NDLI: Effects of Co$_{3}$(PO$_{4}$)$_{2}$ coatings on LiNi$_{0.8}$Co$_{0.16}$Al$_{0.04}$O$_{2}$ cathodes during application of high current

Content Provider	Springer Nature Link
Author	Ryu, Kwang Sun Lee, Sang Hyo Koo, Bon Keup Lee, Ju Wook Kim, Kwang Man Park, Yong Joon
Copyright Year	2008
Abstract	The electrochemical properties of bare and Co$_{3}$(PO$_{4}$)$_{2}$-coated LiNi$_{0.8}$Co$_{0.16}$Al$_{0.04}$O$_{2}$ electrodes after high current damage testing were characterized. Damage was induced by cycling with a high current density of 600 m Ag$^{−1}$. Co$_{3}$(PO$_{4}$)$_{2}$-coated LiNi$_{0.8}$Co$_{0.16}$Al$_{0.04}$O$_{2}$ electrodes exhibit lower capacity loss and better charge retention than bare LiNi$_{0.8}$Co$_{0.16}$Al$_{0.04}$O$_{2}$ electrodes after damage testing. The discharge capacity reduction of bare and Co$_{3}$(PO$_{4}$)$_{2}$-coated electrodes after damage testing were ∼27 and 15%, respectively. The impedance of cells containing bare electrodes remarkably increased after high current cycling, which may be induced by damage to the electrode surface. However, damage was successfully suppressed by the Co$_{3}$(PO$_{4}$)$_{2}$ coating. Bare LiNi$_{0.8}$Co$_{0.16}$Al$_{0.04}$O$_{2}$ electrodes developed large amounts of cracks and other extended defects after high current cycling. In contrast, Co$_{3}$(PO$_{4}$)$_{2}$-coated electrodes maintained stable features after high current cycling, indicating the coating layer effectively protected the surface of the LiNi$_{0.8}$Co$_{0.16}$Al$_{0.04}$O$_{2}$ powder.
Starting Page	1385
Ending Page	1390
Page Count	6
File Format	PDF
ISSN	0021891X
Journal	Journal of Applied Electrochemistry
Volume Number	38
Issue Number	10
e-ISSN	15728838
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-05-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chemical synthesis Electrochemical measurement Electrochemical properties Industrial Chemistry/Chemical Engineering Physical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Chemical Engineering Electrochemistry

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