The studies of structural stability of LiNi0.5Mn1.5O4 spinel

Authors
Park, Sung-BinKim, Yool-KooLee, Wan-GyuCho, Won-IlJang, Ho
Issue Date
2008-03
Publisher
KOREAN INST METALS MATERIALS
Citation
JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS, v.46, no.3, pp.174 - 181
Abstract
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.
Keywords
LITHIUM-ION BATTERIES; INTERCALATION CATHODES; LIMN2O4; SYSTEM; PHASE; LITHIUM-ION BATTERIES; INTERCALATION CATHODES; LIMN2O4; SYSTEM; PHASE; capacity fading; TEM; LiNi0.5Mn1.5O4; lithium batteries
ISSN
1738-8228
URI
https://pubs.kist.re.kr/handle/201004/133714
Appears in Collections:
KIST Article > 2008
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