Jung, JongSeok Yim, Haena Parmar, Narendra Singh Lee, Jae-Seung Choi, Ji-Won 2024-01-19T20:01:48Z 2024-01-19T20:01:48Z 2021-09-02 2019-06 2079-6412 https://pubs.kist.re.kr/handle/201004/119945 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. English MDPI LITHIUM-ION BATTERIES THIN-FILM POSITIVE ELECTRODES THERMAL-STABILITY PERFORMANCE INTERCALATION CHALLENGES Continuous Composition Spread and Electrochemical Studies of Low Cobalt Content Li(Ni,Mn,Co)O-2 Cathode Materials Article 10.3390/coatings9060366 1 COATINGS, v.9, no.6 COATINGS 9 6 scie scopus 000473753000021 Materials Science, Multidisciplinary Materials Science, Coatings & Films Physics, Applied Materials Science Physics Article LITHIUM-ION BATTERIES THIN-FILM POSITIVE ELECTRODES THERMAL-STABILITY PERFORMANCE INTERCALATION CHALLENGES continuous composition spread Li(Ni Mn Co)O-2 cathode low cobalt content thin film X-ray near edge spectroscopy