| 고상법으로 합성한 LiMn2O4:Al의 전기화학적 특성 |
| 박혜정, 박선민, 노광철, 한정화1 |
한국세라믹기술원 그린세라믹본부
1한라대학교 신소재화학공학과 |
| Electrochemical Performances of LiMn2O4:Al Synthesized by Solid State Method |
| Hye-Jung Park, Sun-Min Park, Gwang-Chul Roh, Cheong-Hwa Han1 |
Korea Institute of Ceramic Engineering & Technology
1Department of Advanced Materials & Chemical Engineering, Halla University |
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| ABSTRACT |
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Al doped $LiMn_2O_4$ ($LiMn_2O_4:Al$) synthesized by several Al doping process and Solid State method. The Al contents in $Mn_{1-x}Al_xO_2$ for $LiMn_2O_4:Al$ were analyzed 1.7 wt% by EDS. The $LiMn_2O_4:Al$ confirmed cubic spinel structure and approximately 5 ${mu}m$ particles regardless of three kinds of doping process by solid state method. In the result of electrochemical performances, initial discharge capacity had 115 mAh/g in case of $LiMn_2O_4$ and 111 mAh/g of $LiMn_2O_4:Al$ after 100th cycle at room temperature. But the capacity retention results showed that $LiMn_2O_4$ and $LiMn_2O_4:Al$ were 44% and 69% respectively in the 100th cycle at 60$^{circ}C$. Therefore we are confirmed that $LiMn_2O_4:Al$ increased the capacity retention about 25% than $LiMn_2O_4$, thus the effect of Al dopping on $LiMn_2O_4$ capacity retention. |
| Key words:
Li-ion battery, $LiMn_2O_4$, Al doping, Capacity fading, Solid state method |
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