B.V. All rights reserved.