Electrochemical properties of carbon-coated LiFePO4 synthesized by a modified mechanical activation process
- Authors
- Kim, Jae-Kwang; Cheruvally, Gouri; Ahn, Jou-Hyeon; Hwang, Gil-Chan; Choi, Jin-Beom
- Issue Date
- Oct-2008
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Electronic materials; Chemical synthesis; Electron microscopy; Electrical conductivity; Electrochemical properties
- Citation
- JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, v.69, no.10, pp 2371 - 2377
- Pages
- 7
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
- Volume
- 69
- Number
- 10
- Start Page
- 2371
- End Page
- 2377
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/27264
- DOI
- 10.1016/j.jpcs.2008.03.018
- ISSN
- 0022-3697
1879-2553
- Abstract
- Carbon-coated lithium iron phosphate (LiFePO4/C) composites were synthesized by conventional mechanical activation (MA) process and also by a modified MA process. Phase-pure particles were obtained of similar to 100nm size with a nano-meter thick web of carbon surrounding the particles. The composite prepared by the modified MA process shows good performance as cathode material in lithium cells at room temperature. A high performance was achieved at 0.1 C-rate with > 96% utilization of the active material. A stable cycle performance even at higher C-rates was achieved with a cathode that has a total carbon content of only 12wt%. The use of the modified MA process to synthesize LiFePO4/C has promise to be an efficient process to decrease the total carbon content of the cathode, resulting in the enhanced energy density. (C) 2008 Elsevier Ltd. All rights reserved.
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Collections - 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles

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