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Electrochemical properties of magnesium doped LiFePO4 cathode material prepared by sol-gel method
- Authors
- Zhao, Xiaohui; Baek, Dong-Ho; Manuel, James; Heo, Min-Yeong; Yang, Rong; Ha, Jong Keun; Ryu, Ho-Suk; Ahn, Hyo-Jun; Kim, Ki-Won; Cho, Kwon-Koo; Ahn, Jou-Hyeon
- Issue Date
- Oct-2012
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Composites; Sol-gel chemistry; Electrochemical measurements; Electrochemical properties; Energy storage
- Citation
- MATERIALS RESEARCH BULLETIN, v.47, no.10, pp 2819 - 2822
- Pages
- 4
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- MATERIALS RESEARCH BULLETIN
- Volume
- 47
- Number
- 10
- Start Page
- 2819
- End Page
- 2822
- ISSN
- 0025-5408
1873-4227
- Abstract
- Magnesium doped Li1-2xMgxFePO4/C (x = 0.00, 0.01, 0.03, 0.05) cathode materials were synthesized by sol-gel method, and the effect of magnesium doping as well as its content on the electrochemical properties for lithium batteries was also investigated. Their morphology was studied with field emission scanning electron microscope and Li1-2xMgxFePO4 materials showed the olivine phase without impurities. The thin carbon layer of Li1-2xMgxFePO4/C was confirmed by high resolution transmission electron microscopy. The magnesium doped Li1-2xMgxFePO4/C particles were smaller than those undoped. The Li1-2xMgxFePO4/C materials showed better cycling behavior than undoped LiFePO4, especially at high C-rate in which Li0.94Mg0.03FePO4/C composition exhibited the best electrochemical properties. (C) 2012 Elsevier Ltd. All rights reserved.
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