Electrochemical cycling behavior of LiCoO2 cathode prepared by mechanical alloying of hydroxides

摘要: Abstract Well-ordered high-temperature LiCoO2 (HT-LiCoO2) is synthesized by mechanical alloying (MA) of LiOH·H2O and Co(OH)2 powders subsequent firing. Its electrochemical properties are investigated. The maximum discharge capacity a sample mechanically alloyed fired at 600 °C for 2 h 152 mAh g−1 the C/40 rate, which comparable to that obtained from made conventional solid state reactions. cycleability inferior, however, due relatively low crystallinity. When firing temperature increased 850 °C, first 142 mAh g−1 C/5 rate more than 10%, retains 93% its value after 30 cycles. These cycling about same, or slightly higher, those mixture same starting materials 8 h then 850 °C 24 h. Consequently, given lower and/or reduced reaction time, MA could prove promising synthetic process cathode used in rechargeable lithium batteries.