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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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Washing effect of a LiNi0.83Co0.15Al0.02O2 cathode in water

Cited 29 times inthomson ciCited 23 times inthomson ci
Title
Washing effect of a LiNi0.83Co0.15Al0.02O2 cathode in water
Author
Kim, JisukHong, YoungsikRyu, Kwang SunKim, Min GyuCho, Jaephil
Keywords
Absorption; Atmospheric humidity; Cobalt; Degradation; Elementary particles; Impurities; Lithium batteries; Moisture; Swelling
Issue Date
2006
Publisher
ELECTROCHEMICAL SOC INC
Citation
ELECTROCHEMICAL AND SOLID STATE LETTERS, v.9, no.1, pp.A19 - A23
Abstract
The formation of LiOH and Li2CO3 impurities on high Ni content LiNi0.83Co0.15Al0.02O2 powders due to H2O and CO2 absorption from the air can be reduced without structural degradation by washing in water. Although the as-synthesized sample had a moisture content of 570 ppm immediately after firing, this level increased rapidly to 1270 ppm in air with a relative humidity of 50%. However, its content was decreased to 210 ppm after washing twice in water, followed by heat-treatment at 700°C. It is believed that this improvement was due to the decreased level of Li2CO3 and LiOH impurities on the particles. This was highlighted by the decreasing swelling of the Li-ion cell at 90°C, and the thickness of the cell containing the washed samples was decreased by 50% compared with the bare sample.
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DOI
http://dx.doi.org/10.1149/1.2135427
ISSN
1099-0062
Appears in Collections:
ECHE_Journal Papers

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