Nanoscience and Nanotechnology Commons^™

Advanced Materials For Lithium Ion Batteries:Surface And Interface Chemistry, Yulong Liu

Electronic Thesis and Dissertation Repository

Lithium ion batteries (LIBs) are the indispensable energy storage devices in our modern society. LiFePO₄, as one of the most promising cathode, are widely used in LIBs. However, impurity phases are formed in LiFePO₄ during carbon coating process due to the intrinsic strong reducing atmosphere. Herein, as the first part of my work, interface chemistry of carbon coating on LiFePO₄ are symmetrically investigated by advanced characterization techniques. Two distinct secondary phases are formed during carbon coating process at different condition. Moreover, secondary phase formation is controllable by changing the particle size of LiFePO₄, annealing …