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- Cho, Jaephil
- Nano Energy Storage Material Lab.
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Improved Rate Capability and Thermal Stability of LiNi0.5Co0.2Mn0.3O2 Cathode Materials via Nanoscale SiP2O7 Coating
- Author(s)
- Lee, Yong-Seok, Ahn, Docheon, Cho, Young-Hyun, Hong, Tae Eun, Cho, Jaephil
- Issued Date
- 2011-12
- 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.
- Publisher
- ELECTROCHEMICAL SOC INC
- ISSN
- 0013-4651
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