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http://dx.doi.org/10.4313/JKEM.2009.22.10.890

The Effects of Li-La-Ti-O Coating on the Properties of Li[Ni0.3Co0.4Mn0.3]O2 Cathode Material  

Lee, Hye-Jin (경기대학교 첨단산업공학부 신소재공학)
Yun, Su-Hyun (경기대학교 첨단산업공학부 신소재공학)
Park, Bo-Gun (경기대학교 첨단산업공학부 신소재공학)
Ryu, Jea-Hyeok (경기대학교 첨단산업공학부 신소재공학)
Kim, Kwan-Su (경기대학교 첨단산업공학부 신소재공학)
Kim, Seuk-Buom (경기대학교 첨단산업공학부 신소재공학)
Park, Yong-Joon (경기대학교 첨단산업공학부 신소재공학)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.22, no.10, 2009 , pp. 890-896 More about this Journal
Abstract
Li(Ni, Co, Mn)$O_2$ has been known as one of the most promising cathode materials for lithium secondary batteries. However, it has some problems to overcome for commercialization such as inferior rate capability and unstable thermal stability. In order to address these problems, surface modification of cathode materials by coating has been investigated. In the coating techniques, selection of coating material is a key factor of obtaining enhanced properties of cathode materials. In this work, we introduced solid electrolyte (Li-La-Ti-O) as a coating material on the surface of $Li[Ni_{0.3}Co_{0.4}Mn_{0.3}]O_2$ cathode. Specially, we focused on a rate performance of Li-La-Ti-O coated $Li[Ni_{0.3}Co_{0.4}Mn_{0.3}]O_2$ cathode. Both bare and Li-La-Ti-O 2 wt.% coated sample showed similar discharge capacity at 0.5C rate. However, as the increase of charge-discharge rate to 3C, the coated samples displayed better discharge capacity and cyclic performance than those of bare sample.
Keywords
Cathode material; Lithium battery; Surface coating; Rate capability;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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