METHOD OF PREPARING OLIVINE CATHOD MATERIAL FOR LITHIUM SECONDARY BATTERY
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United States of America Patent
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Feb 7, 2013
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Aug 12, 2010
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Abstract
The present invention relates to a method of preparing olivine cathode materials for lithium secondary battery. More specifically, a method of preparing an olivine-based cathode material for secondary battery comprising the steps of: dissolving an iron supplying material, and a lithium phosphate by adding an acid; forming a chelate polymer by adding a chelate agent and a polymerization agent in the solution of the dissolving step followed by heating; pyrolyzing the chelate polymer under reducing atmosphere; and thermally reducing the chelated polymer degraded during the pyrolysis is provided.
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