Journal
JOURNAL OF POWER SOURCES
Volume 166, Issue 1, Pages 260-265Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2006.12.092
Keywords
LiFePO4-C composite; vibrant type ball-milling; microwave heating; particle size; carbon distribution; discharge capacity; lithium battery
Funding
- Korea Institute of Industrial Technology(KITECH) [10016472] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A very simple and rapid method for synthesizing LiFePO4-C composite has been developed by vibrant type ball-milling for 30 min and microwave heating for 2-4 min. X-ray diffraction and Mossbauer spectroscopy verify that well-crystallized LiFePO4 without Fe3+ impurities is obtained. From laser particle size analysis and transmission electron microscopy, it is confirmed that a LiFePO4-C composite with fine and uniform particle size (mean particle size <= 0.640 mu m, D75 in volume distribution <= 0.592 mu m) and with extremely uniform carbon distribution is prepared by vibrant type ball-milling and microwave heating. The LiFePO4-C delivers a high initial discharge capacity of 161 mAh g(-1) at C/10 and shows very stable cycling behaviour. (c) 2007 Elsevier B.V. All rights reserved.
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