Lee, SW Kim, KS Lee, KL Moon, HS Kim, HJ Cho, BW Cho, WI Park, JW 2024-01-21T07:05:57Z 2024-01-21T07:05:57Z 2021-09-02 2004-05-03 0378-7753 https://pubs.kist.re.kr/handle/201004/137588 Metal oxide-coated spinel was investigated with respect to electrochemical characteristics. Metal oxide coating on commercial spinel powder (LiMn2-xMxO4, M = Zr, Nikki, Japan) was carried out using the sol-gel method. Al2O3/CuOx-coated spinet exhibited stable cycle performance in the range from 3.0 to 4.4 V, and it had lower charge transfer resistance and higher double layer capacitance than bare spinel in later cycles. In the SEM image of the powder after the cell test, bare spinel showed abnormal surfaces formed by decomposition of the electrolyte, while Al2O3/CuOx-coated spinel displayed a normal surface covered with a surface film. Therefore, it is expected that an Al2O3/CuOx layer coated on the spinet powder can function as a protective film, which supresses the reaction between electrolyte and active material. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV CATHODE PERFORMANCE BATTERIES AL2O3 CELL CO CR Electrochemical characteristics of metal oxide-coated lithium manganese oxide (spinel type) Part II. In the range of 3.0-4.4 V Article 10.1016/j.jpowsour.2003.11.060 1 JOURNAL OF POWER SOURCES, v.130, no.1-2, pp.233 - 240 JOURNAL OF POWER SOURCES 130 1-2 233 240 scie scopus 000221005800030 2-s2.0-1842421813 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article CATHODE PERFORMANCE BATTERIES AL2O3 CELL CO CR li-ion battery lithium manganese oxide spinel aluminum oxide metal oxide coating surface treatment