Morphology controlled synthesis and modification of highperformance LiMnPO4 cathode materials for Li-ion batteries

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 宁波所知识产出

	Morphology controlled synthesis and modification of highperformance LiMnPO4 cathode materials for Li-ion batteries
	周旭峰、刘兆平 ; Zhihong Qin, Xufeng Zhou,* Yonggao Xia, Changlin Tang and Zhaoping Liu*
刊名	J. Mater. Chem.
	2012-08-20
卷号	29 期号:39 页码:21144—21153
通讯作者	周旭峰、刘兆平
合作状况	李雨桐
中文摘要	Morphology-controlled monodispersed LiMnPO4 nanocrystals as high-performance cathode materials for Li-ion batteries have been successfully synthesized by a solvothermal method in a mixed solvent of water and polyethylene glycol (PEG). Morphology evolution of LiMnPO4 nanoparticles from a nanorod to a thick nanoplate ( 50 nm in thickness) and to a smaller thin nanoplate (20–30 nm in thickness) is observed by increasing the pH value of the reaction suspension. Electrochemical measurements confirm that the LiMnPO4 thin nanoplates display the best charge–discharge performance, thick nanoplates the intermediate, nanorods the worst, which can be mainly ascribed to the difference in their morphologies and particle sizes in three dimensions. Further modification of LiMnPO4 thin nanoplates with graphene gives rise to an improved electrochemical performance compared with conventional pyrolytic carbon coated ones. The LiMnPO4 thin nanoplate/graphene composites deliver a high capacity of 149 mA h g 1 at 0.1 C, 90 mA h g 1 at 1 C, and even 64 mA h g 1 at 5 C charge–discharge rate, with an excellent cycling stability.
学科主题	物理化学
原文出处	其他国内刊物
公开日期	2013-12-16
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/9684]
专题	宁波材料技术与工程研究所_宁波所知识产出
推荐引用方式 GB/T 7714	周旭峰、刘兆平,Zhihong Qin, Xufeng Zhou,* Yonggao Xia, Changlin Tang and Zhaoping Liu*. Morphology controlled synthesis and modification of highperformance LiMnPO4 cathode materials for Li-ion batteries[J]. J. Mater. Chem.,2012,29(39):21144—21153.
APA	周旭峰、刘兆平,&Zhihong Qin, Xufeng Zhou,* Yonggao Xia, Changlin Tang and Zhaoping Liu*.(2012).Morphology controlled synthesis and modification of highperformance LiMnPO4 cathode materials for Li-ion batteries.J. Mater. Chem.,29(39),21144—21153.
MLA	周旭峰、刘兆平,et al."Morphology controlled synthesis and modification of highperformance LiMnPO4 cathode materials for Li-ion batteries".J. Mater. Chem. 29.39(2012):21144—21153.