Chang, Wonyoung Choi, Jung-Woo Im, Jong-Choo Lee, Joong Kee 2024-01-20T20:02:16Z 2024-01-20T20:02:16Z 2021-09-05 2010-01-01 0378-7753 https://pubs.kist.re.kr/handle/201004/131790 ZnO-coated LiCoO2 particles are prepared by plasma-enhanced chemical vapour deposition (PE-CVD) in a coating range from 0.08 to 0.49 wt.%, and examined using field emission-scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and atomic absorption spectroscopy (AAS), with particular focus on surface characteristics. From charge-discharge cycling tests in the range of 3.0-4.5 V, the ZnO coating has little effect on the discharge capacity in the first few cycles, but the coating effectively improves the capacity retention after prolonged cycling. In the experimental range studied, the optimum amount of ZnO coating which maximizes the capacity retention is found to be 0.21 wt.%. An excessive amount of ZnO coating causes a decrease in both cyclic performance and thermal stability. The possible reasons for enhanced cycleability and thermal stability afforded by the ZnO coating are discussed from the viewpoint of the surface morphology of the bare and coated LiCoO2 particles and their impedance spectra. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved. English ELSEVIER INTERCALATION LIXCOO2 Effects of ZnO coating on electrochemical performance and thermal stability of LiCoO2 as cathode material for lithium-ion batteries Article 10.1016/j.jpowsour.2009.06.104 1 JOURNAL OF POWER SOURCES, v.195, no.1, pp.320 - 326 JOURNAL OF POWER SOURCES 195 1 320 326 scie scopus 000272883200046 2-s2.0-69349085310 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article INTERCALATION LIXCOO2 Lithium-ion batteries Cathode materials Zinc oxide coating Plasma-enhanced chemical vapour deposition Capacity retention Thermal stability