期刊
JOURNAL OF POWER SOURCES
卷 352, 期 -, 页码 34-41出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.03.088
关键词
Bacterial cellulose; Confined pyrolysis; Self-activation; Carbon nanofibers; Supercapacitors
资金
- National Key Basic Research Program of China (973 Program) [2014CB239701]
- National Natural Science Foundation of China [51372116, 51504139, 51672128]
- Natural Science Foundation of Jiangsu Province [BK20150739, BK20151468]
- Prospective Joint Research Project of Cooperative Innovation Fund of Jiangsu Province [BY2015003-7]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Bacterial cellulose (BC), a typical biomass prepared from the microbial fermentation process, has been proved that it can be an ideal platform for design of three-dimensional (3D) multifunctional nano materials in energy storage and conversion field. Here we developed a simple and general silica-assisted strategy for fabrication of interconnected 3D meso-microporous carbon nanofiber networks by confine nanospace pyrolysis of sustainable BC, which can be used as binder-free electrodes for high-performance supercapacitors. The synthesized carbon nanofibers exhibited the features of interconnected 3D networks architecture, large surface area (624 m(2) g(-1)), mesopores-dominated hierarchical porosity, and high graphitization degree. The as-prepared electrode (CN-BC) displayed a maximum specific capacitance of 302 F g(-1) at a current density of 0.5 A g(-1), high-rate capability and good cyclicity in 6 M KOH electrolyte. This work, together with cost-effective preparation strategy to make high-value utilization of cheap biomass, should have significant implications in the green and mass-producible energy storage. (C) 2017 Elsevier B.V. All rights reserved.
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