Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6616936 | Electrochimica Acta | 2013 | 4 Pages |
Abstract
LiMnPO4/C samples synthesized by two different methods are characterized by physical and electrochemical measurements and the importance of porosity on the electrochemical activity is investigated. The LiMnPO4/C synthesized by solid-state route has porous micro-aggregates while the micro-aggregates of the LiMnPO4/C synthesized by wet-chemistry route are dense. The difference in porosity of the two samples leads to a significantly different electrochemical activity. When cycled at the rate of 0.1 C, the sample synthesized by solid-state route can deliver a capacity of 121 mAh gâ1, while the sample synthesized by wet-chemistry route can only deliver a capacity of 36 mAh gâ1. Our result demonstrates that the formation of sufficient pores in the aggregates is essential to achieve high electrochemical activity for LiMnPO4 based material.
Related Topics
Physical Sciences and Engineering
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Authors
Haisheng Fang, Yuejiao Hu, Enrui Dai, Bin Yang, Yaochun Yao, Wenhui Ma, Yongnian Dai,