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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 32, Number 5
BKCSDE 32(5)
May 20, 2011 

Improved Rate Capability of Li/Li3V2(PO4)3 Cell for Advanced Lithium Secondary Battery
Hyun-He Lim, A-Ra Cho, Nagarajan Sivakumar, Woo-Seong Kim, Won-Sub Yoon, Yun-Sung Lee*,
Lithium vanadium phosphate, Ball milling, Solid state route, Lithium-ion batteries
Lithium vanadium phosphate, Li3V2(PO4)3 was prepared by a simple solid state route. It was found that making a fine powder of Li3V2(PO4)3 by the mechanical milling is very effective for increasing the insertion/extraction of lithium from Li3V2(PO4)3 structure. In charge/discharge test, the ball-milled Li3V2(PO4)3 sample exhibited a higher initial discharge capacity of 174 mAh/g in the voltage range of 3.0-4.8 V, compared with pure Li3V2(PO4)3 sample (152 mAh/g). Furthermore, the ball-milled Li3V2(PO4)3 presented not only higher cycle retention rate after 50 cycles, but also better rate capability compared with pure sample in the whole region (0.1- 7 C).
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