Synthesis and electrochemical evolution of mesoporous LiFeSO_4F_(0.56)(OH)_(0.44) with high power and long cyclability

摘要

A feasible and scalable two-step method is developed to synthesize LiFeSO_4F_y(OH)_(1-y) which could deliver 92 and 80 mA h g_(-1) when cycled at 1 C and 15 C, respectively. Moreover, with 80% of capacity retention after 2800 cycles at 1 C, this material should be of great interest as a contender to LiFePO_4 for use in high power Li-ion batteries.