Bulletin of the Korean chemical society | |
Facile Synthesis of Co3O4/Mildly Oxidized Multiwalled Carbon Nanotubes/Reduced Mildly Oxidized Graphene Oxide Ternary Composite as the Material for Supercapacitors | |
Mei-yu Lv1  Lai Wei1  Geng Su1  Jian-jian Zhong1  Kai-yu Liu1  Yan Li1  | |
关键词: Cobalt oxide nanoparticles; Mildly oxidized Graphene; Mildly oxidized multiwalled carbon nanotubes; Hydrothermal method; Supercapacitors; | |
DOI : | |
学科分类:化学(综合) | |
来源: Korean Chemical Society | |
【 摘 要 】
A three-dimensional (3D) Co3O4/mildly oxidized multiwalled carbon nanotubes (moCNTs)/reduced mildly oxidized graphene oxide (rmGO) ternary composite was prepared via a simple and green hydrolysishydrothermal approach by mixing Co(Ac)2·4H2O with moCNTs and mGO suspension in mixed ethanol/H2O. As characterized by scanning electron microscopy and transmission electron microscopy, Co3O4 nanoparticles with size of 20-100 nm and moCNTs are effectively anchored in mGO. Cyclic voltammetry and galvanostatic charge-discharge measurements were adopted to investigate the electrochemical properties of Co3O4/moCNTs/ rmGO ternary composite in 6 M KOH solution. In a potential window of 0-0.6 V vs. Hg/HgO, the composite delivers an initial specific capacitance of 492 F g−1 at 0.5 A g−1 and the capacitance remains 592 F g−1 after 2000 cycles, while the pure Co3O4 shows obviously capacitance fading, indicating that rmGO and moCNTs greatly enhance the electrochemical performance of Co3O4.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912010245151ZK.pdf | 4378KB | download |