High-rate Charge-discharge Performance of Composite Electrodes of FeOOH-based Amorphous Particles and Carbon Powder

摘要

Composite electrode materials of amorphous FeOOH-based particles and carbon powder were prepared by heat treatment of composite powder obtained by hydrolyzing of mixed aqueous solutions of FeCl_3 and Ti(SO_4)_2 into which electron conducting carbon powder was dispersed. They exhibited high capacities over 150 mAh g~(-1) and good cycle performance at large charge-discharge current density of 5 raA cm~(-2) (ca. 1 A g~(-1)). In this case, the heat treatment was effective process to improve the cycle performance.