Preparation method of lithium iron phosphate and battery anode
A lithium iron phosphate, lithium source technology, applied in battery electrodes, chemical instruments and methods, circuits, etc., can solve the problems of cumbersome process, unsatisfactory conductivity, high cost, etc., and achieve simple process and high current charge and discharge performance. Excellent, low-cost effects
Inactive Publication Date: 2011-06-29
钟志源 +1
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The invention provides a method for preparing lithium iron phosphate, which comprises the following steps: (a) well mixing an aqueous solution of bivalent iron source compound, an aqueous solution of phosphorus source compound, and an aqueous solution of lithium source compound with a molar ratio of Fe, P and Li being 1:1:2-3 so as to obtain a well-mixed mixture; (b) adding a morphology control agent into the mixture, and adjusting the pH of the mixture to be 7-10; (c) adding the mixture into a reaction vessel, placing the reaction vessel under a temperature of 120-250 DEG C for reaction for 2-36 hours; (d) cooling to room temperature, filtering, washing, drying at a temperature of 30-120 DEG C so as to obtain lithium iron phosphate particles. The lithium iron phosphate prepared by the method of the invention has structured morphology, a narrow distribution range of particle sizes or even monodisperse particles, and excellent electrochemical properties with good charge-discharge performance for high current; and the preparation method has simple process, low cost, and facilitates the realization of industrialization.
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Property | Measurement | Unit |
Diameter | 100.0 ~ 200.0 | nm |
Length | 2.0 | µm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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