Structural and electrochemical properties of Mg-doped nickel based cathode materials LiNi0.6Co0.2Mn0.2-xMgxO2 for lithium ion batteries
Huang, ZJ (Huang, Zhenjun); Wang, ZX (Wang, Zhixing); Zheng, XB (Zheng, Xiaobo); Guo, HJ (Guo, Huajun); Li, XH (Li, Xinhai); Jing, Q (Jing, Qun); Yang, ZH (Yang, Zhihua)
2015
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume5Issue:108Pages:88773-88779
Abstract

Layered LiNi0.6Co0.2Mn0.2-xMgxO2 (x = 0, 0.01, 0.03, 0.05) samples have been prepared by co-precipitation and high-temperature solid state methods. The influence of the Mg dopant on its chemical component, crystal structure, surface valence states, electrochemical properties, and Li+ diffusion barrier has been studied. Rietveld refinements confirm that when Mg was substituted for Mn in LiNi0.6Co0.2Mn0.2O2, the cation mixing decreased, the lattice parameters a, c and interslab space thickness decreased, while the c/a ratio increased. Electrochemical testing confirms that the initial coulombic efficiency and cycling stability increase by the substitution of Mg for Mn, and electrochemical polarization decreases. First-principles calculations show that the improvement of rate capability may be attributed to less cation mixing.

DOI10.1039/c5ra16633k
Indexed BySCI
WOS IDWOS:000363417900026
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/5180
Collection中国科学院特殊环境功能材料与器件重点试验室
材料物理与化学研究室
Affiliation1.Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
2.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Xinjiang Key Lab Elect Informat Mat & Devices, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
3.Shihezi Univ, Sch Sci, Dept Phys, Shihezi 832000, Peoples R China
Recommended Citation
GB/T 7714
Huang, ZJ ,Wang, ZX ,Zheng, XB ,et al. Structural and electrochemical properties of Mg-doped nickel based cathode materials LiNi0.6Co0.2Mn0.2-xMgxO2 for lithium ion batteries[J]. RSC ADVANCES,2015,5(108):88773-88779.
APA Huang, ZJ .,Wang, ZX .,Zheng, XB .,Guo, HJ .,Li, XH .,...&Yang, ZH .(2015).Structural and electrochemical properties of Mg-doped nickel based cathode materials LiNi0.6Co0.2Mn0.2-xMgxO2 for lithium ion batteries.RSC ADVANCES,5(108),88773-88779.
MLA Huang, ZJ ,et al."Structural and electrochemical properties of Mg-doped nickel based cathode materials LiNi0.6Co0.2Mn0.2-xMgxO2 for lithium ion batteries".RSC ADVANCES 5.108(2015):88773-88779.
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