硅酸盐学报2017，Vol.45Issue(10)：1432-1438,7.DOI:10.14062/j.issn.0454-5648.2017.10.07
模板法制备三维多孔LiMnPO4正极材料及电化学性能
Preparation by Templating Method and Electrochemical Characteristics of Three-dimensional Multiporous LiMnPO4 as Cathode Material
摘要
Abstract
Three-dimensional multiporous (3DOM) LiMnPO4 as a cathode material for lithium ion battery was synthesized with polymethyl methacrylate (PMMA) microspheres as templates prepared by a monodisperse polymerization method. Based on the results by X-ray diffraction, the 3DOM LiMnPO4 appears a olivine structure. By N2 adsorption-desorption analysis, the 3DOM LiMnPO4 has a greater specific surface area of 34.63 m2/g. The electrochemical characteristics analysis shows that the material has a stable charge-discharge platform, but it has the 1st cycle capacity of 120 mAh/g and the better stability after 60 charge-discharge cycles. The multiporous structure of LiMnPO4 favors the reduction of ion or charge transfer resistances in electrolyte or on the electrode surface, thus decreasing the polarization of the electrode surface, being benefit to Li+ extraction and insertion, and improving the stability of charge-discharge cycles.关键词
三维多孔结构/磷酸锰锂/模板法/锂离子电池/电化学性能Key words
three-dimensional multiporous/lithium manganese phosphate/templating method/lithium ion battery/electrochemical property分类
化学化工引用本文复制引用
华丽,喻鑫..模板法制备三维多孔LiMnPO4正极材料及电化学性能[J].硅酸盐学报,2017,45(10):1432-1438,7.基金项目
国家自然科学基金(51171068) （51171068）
湖北省教育厅高等学校优秀中青年科技创新团队建设计划项目(T201225) （T201225）
湖北省教育厅教学研究项目(No. 2014395) （No. 2014395）
湖北省重点实验室建设计划项目. （）
