文献类型：期刊文献

英文题名：MnO2 nanoflake/polyaniline nanorod hybrid nanostructures on graphene paper for high-performance flexible supercapacitor electrodes

作者：Li, Huailong[1];He, Ying[1];Pavlinek, Vladimir[2];Cheng, Qilin[1,2];Saha, Petr[2];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Tomas Bata Univ Zlin, Ctr Polymer Syst, Zlin 76001, Czech Republic

年份：2015

卷号：3

期号：33

起止页码：17165

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20153301170060);WOS:【SCI-EXPANDED(收录号:WOS:000359459900030)】；

基金：This work was supported by the National Natural Science Foundation of China (21236003, 21371057, 21322607) and the Basic Research Program of Shanghai (13NM1400801, 13JC1401901).

语种：英文

外文关键词：Composite materials - Electrolytes - Manganese oxide - Electrochemical electrodes - Sodium sulfate - Graphene - Nanorods - Paper - Sulfur compounds - Supercapacitor

摘要：A facile two-step strategy is adopted to construct a free-standing composite paper of MnO2 nanoflake/ polyaniline (PANI) nanorod hybrid nanostructures on reduced graphene oxide (RGO) for flexible supercapacitor electrode application. MnO2 nanoflakes are first grown on RGO paper via an electrodeposition method, followed by assembly of PANI nanorods between MnO2 nanoflakes by in situ polymerization using camphorsulfonic acid as a dopant. The morphology and structure of the composite paper are characterized and the electrochemical properties are systematically investigated. The interconnected PANI nanorods deposited on the interlaced MnO2 nanoflakes have a length of similar to 100 nm and a diameter of similar to 30 nm, creating plenty of open porous structures which are beneficial for ion penetration into the electrode. The RGO/MnO2/PANI composite paper shows a large specific capacitance of 636.5 F g(-1) at 1.0 A g(-1) in 1.0 M Na2SO4 electrolyte and excellent cycling stability (85% capacitance retention after 10(4) cycles). The optimized composite structure with more electroactive sites, fast ion and electron transfer, and strong structural integrity endows the ternary composite paper electrode with outstanding electrochemical performance.