Journal
ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume 3, Issue 4, Pages 178-179Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1390994
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Reversible extraction and insertion of lithium from and into olivine LiCoPO4 at 4.8 V vs. lithium have shown that this material is a good candidate for a high-voltage lithium-ion battery. Electrochemical extraction was limited to 0.42 lithium per formula unit, with a charge capacity of 86 mAh/g and a discharge capacity of 70 mAh/g. In this case, the material retains its structural integrity with a slight contraction of the unit cell upon cycling. The crystallinity of the electrode during charge and discharge processes was not affected, as deduced from the sharpness of the X-ray diffraction peaks of the cycled cathode material. (C) 2000 The Electrochemical Society. S1099-0062(99)11-055-1. All rights reserved.
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