期刊
APPLIED SURFACE SCIENCE
卷 427, 期 -, 页码 1158-1165出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.09.064
关键词
Diatom; MnO2; Supercapacitor; Nanostructures
类别
资金
- National Natural Science Foundation of China [21576034]
- Innovative Research Team of Chongqing [CXTDG201602014]
- State Education Ministry and Fundamental Research Funds for the Central Universities [106112017CDJQJ138802, 106112016CDJZR135506]
A rational and hierarchical Diatom@CuO@MnO2 hybrid was fabricated via a facile electroless copper plating technology, following by a one-pot hydrothermal reaction with KMnO4. Such unique architecture acts as a supercapacitor electrode, which exhibits a high specific capacitance (240 F g(-1) at a current density of 0.5 A g(-1)), good rate capability (58.3% retention when the current density increases from 0.5 to 5 A g(-1)), and excellent electrochemical cycling stability (91.2% retention of the initial specific capacitance after 4000 cycles at a current density of 2 A g(-1)). The impressive electrochemical performance of this Diatom@CuO@MnO2 electrode ascribed to the synergistic effect between the CuO particles and MnO2 nanosheets. Therefore, it can be expected that this unique Diatom@CuO@MnO2 electrode may have great promise for the application in supercapacitors. (C) 2017 Elsevier B.V. All rights reserved.
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