高容量正极材料0.08LiCo0.75Al0.25O2-0.92LiNiO2的合成与电化学性能研究

CORC > 厦门大学 > 2012年第18卷

	高容量正极材料0.08LiCo0.75Al0.25O2-0.92LiNiO2的合成与电化学性能研究; Synthesis and Electrochemical Properties of High-Capacity Cathode Material 0.08LiCo0.75Al0.25O2-0.92LiNiO2
	王茹英 ; 邱天 ; 毛冲 ; 杨文胜 ; WANG Ru-Ying ; QIU Tian ; MAO Chong ; YANG Wen-Sheng
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9899.shtml
	2012-08-28
关键词	锂离子电池正极材料 LiNiO2 LiCo0.75Al0.25O2 包覆 Li-ion battery cathode material LiNiO2 LiCo0.75Al0.25O2 coating
英文摘要	在恒定pH值下将层状钴铝双羟基复合金属氧化物（CoAl-LDH）均匀包覆在球状Ni(OH)2表面，与LiOH.H2O混合均匀后，经高温煅烧制得钴铝酸锂包覆镍酸锂0.08LiCo0.75Al0.25O2-0.92LiNiO2正极材料. 电化学测试表明，0.08LiCo0.75Al0.25O2-0.92LiNiO2正极比容量高，具有良好的倍率性能和循环寿命，其0.1C放电比容量为211 mAh.g-1，0.5C放电比容量为195.6 mAh.g-1，3C放电比容量为161 mAh.g-1，0.5C 30周期循环后容量保持率为93.2%，明显优于LiNiO2和钴酸锂包覆镍酸锂0.08LiCoO2-0.92LiNiO2正极.; CoAl-LDH or Co(OH)2 coated spherical Ni(OH)2 precursors were obtained via a co-precipitation method at a constant pH. The mixtures of the precursors and LiOH.H2O were annealed at high temperature in O2 atmosphere, and then the cathode materials of 0.08LiCo0.75Al0.25O2-0.92LiNiO2, 0.08LiCoO2-0.92LiNiO2 and LiNiO2 were synthesized. Effects of the coating layer were also studied. The results showed that the 0.08LiCo0.75Al0.25O2-0.92LiNiO2 material possessed the best rate and cycle life performance. The discharging capacities at 0.1C, 0.5C and 3C were 211 mAh.g-1, 195.6 mAh.g-1 and 161 mAh.g-1, respectively, and the capacity retention ratio after 30 cycles at 0.5C was 93.2 %. These performances were much better than those of both pure LiNiO2 and 0.08LiCoO2-0.92LiNiO2.; 国家自然科学基金项目(No. 20971011)、新世纪优秀人才计划项目(No. NCET-08-0713)、中央高校基本科研业务费项目(No. ZD1004)和北京市共建项目专项资助; 作者联系地址：北京化工大学化工资源有效利用国家重点实验室，北京 100029; Author's Address: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; 通讯作者E-mail：yangws@mail.buct.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/2288/58509]
专题	2012年第18卷
推荐引用方式 GB/T 7714	王茹英,邱天,毛冲,等. 高容量正极材料0.08LiCo0.75Al0.25O2-0.92LiNiO2的合成与电化学性能研究, Synthesis and Electrochemical Properties of High-Capacity Cathode Material 0.08LiCo0.75Al0.25O2-0.92LiNiO2[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9899.shtml,2012.
APA	王茹英.,邱天.,毛冲.,杨文胜.,WANG Ru-Ying.,...&YANG Wen-Sheng.(2012).高容量正极材料0.08LiCo0.75Al0.25O2-0.92LiNiO2的合成与电化学性能研究.http://electrochem.xmu.edu.cn/CN/abstract/abstract9899.shtml.
MLA	王茹英,et al."高容量正极材料0.08LiCo0.75Al0.25O2-0.92LiNiO2的合成与电化学性能研究".http://electrochem.xmu.edu.cn/CN/abstract/abstract9899.shtml (2012).