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Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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Improved Rate Capability and Thermal Stability of LiNi0.5Co0.2Mn0.3O2 Cathode Materials via Nanoscale SiP2O7 Coating

Cited 12 times inthomson ciCited 9 times inthomson ci
Title
Improved Rate Capability and Thermal Stability of LiNi0.5Co0.2Mn0.3O2 Cathode Materials via Nanoscale SiP2O7 Coating
Author
Lee, Yong-SeokAhn, DocheonCho, Young-HyunHong, Tae EunCho, Jaephil
Keywords
Cathode materials; Coated cathodes; Cut-off; Evolution of oxygen; Nano scale; Rate capabilities; Si ions
Issue Date
2011
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.158, no.12, pp.A1354 - A1360
Abstract
Li delta PyOz-coated LiNi0.5Co0.2Mn0.3O2 cathode materials doped with P and Si ions were prepared by direction reaction of LiOH and SiP2O7-coated Ni0.5Co0.2Mn0.3(OH)(2) precursors. The coated cathodes exhibited quite impressive results; rate capability was improved by almost 100% at a 7 C rate compared to pristine LiNi0.5Co0.2Mn0.3O2. Furthermore, the amount of heat generation at 4.5 V charge cut-off as a result of the evolution of oxygen was reduced by 79%, compared to pristine LiNi0.5Co0.2Mn0.3O2 sample.
URI
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DOI
http://dx.doi.org/10.1149/2.051112jes
ISSN
0013-4651
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ECHE_Journal Papers

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