標題: Vanadium Substitution of LiFePO4 Cathode Materials To Enhance the Capacity of LiFePO4-Based Lithium-Ion Batteries
作者: Chiang, Ching-Yu
Su, Hui-Chia
Wu, Pin-Jiun
Liu, Heng-Jui
Hu, Chih-Wei
Sharma, Neeraj
Peterson, Vanessa K.
Hsieh, Han-Wei
Lin, Yu-Fang
Chou, Wu-Ching
Lee, Chih-Hao
Lee, Jyh-Fu
Shew, Bor-Yuan
電子物理學系
Department of Electrophysics
公開日期: 22-十一月-2012
摘要: The mechanism of enhancing the capacity of the LiFePO4 cathodes in lithium ion batteries by the addition of a small amount of vanadium, which locate on the lithium site and induce lithium vacancies in the crystal structure, is reported in this article. As a result, the capacity increases from 138 mAh/g found for pristine LiFePO4 to 155 mAh/g for the V-added compound, and the conductivity increases from 4.75 x 10(-4) S/cm for the LiFePO4 without V addition to 1.9 x 10(-2) S/cm for the V-added compound. A possible model to facilitate the enhancement of conductivity and capacity is described with evidence supported by X-ray powder diffraction, X-ray absorption spectroscopy, and neutron powder diffraction data.
URI: http://dx.doi.org/10.1021/jp307047w
http://hdl.handle.net/11536/20609
ISSN: 1932-7447
DOI: 10.1021/jp307047w
期刊: JOURNAL OF PHYSICAL CHEMISTRY C
Volume: 116
Issue: 46
起始頁: 24424
結束頁: 24429
顯示於類別:期刊論文


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  1. 000311461100003.pdf