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AlF3 코팅을 통한 Spinel Li1.1Mn1.85Al0.05O4 양극 활물질의 전기화학적 특성 향상에 관한 연구

Title
AlF3 코팅을 통한 Spinel Li1.1Mn1.85Al0.05O4 양극 활물질의 전기화학적 특성 향상에 관한 연구
Other Titles
Improvements of electrochemical performance of spinel Li1.1Mn1.85Al0.05O4 cathode materials by AlF3 coating
Author
이동주
Alternative Author(s)
Dong-Ju Lee
Advisor(s)
선양국
Issue Date
2011-02
Publisher
한양대학교
Degree
Master
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 using 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 dissolution 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.
URI
https://repository.hanyang.ac.kr/handle/20.500.11754/139784http://hanyang.dcollection.net/common/orgView/200000415744
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > CHEMICAL ENGINEERING(화학공학과) > Theses (Master)
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