Journal
CARBON
Volume 127, Issue -, Pages 85-92Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2017.10.084
Keywords
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Funding
- National Natural Science Foundation of China [51772249, 51402236, 51472204]
- Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China [123-QZ-2015]
- Key Laboratory of New Ceramic and Fine Processing (Tsinghua University) [KF201607, SKLD17KM02]
- State Key Laboratory of Control and Simulation of Power System and Generation Equipment (Tsinghua University) [KF201607, SKLD17KM02]
- Fundamental Research Funds for the Central Universities [G2017KY0308]
- Program of Introducing Talents of Discipline to Universities [B08040]
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Nitrogen-doped ordered mesoporous carbon spheres (N-OMCS) were prepared by a facile one-pot soft-templating and one-step pyrolysis method. The as-obtained N-OMCS possesses an average diameter of around 300 nm, a moderate specific surface area of 439 m(2) g(-1) and uniform mesopore size at around 5.0 nm. Owing to the ordered meso-structure and nitrogen doping, the N-OMCS materials, when used as supercapacitor electrodes, delivers a high specific capacitance of 288 F g(-1) at a current density of 0.1 A g(-1). More remarkably, the N-OMCS electrode shows excellent rate capability with 66% capacitance retention at an ultrahigh current density of 50 A g(-1) and outstanding cycling stability with almost no degradation over 25,000 cycles. The work would open up a new avenue to synthesize carbon spheres with mesoporous structure and nitrogen doping for high-performance supercapacitor applications. (C) 2017 Elsevier Ltd. All rights reserved.
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