化工学报 ›› 2014, Vol. 65 ›› Issue (3): 1099-1103.DOI: 10.3969/j.issn.0438-1157.2014.03.046

• 材料化学工程与纳米技术 • 上一篇    下一篇

紊流循环法合成超细磷酸锂及表征

胡意1, 艾常春2, 刘洋1, 吴元欣1,3   

  1. 1 武汉工程大学化工与制药学院, 湖北 武汉 430073;
    2 武汉工程大学国家磷资源开发利用工程技术研究中心, 湖北 武汉 430073;
    3 绿色化工过程省部共建教育部重点实验室, 湖北 武汉 430073
  • 收稿日期:2013-07-08 修回日期:2013-10-28 出版日期:2014-03-05 发布日期:2014-03-05
  • 通讯作者: 艾常春
  • 作者简介:胡意(1987—),男,硕士研究生。
  • 基金资助:

    国家磷资源开发利用工程技术研究中心开放基金项目(2012-Z001)。

Turbulent flow cycle synthesis and characterization of super-fine lithium phosphate

HU Yi1, AI Changchun2, LIU Yang1, WU Yuanxin1,3   

  1. 1 School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, Hubei, China;
    2 National Engineering Research Center for Development and Utilization of Phosphorus Resources, Wuhan Institute of Technology, Wuhan 430073, Hubei, China;
    3 Key Laboratory of Novel Chemical Process of Ministry of Education, Wuhan 430073, Hubei, China
  • Received:2013-07-08 Revised:2013-10-28 Online:2014-03-05 Published:2014-03-05
  • Supported by:

    supported by the National Engineering Research Center for Development and Utilization of Phosphorus Resources (2012-Z001).

摘要: 采用共沉淀法在紊流循环方式下制备超细磷酸锂的一种新工艺,探索了氢氧化锂和磷酸在紊流循环釜中制备超细磷酸锂的反应条件,用X射线粉末衍射、激光粒度仪、扫描电镜、比表面及孔隙分析仪及热分析仪对产物的晶体结构、粒度分布、外观形貌、比表面积以及热稳定性进行了表征。结果表明该方法制得的磷酸锂热稳定性好,粒度分布窄(D50=3.25 mm),比表面积(BET)为13.38 m2·g-1,为一种分散均匀的超细粉体材料,可望成为一种高活性的锂离子电池正极材料原材料或电解质添加剂。

关键词: 超细, 磷酸锂, 紊流循环, 表征

Abstract: A new technology is proposed for the preparation of lithium phosphate by the co-precipitation method in a turbulent flow cycle equipment. The reaction conditions of lithium hydroxide and phosphoric acid in turbulent flow circulation kettle for the preparation of super-fine lithium phosphate were investigated. X-Ray powder diffraction (XRD), laser granularity instrument, scanning electron microscopy (SEM), specific surface and porosity analyzer and thermal analyzer were used to characterize the crystal structure, particle size distribution, morphology, specific surface area and thermal stability of the products. The lithium phosphate prepared by this method had good thermal stability, a narrow particle size distribution of D50=3.25 mm, and a specific BET surface of 13.38 m2·g-1. As a uniformly dispersed super-fine powder material, the lithium phosphate is expected to be a highly active raw material of cathode materials for lithium ion battery or an additive for lithium ion battery electrolyte.

Key words: super-fine, lithium phosphate, turbulent flow cycle, characterization

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