METHOD FOR PREPARING LITHIUM IRON PHOSPHATE MATERIAL COATED WITH CARBON NANORIBBON

摘要

The present application provides a method for preparing a lithium iron phosphate material coated with carbon nanoribbon, including the steps of: 1) fully and uniformly dispersing carbon nanoribbons in an aqueous solution by means of stirring and ultrasonic dispersion, and obtaining a mixture; 2) adding a lithium source, an iron source and a phosphorous source at a molar ratio of Li:Fe:P=1:1:1 into the mixture of step 1) under the protection of inert gas, adding water and stirring to form a slurry, and refluxing the slurry; 3) washing and drying the slurry to obtain a primary lithium iron phosphate material coated with carbon nanoribbon; and 4) annealing the primary lithium iron phosphate material coated with carbon nanoribbon of step 3) at high-temperature in a protective atmosphere of argon containing 5-10% v/v of hydrogen, and obtaining the lithium iron phosphate material coated with carbon nanoribbon.