期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 6, 期 39, 页码 18987-18993出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta07711h
关键词
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资金
- Natural Science Foundation of Fujian Province of China [2014H0028]
- Fujian Key Laboratory of Photoelectronic Functional Materials (Huaqiao University) [FJPFM-201702]
- Educational Research Projects for young and middle-aged teachers in Fujian [JT180422]
Biomorphic 2D Co3O4 nanosheets/mesoporous carbon microtube composites are solvothermally prepared and subsequently calcined using ramie as a biotemplate. The as-prepared composites are fabricated using two sides of Co3O4 nanosheets (NSs) supported on porous carbon microtubes and exhibit a unique tubular morphology and porous features. The present biomorphic materials show a specific capacitance of 1280.6 F g(-1) at 1 A g(-1), and outstanding charge-discharge cycle stability with a capacitance retention of 96.89% after 15000 cycles. The remarkable pseudocapacitive performance and cyclability are attributed to the unique microstructure, the high specific surface area and the optimized hierarchical microstructure inherited from the biotemplate.
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