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The studies of structural stability of LiNi0.5Mn1.5O4 spinel
- Authors
- Park, Sung-Bin; Kim, Yool-Koo; Lee, Wan-Gyu; Cho, Won-Il; Jang, Ho
- Issue Date
- 3월-2008
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- capacity fading; TEM; LiNi0.5Mn1.5O4; lithium batteries
- Citation
- JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS, v.46, no.3, pp.174 - 181
- Indexed
- SCIE
SCOPUS
KCI
- Volume
- 46
- Number
- 3
- Start Page
- 174
- End Page
- 181
- ISSN
- 1738-8228
- 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.
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