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- Title
Preparation and characterization of high-rate and long-cycle LiFePO/C nanocomposite as cathode material for lithium-ion battery.
- Authors
Wang, Xingchao; Huang, Yudai; Jia, Dianzeng; Guo, Zaiping; Ni, Duo; Miao, Ming
- Abstract
Olivine LiFePO/C nanocomposite cathode materials with small-sized particles and a unique electrochemical performance were successfully prepared by a simple solid-state reaction using oxalic acid and citric acid as the chelating reagent and carbon source. The structure and electrochemical properties of the samples were investigated. The results show that LiFePO/C nanocomposite with oxalic acid (oxalic acid: Fe= 0.75:1) and a small quantity of citric acid are single phase and deliver initial discharge capacity of 122.1 mAh/g at 1 C with little capacity loss up to 500 cycles at room temperature. The rate capability and cyclability are also outstanding at elevated temperature. When charged/discharged at 60 °C, this materials present excellent initial discharge capacity of 148.8 mAh/g at 1 C, 128.6 mAh/g at 5 C, and 115.0 mAh/g at 10 C, respectively. The extraordinarily high performance of LiFePO/C cathode materials can be exploited suitably for practical lithium-ion batteries.
- Subjects
NANOCOMPOSITE materials; COMPOSITE materials; ELECTROCHEMISTRY; OXALIC acid; OXALATES; LITHIUM ions
- Publication
Journal of Solid State Electrochemistry, 2012, Vol 16, Issue 1, p17
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-010-1269-4