乳液法制备球形锰酸锂及其影响因素

Synthesis of Spherical LiMn_2O_4 by Emulsion Method and the Research of Impact Factors

文章介绍了目前锂离子电池正极材料球形化制备的情况,对乳液法二次造粒的方法及其机理进行了初步探讨。以微波合成法制备的LiMn_2O_4作为一次颗粒,采用一种特殊的乳液法二次造粒,初步制备了球形LiMn_2O_4正极材料。对二次造粒的产物进行了SEM、XRD分析,测试了其振实密度,发现在二次造粒过程中一次颗粒有一定生长,二次颗粒球状形貌还不够理想,分析了原因,为进一步研究打下基础。

The paper introduces research of spherical cathode material used in lithium-ion battery, elaborating a special emulsion method and its mechanism. The primary LiMn2O4 was synthesized by microwave synthesis method, and the secondary particle was prepared by the special emulsion method. The secondary particle was researched by SEM and XRD, and its tap density was tested. It was found that the primary LiMn2O4 grew right along during sintering, but the morphology was not ideally spherical. The result was analyzed for the further research.