Journal
ELECTROCHIMICA ACTA
Volume 52, Issue 4, Pages 1472-1476Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2006.01.078
Keywords
lithium iron phosphate; lithium-ion batteries; carbon coating; electrochemical properties; AC impedance
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Electrochemical properties of LiFePO4 were investigated by incorporating conductive carbon from three different carbon sources (graphite, carbon black, acetylene black). SEM observations revealed that the carbon-coated LiFePO4 were smaller than the bare LiFePO4 particles. The carbon-coated LiFePO4 showed much better performance in terms of the discharge capacity and cycling stability than the bare LiFePO4. Among carbon-coated LiFePO4, the particles coated with graphite exhibited better electrochemical properties than others coated with carbon black or acetylene black. (c) 2006 Elsevier Ltd. All rights reserved.
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