Improving the cathode properties of Ni-rich LiNi0.6Co0.2Mn0.2O2 at high voltages under 5 C by Li2SiO3 coating and Si4+ doping

doi:10.1016/j.jallcom.2018.05.226

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	Improving the cathode properties of Ni-rich LiNi0.6Co0.2Mn0.2O2 at high voltages under 5 C by Li2SiO3 coating and Si4+ doping
	Peng, Zhengjun; Yang, Guowei; Li, Faqiang; Zhu, Zenghu; Liu, Zeyu
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2018-09-25
卷号	762 页码:827-834
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2018.05.226
英文摘要	Cathode materials based on zLi(2)SiO(3)@LiNi0.6Co0.2Mn0.2O2 (z = 0, 0.03, 0.05, 0.08) (where @ denotes coated on the surface of) have been successfully prepared via a syn-lithiation strategy. The cycling performance of LiNi0.6Co0.2Mn0.2O2 has been effectively enhanced by coating a Li2SiO3 thin film. Compared to the 81 mAh/g discharge capacity of the pristine materials, the 5 mol% Li2SiO3-coated LiNi0.6Co0.2Mn0.2O2 electrode exhibits 31% higher discharge capacity between 2.5 V and 4.5 Vat a rate of 5 C. The reason for the improved cycling performance of LiNi0.6Co0.2Mn0.2O2 is Li2SiO3 coating and Si4+ doping, which stabilizes the structure, suppresses the direct contact between the active materials and electrolytes, enhances lithium ion diffusion at the electrode/electrolyte interface, and prevents the pulverization of active materials during repeated charging/discharging. (C) 2018 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34486]
专题	青海盐湖研究所_盐湖资源与化学实验室
推荐引用方式 GB/T 7714	Peng, Zhengjun,Yang, Guowei,Li, Faqiang,et al. Improving the cathode properties of Ni-rich LiNi0.6Co0.2Mn0.2O2 at high voltages under 5 C by Li2SiO3 coating and Si4+ doping[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,762:827-834.
APA	Peng, Zhengjun,Yang, Guowei,Li, Faqiang,Zhu, Zenghu,&Liu, Zeyu.(2018).Improving the cathode properties of Ni-rich LiNi0.6Co0.2Mn0.2O2 at high voltages under 5 C by Li2SiO3 coating and Si4+ doping.JOURNAL OF ALLOYS AND COMPOUNDS,762,827-834.
MLA	Peng, Zhengjun,et al."Improving the cathode properties of Ni-rich LiNi0.6Co0.2Mn0.2O2 at high voltages under 5 C by Li2SiO3 coating and Si4+ doping".JOURNAL OF ALLOYS AND COMPOUNDS 762(2018):827-834.