锂离子正极材料LiCo1-xMgxMnO4与LiCo1-xAlxMnO4 (x = 0, 0.02, 0.05, 0.1)的制备及其电化学性能

CORC > 厦门大学 > 2014年第20卷

	锂离子正极材料LiCo1-xMgxMnO4与LiCo1-xAlxMnO4 (x = 0, 0.02, 0.05, 0.1)的制备及其电化学性能; Synthesis and Electrochemical Properties of LiCo1-xMgxMnO4 and LiCo1-xAlxMnO4 (x= 0, 0.02, 0.05, 0.1) as Positive Materials for Lithium-ion Batteries
	游美玲 ; 童庆松 ; 李秀华 ; 林忞 ; 黄行康 ; 杨勇 ; YOU Mei-ling ; TONG Qing-song ; LI Xiu-hua ; LIN Min ; HUANG Xing-kang ; YANG Yong
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract10034.shtml
	2014-02-25
关键词	固相合成尖晶石LiCoMnO4 镁掺杂铝掺杂锂离子电池正极材料 solid state reaction spinel LiCoMnO4 Mg-doped Al-doped lithium-ion battery cathode material
英文摘要	采用固相法合成掺杂镁和铝尖晶石LiCoMnO4材料，研究镁和铝掺杂量对尖晶石LiCoMnO4电极的初始容量、放电平台以及循环性能的影响. 利用扫描电子显微镜、粉末X-射线衍射仪观察分析材料形貌及结构. 结果表明，所合成材料的粒径分布均匀，结晶性较佳. LiCoMnO4电极初始容量为87.0 mAh.g-1，少量镁或铝掺杂使电极初始容量有所增加，LiCo0.98Mg0.02MnO4和LiCo0.98Al0.02MnO4电极初始容量分别为91.3和93.6 mAh.g-1，提高了其5 V放电平台的比例，过量掺杂则其容量降低. 此外，掺杂Al显著改善了LiCoMnO4电极的循环性能，而掺杂镁对电极的循环性能其影响不明显.; The Al-doped and Mg-doped LiCoMnO4 materials were synthesized through solid-state reaction. The effects of doping amounts of Mg and Al on the initial capacities, discharge plateaus, and cycle performances were investigated. The morphologies and structures of the as-prepared materials were studied by scanning electron microscopy and powder X-ray diffraction. The results indicate that the as-prepared samples were composed of uniform, well-crystallized particles. The pristine LiCoMnO4 possessed an initial capacity of 87.0 mAh·g-1, while LiCo0.98Mg0.02MnO4 and LiCo0.98Al0.02MnO4 delivered 91.3 and 93.6 mAh·g-1, respectively. The proper doping amount increased the capacity and the ratio of discharge plateau at 5 V, while over-doping decreased the discharge capacity of LiCoMnO4. In addition, Al doping significantly improved the cycle performance of LiCoMnO4, while no apparent influence with Mg doping.; 福建省教育厅科技项目（A类，No. JA10072）、福建省高校杰出青年科研人才计划项目（No. JA11040）以及福建省自然科学基金计划项目（No. 2011J05021）资助; 作者联系地址：1. 福建师范大学化学系，福建福州 350007；2. 厦门大学固体表面物理化学国家重点实验室，化学化工学院化学系，福建厦门 361005; Author's Address: 1. Department of Chemistry, Fujian Normal University, Fuzhou 35007, China; 2. State Key Laboratory for Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; 通讯作者E-mail：xkhuang@126.com; yyang@xmu.edu.cn
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dx.doi.org/10.13208/j.electrochem.121122]
专题	2014年第20卷
推荐引用方式 GB/T 7714	游美玲,童庆松,李秀华,等. 锂离子正极材料LiCo1-xMgxMnO4与LiCo1-xAlxMnO4 (x = 0, 0.02, 0.05, 0.1)的制备及其电化学性能, Synthesis and Electrochemical Properties of LiCo1-xMgxMnO4 and LiCo1-xAlxMnO4 (x= 0, 0.02, 0.05, 0.1) as Positive Materials for Lithium-ion Batteries[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract10034.shtml,2014.
APA	游美玲.,童庆松.,李秀华.,林忞.,黄行康.,...&YANG Yong.(2014).锂离子正极材料LiCo1-xMgxMnO4与LiCo1-xAlxMnO4 (x = 0, 0.02, 0.05, 0.1)的制备及其电化学性能.http://electrochem.xmu.edu.cn/CN/abstract/abstract10034.shtml.
MLA	游美玲,et al."锂离子正极材料LiCo1-xMgxMnO4与LiCo1-xAlxMnO4 (x = 0, 0.02, 0.05, 0.1)的制备及其电化学性能".http://electrochem.xmu.edu.cn/CN/abstract/abstract10034.shtml (2014).