Park, Sung-Bin Kim, Yool-Koo Lee, Wan-Gyu Cho, Won-Il Jang, Ho 2024-01-20T23:34:54Z 2024-01-20T23:34:54Z 2021-09-03 2008-03 1738-8228 https://pubs.kist.re.kr/handle/201004/133714 The present paper focuses on the structural stability of LiNi0.5Mn1.5O4 during lithiation/delithiation of Li ions and compared to that of LiMn2O4 LiMn2O4 and LiNi0.5Mn1.5O4 powders are synthesized using a sol-gel method and their structural and electrochemical properties are investigated by XRD, SEM, and charge-discharge tests. LixMn2O4 and LixNi0.5Mn1.5O4(X = 0.9,0.5,0.1) specimens are obtained after charge/discharge tests by controlling the cut-off voltage for XRD and TEM investigation. The charge-discharge tests shows that initial capacity of LiNi0.5Mn1.5O4 is 125 mAh/g and that of LiMn2O4 is around 100 mAh/g. The capacity of LiNi0.5Mn1.5O4 is maintained 95% of its initial capacity whereas the capacity of LiMn2O4 is maintained 65% of its initial capacity. Korean KOREAN INST METALS MATERIALS LITHIUM-ION BATTERIES INTERCALATION CATHODES LIMN2O4 SYSTEM PHASE The studies of structural stability of LiNi0.5Mn1.5O4 spinel Article 1 JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS, v.46, no.3, pp.174 - 181 JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS 46 3 174 181 scie scopus kci 000255109200010 2-s2.0-43149099879 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article LITHIUM-ION BATTERIES INTERCALATION CATHODES LIMN2O4 SYSTEM PHASE capacity fading TEM LiNi0.5Mn1.5O4 lithium batteries