A post-oxidation strategy for the synthesis of graphene/carbon nanotube-supported polyaniline nanocomposites as advanced supercapacitor electrodes

被引：12
作者：
Lv, Dechao [1 ]
Shen, Jiali [1 ]
Wang, Gengchao [1 ]
机构：
[1] E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China
来源：
RSC ADVANCES | 2015年 / 5卷 / 31期
基金：
中国国家自然科学基金;
关键词：
WHISKER-LIKE POLYANILINE; HIGH-SURFACE-AREA; MESOPOROUS CARBON; ELECTROCHEMICAL CAPACITANCE; COMPOSITE ELECTRODE; PERFORMANCE; NANOFIBERS; POLYMERIZATION; FABRICATION; OXIDE;
D O I：
10.1039/c4ra13737j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A post-oxidation strategy was proposed to synthesize sulfonated graphene nanosheets/carboxylated multi-walled carbon nanotube-supported PANI (sGNS/cMWCNT@PANI) hierarchical nanocomposites by an interfacial polymerization as advanced supercapacitor electrodes. Field emission scanning electron microscopy (FE-SEM) and high resolution transmission electron microscopy (HRTEM) indicated that the morphology with a coexisting structure of sGNS supported PANI nanorod arrays and coaxial cMWCNT/PANI nanocables did not show significant differences through a post-oxidation process. X-ray diffraction (XRD) and thermogravimetic analysis (TGA) proved that the oligomers of PANI were eliminated during the post-oxidation process. The spectral analysis revealed that the post-oxidation led to an increasing content of quinoid structure in the nanocomposites. Electrochemical measurements showed that the sGNS/cMWCNT@PANI with a post-oxidation process exhibited improved cycling stability with 91.4% capacitance retention after 5000 cycles.
引用
收藏
页码：24599 / 24606
页数：8
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