Improved Rate Capability of Li/Li3V2(PO4)3 Cell for Advanced Lithium Secondary Battery

Bulletin of the Korean chemical society

Hyun-He Lim¹  Nagarajan Sivakumar¹  Woo-Seong Kim¹  Yun-Sung Lee¹  A-Ra Cho¹  Won-Sub Yoon¹ 

关键词: Lithium vanadium phosphate;    Ball milling;    Solid state route;    Lithium-ion batteries;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

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).

【 授权许可】

Unknown