Particle Size Distribution and Synthesis of Lithium Iron Phosphate by Sol-Gel Method

Abstract Olivine-type lithium iron phosphate was synthesized by sol-gel method. The preparedLiFePO₄samples were characterized by XRD, SEM and laser particle size analyzer. The effect of the factors on particle size distribution, structure and morphology was investigated, and the suitable conditions were obtained as follow: pH of gelation preparation was 3.57, calcination temperature was 800 ℃, calcination heating rate was 7 ℃/min, the ratio of ［CA］/［Fe²⁺］ was 3.5∶1.0. The influence mechanism of different factors on particle size distribution of lithium iron phosphate was analyzed. Reaction process mechanism and calcination process mechanism were mainly explored.

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	WANG Bao-Wei
	YANG Mei-Lin
	CHOU Peng

Keywords： lithium iron phosphate sol-gel method particle size distribution reaction process and calcination process mechanism

Received 2012-06-12;

Corresponding Authors: 王保伟，电话：（022）27402944，E-mail: wangbw@tju.edu.cn。 Email: wangbw@tju.edu.cn

About author: 王保伟（1971-），男，副教授。

Cite this article:

WANG Bao-Wei, YANG Mei-Lin, CHOU Peng.Particle Size Distribution and Synthesis of Lithium Iron Phosphate by Sol-Gel Method[J] Chemcial Industry and Engineering, 2013,V30(5): 42-47