| 학회 | 한국재료학회 |
| 학술대회 | 2003년 가을 (11/21 ~ 11/22, 연세대학교) |
| 권호 | 9권 2호 |
| 발표분야 | 세라믹스 |
| 제목 | 금속산화물 코팅을 통한 박막 LiCoO2 양극의 전기화학적 특성 향상 |
| 초록 | To improve the electrochemical properties of thin-film LiCoO2 cathodes, metal oxides were coated on the LiCoO2 thin films using rf sputtering. Galvanostatic charge-discharge experiments showed the enhanced cycling behaviors in the metal-oxide coated LiCoO2 thin films than the uncoated ones. These results are because the metal-oxide coating layer suppresses the degradation of Li-diffusion kinetics during cycling, which is related to the protection of cathode surface from the electrolytes [1-3]. The variation in the metal-oxide coating thickness ranging from 10 to 300 nm did not affect the electrochemical properties. Changes of lattice constants in the coated and bare LiCoO2 thin films at different charged states will also be discussed. [1] Y. J. Kim, H. Kim, B. Kim, D. Ahn, J.-G. Lee, T.-J. Kim, D. Son, J. Cho, Y.-W. Kim, and B. Park, Chem. Mater. 15, 1505 (2003). [2] J. Cho, Y.-W. Kim, B. Kim, J.-G. Lee, and B. Park, Angewandte Chemie Int. Ed. 42, 1618 (2003). [3] J.-G. Lee, B. Kim, J. Cho, Y.-W. Kim, and B. Park, J. Electrochem. Soc. (submitted). |
| 저자 | 김혜민1, 김병수1, 김용정1, 조재필2, 박병우1 |
| 소속 | 1서울대, 2금오공과대 |
| 키워드 | metal-oxide coating; LiCoO2 thin film; Li-diffusion kinetics |
