The Characteristics of Fine-sized LiMn{sub}((12-x)/6)Al{sub}(x/6)O{sub}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{sub}((12-x)/6)Al{sub}(x/6)O{sub}4(0.05≤x≤2) particles with regular morphology after post-annealing. The discharge capacities of the particles post-annealed at temperature of 800°C changed from 128 to 84 mAh/g when the x of the LiMn{sub}((12-x)/6)Al{sub}(x/6)O{sub}4 particles was changed from 0 to 2. The Al-doped LiMn{sub}2O{sub}4 fine particles prepared by spray pyrolysis from spray solution with citric acid and ethylene glycol had good cycle properties.