Journal
SOLID STATE SCIENCES
Volume 41, Issue -, Pages 36-42Publisher
ELSEVIER
DOI: 10.1016/j.solidstatesciences.2015.02.003
Keywords
Doping boron; Carbon fibers; Anode material; Lithium-ion batteries
Funding
- National Defense Science and Technology Innovation Program of Chinese Academy of Sciences, Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi [20120313009-3]
- School science foundation of North University of China
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A facile route, for the first time, was developed to fabricate boron-doped carbon fibers (BDCFs). Boron was doped into mesosphere pitch-based carbon fibers (CFs) by exposing the CFs in a vapor of boron by the decomposition of boron carbide. The microstructure of BDCFs was characterized by SEM, TEM, XRD and Raman spectroscopy. When used as anode materials for the lithium-ion batteries, BDCFs electrode exhibits an improved performance. Concretely, the specific capacity of BDCFs still had a value of over 400 mAh g(-1) after 100 cycles. Moreover, BDCFs exhibits better rate capability and less hysteresis in comparison to the pristine CFs. Such enhanced lithium storage capability can be attributed to the improvement of graphitization properties and the high amount of defects induced by boron. (C) 2015 Elsevier Masson SAS. All rights reserved.
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