The Characteristics of Fine-sized LiMn_((12-x)/6)Al_(x/6)O_4(0.05≤ x≤ 2) Powders Prepared by Spray Pyrolysis

摘要

The series of partially Al-substituted lithium manganese oxides were prepared by spray pyrolysis process from spray solutions with citric acid and ethylene glycol. The as-prepared particles obtained from spray solution with citric acid and ethylene glycol turned to fine-sized LiMn_((12-x)/6)Al_(x/6)O_4(0.05≤ x≤ 2) particles with regular morphology after post-annealing. The discharge capacities of the particles post-annealed at temperature of 800℃ changed from 128 to 84 mAh/g when the x of the LiMn_((12-x)/6)Al_(x/6)O_4 particles was changed from 0 to 2. The Al-doped LiMn_2O_4 fine particles prepared by spray pyrolysis from spray solution with citric acid and ethylene glycol had good cycle properties.