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

Title
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
Author
선양국
Keywords
SECONDARY BATTERIES; HIGH-ENERGY; IMPROVEMENT; COPRECIPITATION; PERFORMANCE; LI(NI1/3CO1/3MN1/3)O-2; MECHANISM; BEHAVIOR; CELLS
Issue Date
2010-12
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v. 157, no. 12, page. A1335-A1340
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. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3497304] All rights reserved.
URI
http://repository.hanyang.ac.kr/handle/20.500.11754/79296http://jes.ecsdl.org/content/157/12/A1335
ISSN
0013-4651
DOI
10.1149/1.3497304
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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