| Title |
Electrochemical Properties of Spinel LiMn_2O_4 Synthesized at Various Heat Treatment for Lithium lon Battery |
| Authors |
한태희(Han, Tae-Hee) ; 민형식(Min, Hyung-Sik) ; 한병성(Han, Byoung-Sung) |
| Keywords |
LiMn_2O_4 ; capacity ; spinel ; battery |
| Abstract |
In the past ten years, LiMn_2O_4-based spinels have been extensively studied as positive electrode materials for lithium-ion batteries. To improve the cycle performance of spinel LiMn_2O_4 as the cathode of 4V class lithium secondary batteries, spinel phases LiMn_2O_4 were prepared at various temperatures ranging form 600-900^{ cire}C in air. The results showed that charge.dischare capacity of LiMn_2O_4 varied at 1st temperature from 200°C to 600°C increase with increasing temperature. LiMn_2O_4 synthesized at 2nd temperature 750°C excellent charge.discharge capacity, efficiency and cyclability compared to the samplesynthesized different temperatures. The value of lst charge.discharge capacity was 121mAh/g, 118mAh/g, Also, the efficiency value was about 97%. |