Synthesis of spherical LiMnPO4/C composite microparticles

被引：12

作者：

Bakenoy, Zhumabay ^{[1
]}

Taniguchi, Izumi ^{[1
]}

机构：

[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Chem Engn, Meguro Ku, Tokyo 1528552, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 08期

关键词：

Composite; Chemical synthesis; X-ray diffraction; Electrochemical properties; Energy storage; SPRAY-PYROLYSIS; LITHIUM BATTERIES; COMBINATION; PERFORMANCE; CATHODE;

D O I：

10.1016/j.materresbull.2011.03.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spherical LiMnPO4/C composite microparticles were prepared by a combination of spray pyrolysis and spray drying followed by heat treatment and examined as a cathode material for lithium batteries. The structure, morphology and electrochemical performance of the resulting spherical LiMnPO4/C microparticles were characterized by X-ray diffraction, field-emission scanning electron microscopy. transmission electronic microscopy and standard electrochemical techniques. The final sample was identified as a single phase orthorhombic structure of LiMnPO4 and spherical powders with a geometric mean diameter of 3.65 mu m and a geometric standard deviation of 1.34. The electrochemical cells contained the spherical LiMnPO4/C microparticles exhibited first discharge capacities of 112 and 130 mAh g(-1) at 0.05 degrees C at room temperature and 55 degrees C, respectively. These also showed a good rate capability up to 5 C at room temperature and 55 degrees C. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1311 / 1314

页数：4

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