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http://dx.doi.org/10.4313/JKEM.2008.21.3.249

Ag Doping Effect on Li[Ni0.2Li0.2Mn0.6]O2 Cathode Material  

Ryu, Jea-Hyeok (경기대학교 신소재공학과)
Kim, Seuk-Buom (경기대학교 신소재공학과)
Park, Yong-Joon (경기대학교 신소재공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.21, no.3, 2008 , pp. 249-254 More about this Journal
Abstract
Ag doping effect on $Li[Ni_{0.2}Li_{0.2}Mn_{0.6}]O_2$ cathode material was studied. Specially, we focused on rate performance of Ag doped samples. The $Li[Ni_{0.2}Li_{0.2}Mn_{0.6}]O_2$ powder was prepared by simple combustion method and the Ag was doped using $AgNO_3$ during gelation process. Based on X-ray diffraction analysis, there was no structural change by Ag doping, but the 'metallic' form of Ag was included in the doped powder. Both bare and Ag 1 wt.% doped sample showed similar discharge capacity of 242 mAh/g at 0.2C rate. However, as the increase of charge-discharge rate to 3C, Ag 1 wt.% doped sample showed higher discharge capacity (172 mAh/g) and better cyclic performance than those of bare sample. The discharge capacity of Ag 5 wt.% doped sample was relatively low at all rate condition. However it displayed better rate performance than other samples.
Keywords
Cathode material; Lithium battery; Ag doping;
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Times Cited By KSCI : 1  (Citation Analysis)
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