Al掺杂尖晶石LiMn2O4正极材料的性能

CORC > 厦门大学 > 2013年第19卷

	Al掺杂尖晶石LiMn2O4正极材料的性能; Electrochemical Performance of Al-Doped Spinel LiMn2O4 Cathode Material for Li-ion Batteries
	王永龙 ; 王文阁 ; 张倩 ; 王昕 ; 曹建胜 ; 叶世海 ; WANG Yong-Long ; WANG Wen-Ge ; ZHANG Qian ; WANG Xin ; CAO Jian-Sheng ; YE Shi-Hai
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9967.shtml
	2013-06-28
关键词	锂离子电池\|正极\|尖晶石结构\|Al掺杂\|循环性能 Li-ion batteries\|cathode\|spinel structure\|Al-doping\|cycling performance
英文摘要	尖晶石LiMn2O4作为锂离子电池正极可大电流放电，且成本低、环境友好. 采用溶胶-凝胶法制备尖晶石LiMn2O4及Al掺杂材料. 使用X-射线衍射（XRD）和扫描电子显微镜（SEM）观察材料结构与形貌. 结果表明，复合材料颗粒尺寸300 ~ 500 nm，呈类球形. 电化学恒流充放电测试表明，Al掺杂尖晶石LiMn2O4电极的循环性明显提高，Al掺杂5%LiMn2O4（by mass，下同）正极在1C倍率充放电100周期循环后的容量保持率为98.2%，1C倍率充电、5C倍率放电下，100周期循环后其容量保持率为99.0%，表现出较优的电化学循环性能.; Spinel LiMn2O4, a cathode material for Li-ion batteries, is featured as good high-rate performance, low cost and environmental friendly. The pristine and Al-doped LiMn2O4 samples were prepared by sol-gel method. The structure and micromorphology of the as-prepared samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results demonstrated that the as-prepared LiMn2O4 samples had a typical cubic spinel structure and were composed of sphere-like particles with a diameter range of 300 ~ 500 nm. Galvanostatic charge-discharge tests showed that the LiMn2O4 samples doped with Al element exhibited an enhanced cycling performance. Especially, in the case of LiMn2O4 with 5% Al-doped, the discharge capacity retention was about 98.2% at the rate of 1C discharge and was 99% at the rate of 5C discharge, based on the same charge rate of 1C.; 国家自然科学基金项目（No. 21273119）资助; 作者联系地址：南开大学新能源材料化学研究所，天津 300071; Author's Address: Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China; 通讯作者E-mail：yeshihai@nankai.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://dspace.xmu.edu.cn/handle/2288/58585]
专题	2013年第19卷
推荐引用方式 GB/T 7714	王永龙,王文阁,张倩,等. Al掺杂尖晶石LiMn2O4正极材料的性能, Electrochemical Performance of Al-Doped Spinel LiMn2O4 Cathode Material for Li-ion Batteries[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9967.shtml,2013.
APA	王永龙.,王文阁.,张倩.,王昕.,曹建胜.,...&YE Shi-Hai.(2013).Al掺杂尖晶石LiMn2O4正极材料的性能.http://electrochem.xmu.edu.cn/CN/abstract/abstract9967.shtml.
MLA	王永龙,et al."Al掺杂尖晶石LiMn2O4正极材料的性能".http://electrochem.xmu.edu.cn/CN/abstract/abstract9967.shtml (2013).