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Improvement of electrochemical propertis of Li1.1Al0.05Mn1.85O4 achieved by an AlF3 coating
- Lee, Dong-Ju;
- Lee, Ki-Soo;
- Myung, Seung-Taek;
- Yashiro, Hitoshi;
- Sun, Yang Kook
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64초록
The electrochemical performance of AlF3-coated Li1.1Al0.05Mn1.85O4 spinel was investigated. The morphology of the AlF3-coated Li1.1Al0.05Mn1.85O4 was observed by SEM and TEM, and the thickness of the coating layer was approximately 10 nm. Capacity retention and rate capability were substantially improved by the AlF3-coating, as compared to pristine Li1.1Al0.05Mn1.85O4. Manganese dissoulution was also dramatically reduced for the AlF3-coated Li1.1Al0.05Mn1.85O4, which may reflect lower impedance for the coated spinel. The thermal stability of the AlF3-coated Li1.1Al0.05Mn1.85O4 was improved, exhibiting an exothermic reaction at higher temperature with reduced heat generation, compared to the pristine Li1.1Al0.05Mn1.85O4.
키워드
AlF3; Coating; Spinel; Cathode; Lithium; Battery; VOLTAGE CYCLING PERFORMANCE; SECONDARY LITHIUM BATTERIES; CATHODE MATERIALS; SPINEL; BEHAVIOR; OXIDES; TEMPERATURE; DISSOLUTION; ELECTRODES; LICOO2
- 제목
- Improvement of electrochemical propertis of Li1.1Al0.05Mn1.85O4 achieved by an AlF3 coating
- 저자
- Lee, Dong-Ju; Lee, Ki-Soo; Myung, Seung-Taek; Yashiro, Hitoshi; Sun, Yang Kook
- 발행일
- 2011-02
- 유형
- Article
- 권
- 196
- 호
- 3
- 페이지
- 1353 ~ 1357