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Author

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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Improvement of 12 V overcharge behavior of LiCoO2 cathode material by LiNi0.8Co0.1Mn0.1O2 addition in a Li-ion cell

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Title
Improvement of 12 V overcharge behavior of LiCoO2 cathode material by LiNi0.8Co0.1Mn0.1O2 addition in a Li-ion cell
Author
Kim, JisukNoh, MijungCho, Jaephil
Keywords
12 V overcharge; LiCoO2; LiNi0.8Co 0.1Mn0.1O2; Thermal runaway
Issue Date
200602
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.153, no.2, pp.345 - 349
Abstract
The 12 V overcharge instability of the LiCoO2 cathode material was improved by the physical blending it with LiNi0.8Co 0.1Mn0.1O2. Even though a Li-ion cell containing a LiCoO2 cathode did not exhibit thermal runaway at 12 V at the 1 C overcharging rate, it showed thermal runaway at the 2 C overcharging rate, and the cell surface temperature reached more than 400 °C. However, the LiCoO2 cell containing 40, 50, and 60 wt.% LiNi 0.8Co0.1Mn0.1O2 did not exhibit thermal runaway at the 2 C overcharging rate. In conclusion, 60 wt.% LiNi 0.8Co0.1Mn0.1O2 in the LiCoO 2 cathode showed the lowest cell surface temperature of <90 °C even at a 3 C overcharging rate.
URI
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DOI
http://dx.doi.org/10.1016/j.jpowsour.2005.05.035
ISSN
0378-7753
Appears in Collections:
ECHE_Journal Papers

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