Journal
MATERIALS RESEARCH BULLETIN
Volume 41, Issue 3, Pages 601-607Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2005.09.005
Keywords
inorganic compounds; x-ray diffraction; electrochemical properties
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LiCoASO(4) is synthesized by solid state reaction method and its crystal structure has been refined by the Rietveld method using powder X-ray diffraction data. LiCoAsO4 crystallizes in olivine structure with space group Pnma and orthorhombic lattice parameters are a = 10.4614(2) angstrom, b = 5.9970(1) angstrom and c = 4.8866(1) angstrom. Electrochemical studies reveal that in LiCoAsO4, lithium is deintercalated and intercalated at high voltage similar to 5.0 V. On the other hand, the compound can react with about 9Li on discharge to 0.05 V. A reversible capacity of similar to 100 mAh/g is obtained in the voltage range 1.0-2.5 V. (c) 2005 Elsevier Ltd. All rights reserved.
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