期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 31, 页码 18417-18427出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta06319f
关键词
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资金
- Shenzhen Science and Technology Innovation Committee [JCYJ20160428154522334]
- Hong Kong Research Grants Council [11338016]
- National Natural Science Foundation of China [51702371]
- Natural Science Foundation of Hunan Province [2019JJ50654]
- Scientific Research Foundation of Hunan Provincial Education Department [18C0207]
- 100 Talented Team of Hunan Province
Ternary metal oxides with unique mesoporous structures grown on nickel foam are considered as attractive candidates for high-performance supercapacitors because of their fast electron-transport access, rich accessibility of electroactive sites to the electrolyte, shortened ion diffusion path and wonderful synergetic effects of different metallic elements. Herein, a novel three-dimensional porous pentahedron structured aluminium manganese cobalt oxide (AMCO) synthesized via a facile and cost-effective hydrothermal method followed by a short post-annealing process has been reported. A high specific capacity of 923.1 C g(-1) at 1 A g(-1) as well as good cycling stability and 100% coulombic efficiency after 8000 cycles can be achieved when used as a supercapacitor electrode. In addition, the as-fabricated asymmetric supercapacitor based on the as-prepared AMCO positive electrode and an activated carbon negative electrode exhibits a high energy density of 88.2 W h kg(-1) at a power density of 799 W kg(-1), indicating its great promise for constructing high-performance energy storage devices.
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