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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2009.1
- 수록면
- 890 - 896 (7page)
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초록· 키워드
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Li(Ni, Co, Mn)O2 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[Ni0.3Co0.4Mn0.3]O2 cathode. Specially, we focused on a rate performance of Li-La-Ti-O coated Li[Ni0.3Co0.4Mn0.3]O2 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.
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참고문헌 (15)
참고문헌 신청
A. D. Robertson / 2003 / Mechanism of electrochemical activity in Li2MnO3 / Chem. Mater. 15 : 1984 ~
B. L. Cushing / 2002 / Influence of carbon coating on the performance of a LiMn0.5Ni0.5O2 cathode / Solid State Sciences 4 : 1487 ~
C. Li / 2006 / Cathode materials modified by surface coating for lithium ion batteries / Electrochimica Acta 51 : 3872 ~
G. T. K. Feya / 2005 / TiO2 coating for long-cycling LiCoO2:A comparison of coating procedures / Surface & Coatings Technology 199 : 22 ~
H. B. Kim / 2008 / Electrochemical and thermal characterization of AlF3-coated Li[Ni0.8Co0.15Al0.55]O2 cathode in lithium-ion cells / J. Power Sources 179 : 347 ~
B. L. Cushing / 2002 / Influence of carbon coating on the performance of a LiMn0.5Ni0.5O2 cathode / Solid State Sciences 4 : 1487 ~
C. Li / 2006 / Cathode materials modified by surface coating for lithium ion batteries / Electrochimica Acta 51 : 3872 ~
G. T. K. Feya / 2005 / TiO2 coating for long-cycling LiCoO2:A comparison of coating procedures / Surface & Coatings Technology 199 : 22 ~
H. B. Kim / 2008 / Electrochemical and thermal characterization of AlF3-coated Li[Ni0.8Co0.15Al0.55]O2 cathode in lithium-ion cells / J. Power Sources 179 : 347 ~
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