Study on the rapid synthesis of LiNi{sub}(1-x)Co{sub}xO{sub}2 cathode material for lithium secondary battery

摘要

LiNi{sub}(1-x)Co{sub}xO{sub}2 (x = 0, 0.1, 0.2) cathode materials were successfully synthesized by a rheological phase reaction method with calcination time of 0.5 h at 800℃. All obtained powders are pure phase with α-NaFeO{sub}2 structure (R-3m space group). The samples deliver an initial discharge capacity of 182, 199 and 189 mAhg{sup}(-1) (25 mAg{sub}(-1), 4.35-3.0V), respectively. The reaction mechanism was also discussed, which consists of a series of defect reactions. As a result of these defect reactions, the reaction of forming LiNi{sub}(1-x)Co{sub}xO{sub}2 takes place in high speed.