Journal
CARBON
Volume 78, Issue -, Pages 455-462Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.07.026
Keywords
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Funding
- National Natural Science Foundation of China [21171015, 21373195]
- Recruitment Program of Global Experts
- program for New Century Excellent Talents in University [NCET-12-0515]
- Fundamental Research Funds for the Central Universities [WK2060140014, WK2060140016]
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Here we demonstrated porous carbon nanofibers encapsulated with crystalline red P (P-PCNFs) as free-standing anodes for LIBs with high specific capacity and excellent electrochemical cycling. The porous carbon nanofibers were fabricated by electrospinning of polyacrylonitrile/poly(methyl methacrylate) (PAN/PMMA), followed by thermal carbonization process. The P-PCNFs delivered an excellent cyclability (similar to,2030 mAh g(-1) at 0.1C rate after 100 cycles) and outstanding rate capability (380 mAh g(-1) at 11C for 10 cycles), where those capacity values were calculated based on the red P percentage. Even at a rate of 1C, this composite could deliver a superior capacity of 1042 mAh g(-1) based on the content of red P after 100 cycles. The pores of porous carbon nanofibers could effectively accommodate the volume change of crystalline red P during cycling. Furthermore, the carbon nanofibers matrix not only enables fast access of ions but also grants the electrode with good conductivity and high mechanical flexibility. (C) 2014 Elsevier Ltd. All rights reserved.
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