Journal
ELECTROCHIMICA ACTA
Volume 48, Issue 19, Pages 2807-2811Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0013-4686(03)00415-8
Keywords
coating thickness; overcharge; thermal stability; LiCoO2
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The thickness of an AlPO4 coating significantly affects the thermal stability of a LiCOO2 cathode. Increasing the coating thickness leads to not only a decrease in the exothermic reaction between the cathode and the electrolyte but also to an improvement in the cycling performance. A 1 C rate overcharge experiment up to 12 V is a good example of the thermal stability of the cathode in the Li-ion cell. Further-more, increasing the AIPO(4) Coating thickness results in the lowest cell surface temperature, which is indicative of the degree of heat generation. (C) 2003 Elsevier Ltd. All rights reserved.
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