Improved performance of hydrothermally synthesized LiMnPO4 by Mg doping

Abstract

LiMnPO4 has been much attention for cathode material of next generation lithium ion battery. The most serious problem of this cathode material is intrinsic low electronic conductivity. In this study, Mg doping to carbon-coated LiMnPO4 prepared by hydrothermal route was performed to improve the electronic conductivity. The Mg doping did not affect on particle size and shape of LiMnPO4 as well as formation of surface carbon layer. In charge and discharge test, improvement of performance of LiMnPO 4 due to the Mg doping was clearly demonstrated. The improvement is attributed to superior electronic conductivity due to the Mg doping.