Continuous Composition Spread and Electrochemical Studies of Low Cobalt Content Li(Ni,Mn,Co)O-2 Cathode Materials
- Authors
- Jung, JongSeok; Yim, Haena; Parmar, Narendra Singh; Lee, Jae-Seung; Choi, Ji-Won
- Issue Date
- 6월-2019
- Publisher
- MDPI
- Keywords
- continuous composition spread; Li(Ni; Mn; Co)O-2 cathode; low cobalt content; thin film; X-ray near edge spectroscopy
- Citation
- COATINGS, v.9, no.6
- Indexed
- SCIE
SCOPUS
- Journal Title
- COATINGS
- Volume
- 9
- Number
- 6
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/65262
- DOI
- 10.3390/coatings9060366
- ISSN
- 2079-6412
- Abstract
- Many scientific efforts have been undertaken toward reducing the Co content in LiMn1/3Ni1/3Co1/3O2 cathode materials for thin-film batteries. In this study, we present cathodes with a wide range of Li(Ni, Mn, Co)O-2 compositions to determine the material with the best electrochemical performance by changing the ratio of Ni to Mn at a fixed 0.1 at.% of Co by the continuous composition spread sputtering method. The cathode composition measurements by Rutherford backscattering spectroscopy show that the best electrochemical performance is obtained for a composition of Ni:Mn:Co = 19:71:10. The reasons for this improved electrochemical performance are further investigated by X-ray diffraction, electrochemical impedance spectroscopy, Fourier-transform infrared spectroscopy, and X-ray absorption near edge spectroscopy.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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