Effect of Manganese Content on the Electrochemical and Thermal Stabilities of Li[Ni0.58Co0.28-xMn0.14+x]O-2 Cathode Materials for Lithium-Ion Batteries
- Authors
- Sun, Yang-Kook; Kang, Han-Byeol; Myung, Seung-Taek; Prakash, Jai
- Issue Date
- Dec-2010
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.157, no.12, pp A1335 - A1340
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 157
- Number
- 12
- Start Page
- A1335
- End Page
- A1340
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/193945
- DOI
- 10.1149/1.3497304
- ISSN
- 0013-4651
1945-7111
- Abstract
- The electrochemical and thermal stabilities of Li[Ni0.58Co0.28-xMn0.14+x]O-2 (x = 0-0.14) materials as cathodes for lithium secondary batteries were investigated. Increasing Mn content compared to Co in Li[Ni0.58Co0.28-xMn0.14+x]O-2 resulted in elongations of the a and c axes due to an increase in the Ni2+/Ni3+ ratio. The X-ray absorption near edge spectra of Li[Ni0.58Co0.28-xMn0.14+x]O-2 (x = 0-0.14) confirmed that the oxidation state of Ni changed from 3+ to 2+ with increasing Mn content. Variation in Mn content (0.14-0.28) did not affect the discharge capacity but increased the cycling and thermal stabilities. The electrochemical and thermal properties of the Li[Ni0.58Co0.14Mn0.28]O-2 cathode material were superior to those of Li[Ni0.58Co0.21Mn0.21]O-2 and Li[Ni0.58Co0.28Mn0.14]O-2.
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