Improvement of structural and electrochemical properties of AlF3-coated Li[Ni1/3Co1/3Mn1/3]O-2 cathode materials on high voltage region
- Authors
- Park, Byoung-Chul; Kim, Hyung-Bae.; Myung, Seung-Taek; Amine, Khalil; Belharouak, Ilias; Lee, Sung-Man; Sun, Yang Kook
- Issue Date
- Apr-2008
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- AlF3; coating; high voltage; cathode; lithium; battery
- Citation
- JOURNAL OF POWER SOURCES, v.178, no.2, pp.826 - 831
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 178
- Number
- 2
- Start Page
- 826
- End Page
- 831
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/178780
- DOI
- 10.1016/j.jpowsour.2007.08.034
- ISSN
- 0378-7753
- Abstract
- The particle surface of Li[Ni1/3Co1/3Mn1/3]O-2 was modified by AlF3 as a new coating material to improve the electrochemical properties in the high cutoff voltage of 4.5 V The AIF(3)-coated Li[Ni1/3Co1/3Mn1/3]O-2 showed no difference in the bulk structure compared with the pristine one and the uniform AIF(3) coating layers whose thickness is of about 10 nm covered Li[Ni1/3Co1/3Mn1/3]O-2 particles, as confirmed by a transmission electron microscopy. The AlF3 coating on Li[Ni1/3Co1/3Mn1/3]O-2 particles improved the overall electrochemical properties such as the cyclability, rate capability and thermal stability compared with those of the pristine Li[Ni1/3Co1/3Mn1/3]O-2. Such enhancements were attributed to the presence of the stable AIF3 layer which acts as the interfacial stabilizer on the surface of Li[Ni(1/)3Co(1/3)Mn(1/3)]O-2.
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