羟基磷酸铁铵的制备与表征

Abstract

Abstract:

Spheniscidite of high-purity was synthesized in the presence of urea by hydrothermal method using ferrous sulfate and phosphoric acid as raw materials.Spheniscidites with different crystallinity and morphology were obtained by changing the reaction temperature,and the ferric phosphate was ultimate product after the calcination.The composition,structure,crystal shape and morphology of the synthesized spheniscidites were systematically characterized and analyzed by XRD,SEM,TG-DTA and infrared analysis.The phase transition process of spheniscidite during heating was analyzed.The results showed that phosphoric acid and iron had a fixed stoichiometric ratio in the static spheniscidite,and iron phosphate was obtained with high purity when synthesized spheniscidite was calcinated at high temperature,which could be used as a precursor of cathode material for lithium ion batteries and the method had simple synthesis process and good industrial application potential.

Key words: iron phosphate, hydrothermal method, spheniscidient, urea, ferrous sulfate

CLC Number:

TQ126.35

Mao Qiqi,Liu Chuanxin,Dong Wenjuan,Zhang Ximan,Chen Hongyu,Wu Suwen. Preparation and characterization of spheniscidite[J]. Inorganic Chemicals Industry, 2019, 51(5): 53-56.

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Preparation and characterization of spheniscidite

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