期刊
JOURNAL OF POWER SOURCES
卷 432, 期 -, 页码 102-111出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2019.05.079
关键词
Porous carbon material; Supercapacitor; Metal-organic frameworks; Nitrogen-doping
资金
- National Natural Science Foundation of China [21676022, 21706004]
- Fundamental Research Funds for the Central Universities [BHYC1701A, ZY1907]
Nitrogen-doped porous carbon is prepared by the fusion and carbonization processes of Al-based metal-organic frameworks and melamine, and following removal of thermal decomposed Al2O3 via dissolving in NaOH solution. The hierarchically porous carbon has a large surface area of 1452 m(2) g(-1) with mesopores of suitable size (4.64 nm). It exhibits an enhanced specific capacitance and rate capability of 318.7 F g(-1)(1 A g(-1)) and 210.5 F g(-1) (100 A g(-1)), respectively. The cycling life tests indicate the material offers superior stability with 96.4% retention at ultra-high current density of 100 A g(-1) during 50, 000 cycles. The improved electrochemical properties of this carbon can be attributed to the exogenous nitrogen-doping, special ellipsoid shape and hierarchically porous structure. This method is a new potential strategy to configure unique structure and particular heteroatom-doped porous carbon material for power supercapacitors via the fusion of metal-organic frameworks and heteroatom-containing polymer.
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