Comparison of the structural and electrochemical properties of layered Li[NixCoyMnz]O-2 (x=1/3, 0.5, 0.6, 0.7, 0.8 and 0.85) cathode material for lithium-ion batteries

Title
Comparison of the structural and electrochemical properties of layered Li[NixCoyMnz]O-2 (x=1/3, 0.5, 0.6, 0.7, 0.8 and 0.85) cathode material for lithium-ion batteries
Other Titles
3, 0.5, 0.6, 0.7, 0.8 and 0.85) cathode material for lithium-ion batteries
Author
선양국
Keywords
Layered materials; Cathode materials; Coprecipitation; Lithium-ion batteries
Issue Date
2013-07
Publisher
Elsevier Science B.V., Amsterdam.
Citation
Journal of Power Sources, 2013, 233, P.121-130
Abstract
In this study we report the effects of the Ni content on the electrochemical properties and the structural and thermal stabilities of Li[NixCoyMnz]O2 (x = 1/3, 0.5, 0.6, 0.7, 0.8 and 0.85) synthesized via a coprecipitation method. The electrochemical and thermal properties of Li[NixCoyMnz]O2 are strongly dependent on its composition. An increase of the Ni content results in an increase of specific discharge capacity and total residual lithium content but the corresponding capacity retention and safety characteristics gradually decreased. The structural stability is related to the thermal and electrochemical stabilities, as confirmed by X-ray diffraction, thermal gravimetric analysis, and differential scanning calorimetry. Developing an ideal cathode material with both high capacity and safety will be a challenging task that requires precise control of microstructure and physico-chemical properties of the electrode.
URI
https://www.sciencedirect.com/science/article/pii/S0378775313001110?via%3Dihubhttp://hdl.handle.net/20.500.11754/52298
ISSN
0378-7753
DOI
10.1016/j.jpowsour.2013.01.063
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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