Improvement of long-term cycling performance of Li[Ni0.8Co0.15Al0.05]O-2 by AlF3 coating
- Authors
- Lee, Sang-Hyuk; Yoon, Chong Seung; Amine, Khalil; Sun, Yang Kook
- Issue Date
- Jul-2013
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Layered materials; Cathode materials; Dry coating; Lithium-ion batteries
- Citation
- JOURNAL OF POWER SOURCES, v.234, pp.201 - 207
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 234
- Start Page
- 201
- End Page
- 207
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/26693
- DOI
- 10.1016/j.jpowsour.2013.01.045
- ISSN
- 0378-7753
- Abstract
- The surface of a Li[Ni0.8Co0.15Al0.05]O-2 cathode material was coated by a 50-nm thick AlF3 layer using a simple dry coating process. Although the initial discharge capacity of pristine and AlF3-coated Li [Ni0.8Co0.15Al0.05]O-2 was nearly same, the AlF3-coating significantly improved the electrochemical performances of [Ni0.8Co0.15Al0.05]O-2 in a full cell configuration (graphite anode), especially at an elevated temperature (55 degrees C). Furthermore, the AlF3-coated [Ni0.8Co0.15Al0.05]O-2 had better thermal stability than the pristine electrode. The improved electrochemical performance likely arose from the AlF3 coating layer which may have retarded the transition metal dissolution from HF attack. Electrochemical impedance spectroscopy and transmission electron microscopy provided direct evidence that the AlF3 coating layer suppressed the increase in charge transfer resistance and cathode material pulverization during cycling.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 에너지공학과 > 1. Journal Articles
- 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/26693)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.