期刊
JOURNAL OF POWER SOURCES
卷 305, 期 -, 页码 122-127出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.11.092
关键词
Hierarchical porosity; High capacity; Nitrogen-doped graphene-like membrane; Cathode material; Lithium-ion batteries
资金
- Nature Science Foundation of Xinjiang Province [2013211A004]
- High-tech Project of Xinjiang Province [201515105]
- Science and Technology Assistance of Xinjiang Province [201491128]
- Program for New Century Excellent Talents in University [NCET-12-1076]
- National Natural Science Foundation of China [21161021, 21466036]
LiFePO4 in situ coated with hierarchical porous nitrogen-doped graphene-like membrane (HPNGM) composite derived from a electrospun polymer membrane (EPM) precursor has been achieved for the first time. The N-doped graphene-like membrane which is in situ coating on LiFePO4 can provide a highly conductive layer, and the hierarchical porous structure facilitates Li+ transfer. The composite exhibits a high reversible capacity (171 mAh g(-1) at 0.1 C), excellent high-rate capability and cycling stability. In addition to construct the traditional structure of nanofiber or nanowire, the EPM can also form graphene-like structure after annealing, which is a new application in constructing sheet structure by electrospinning. (C) 2015 Elsevier B.V. All rights reserved.
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