文献类型：期刊文献

英文题名：Polyaniline-MnO₂ coaxial nanofiber with hierarchical structure for high-performance supercapacitors

作者：Jiang, Hao[1];Ma, Jan[2];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

年份：2012

卷号：22

期号：33

起止页码：16939

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000306972900036)】；

基金：This work was supported by the National Natural Science Foundation of China (20925621, 21176068, 21106038, 51173043, 21136006) and the Special Projects for Nanotechnology of Shanghai (1052nm02300, 11nm0500800, 11nm0500200), the Fundamental Research Funds for the Central Universities.

语种：英文

摘要：We demonstrated the facile loading of ultrafine and loosened K-birnessite MnO2 floccules on the surface of polyaniline (PANI) nanofibers by simply soaking the polyaniline nanofibers in a KMnO4 aqueous solution for electrochemical energy storage applications. The as-prepared PANI-MnO2 coaxial nanofibers with optimal composition, when applied as an electrode, exhibited a high specific capacitance (383 F g(-1) at 0.5 A g(-1)) with good rate and cycling stability in 1 M Na2SO4 aqueous solution. Such intriguing electrochemical performance is mainly attributed to the synergistic effects of the combined pseudo-capacitive contributions from the core and shell. The present findings promoted the development of advanced electrode materials, exhibiting huge potential for supercapacitors.