Co2P-Induced Abnormal Electrolyte Decomposition Encountered with LiCoPO4. (22nd May 2015)

• Record Type: Journal Article
• Authors: Chen, Weibing; Fang, Haisheng; Yang, Bin; Ma, Wenhui
• Is Part Of: ECS Electrochemistry Letters. Volume 4:Number 7(2015)
• Page Start: A76
• Page End: A78
• Publication Date: 2015-05-22
• DOI: 10.1149/2.0101507eel
• Languages: English
• ISSNs: 2162-8726

Abstract

Abstract : Herein an abnormal increase of electrolyte decomposition is observed for LiCoPO4 and a new effect of Co2 P is revealed. Our study demonstrates that the presence of Co2 P even in a small amount can significantly accelerate the electrolyte decomposition at high voltage in the charge process for LiCoPO4 due to the catalytic property of Co2 P. Such a catalytic effect of Co2 P can account for the abnormal increase of electrolyte decomposition observed for bigger LiCoPO4 crystals. Therefore, the formation of Co2 P should be precluded in the synthesis of LiCoPO4, and such a requirement will have a drastic consequence on material processing.