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- Title
Facile fabrication of rGO/CNT hybrid fibers for high-performance flexible supercapacitors.
- Authors
Jiang, Naimeng; Huang, Furong; Xia, Weiwei; Wei, Jianwu; Zhou, Liya; Huo, Zhibao; Pang, Qi
- Abstract
Novel reduced graphene oxide and carbon nanotube (rGO/CNT) hybrid fibers were prepared using a facial low-temperature chemical reduction self-assembly with vitamin C as the reducing agent. Mechanical measurements showed that hybrid fibers with an ultimate elongation of 150% had better mechanical properties than the single rGO fiber with an ultimate elongation of 105%. Cyclic voltammetry (CV) results showed that rGO/CNTs hybrid fibers exhibited better electrochemical performance than the rGO fiber because of the larger CV curve area of the former. The volumetric specific capacitance of the rGO/CNTs electrode was 559.9 F cm, and its qualitative specific capacitance was 59.76 F g at a high current density of 1 A g. Both the volumetric specific capacitance and qualitative specific capacitance of the rGO/CNTs hybrid fibers were higher than those of single rGO fibers, particularly at low sweep speed. The scanning electron microscopy and transmission electron microscopy images of the rGO/CNTs composite fiber clearly showed the rGO and CNTs co-assembly and the interconnected porous structure formation. In the hybrid nanostructure, CNTs served as a reinforced bar, and the synergic effect between rGO and CNTs led to hybrid fibers with enhanced mechanical and electrochemical performances. The flexible rGO/CNT hybrid fibers showed large volumetric capacity, good rate capability, high stability and excellent flexibility. The micro-SCs made of the rGO/CNT hybrid fibers electrode are ideal energy-storage devices for next-generation flexible wearable electronics.
- Subjects
FABRICATION (Manufacturing); SUPERCAPACITORS; GRAPHENE oxide; CARBON nanotubes; CHEMICAL reduction; VITAMIN C
- Publication
Journal of Materials Science: Materials in Electronics, 2017, Vol 28, Issue 16, p12147
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-017-7029-9