期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 15, 期 3, 页码 2436-2440出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2015.10261
关键词
LiFePO4/C; Cathode Material; Electrochemical Properties; Life Cycle; Capacity Loss
类别
资金
- Technology Innovation Program - Ministry of Knowledge Economy (MKE, Korea) [10038855]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10038855] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
LiFePO4/C composite powder as cathode material and graphite powder as anode material for Li-ion batteries were synthesized by using the sol gel method. An electrochemical improvement of LiFePO4 materials has been achieved by adding polyvinyl alcohol as a carbon source into as-prepared materials. The samples were characterized by elemental analysis (EA), X-ray diffraction (XRD), and field emission scanning electron microscopy (FE-EM). The chemical composition of LiFePO4/C powders was in a good agreement with that of the starting solution. The capacity loss after 500 cycles of LiFePO4/C cell is 11.1% in room temperature. These superior electrochemical properties show that LiFePO4/C composite materials are promising candidates as cathode materials.
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