Improvement of electrochemical propertis of Li1.1Al0.05Mn1.85O4 achieved by an AlF3 coating
- Authors
- Lee, Dong-Ju; Lee, Ki-Soo; Myung, Seung-Taek; Yashiro, Hitoshi; Sun, Yang Kook
- Issue Date
- Feb-2011
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- AlF3; Coating; Spinel; Cathode; Lithium; Battery
- Citation
- JOURNAL OF POWER SOURCES, v.196, no.3, pp.1353 - 1357
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 196
- Number
- 3
- Start Page
- 1353
- End Page
- 1357
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/28181
- DOI
- 10.1016/j.jpowsour.2010.09.040
- ISSN
- 0378-7753
- Abstract
- 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.
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