CARBON-COATED COMPOSITE MATERIAL, MANUFACTURING METHOD THEREOF, POSITIVE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

摘要

A carbon-coated composite is provided to obtain nano-sized active material particles having improved electroconductivity and ion conductivity and imparting excellent high-rate discharge characteristics and near-theoretical capacity to a lithium secondary battery. A carbon-coated LixA1-xFeyB1-y(PO4)zC1-z composite is obtained by subjecting LixA1-xFeyB1-y(PO4)zC1-z particles to carbon coating by using a carbon precursor having both hydrophobicity and hydrophilicity, wherein 0