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http://dx.doi.org/10.4191/kcers.2011.48.6.531

Electrochemical Performances of LiMn2O4:Al Synthesized by Solid State Method  

Park, Hye-Jung (Korea Institute of Ceramic Engineering & Technology)
Park, Sun-Min (Korea Institute of Ceramic Engineering & Technology)
Roh, Gwang-Chul (Korea Institute of Ceramic Engineering & Technology)
Han, Cheong-Hwa (Department of Advanced Materials & Chemical Engineering, Halla University)
Publication Information
Journal of the Korean Ceramic Society / v.48, no.6, 2011 , pp. 531-536 More about this Journal
Abstract
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.
Keywords
Li-ion battery; $LiMn_2O_4$; Al doping; Capacity fading; Solid state method;
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Times Cited By KSCI : 1  (Citation Analysis)
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