Improvement of electrochemical properties of LiCoO2 at 4.6 V by a LiPAA coating

doi:10.1007/s10854-022-08588-w

	Improvement of electrochemical properties of LiCoO2 at 4.6 V by a LiPAA coating
	Gao, Hongfu 1; Meng, Yanshuang 1,2; Liu, Xingzhong 1; Zhu, Fuliang 1,2
刊名	JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
	2022-07-01
卷号	33 期号:21 页码:17125-17136
关键词	CoatingsElectric dischargesElectrodesLithium compounds Discharge capacitiesElectrochemical performanceKey factorsLiCoO 2Polyacrylate coatingsSide reactionsStructural instabilityStructural interfaceVoltage rangesWet-chemical method
ISSN号	0957-4522
DOI	10.1007/s10854-022-08588-w
英文摘要	Structural instability and interface side reactions are considered to be the key factors that LiCoO2 (LCO) cannot maintain good electrochemical performance at voltages above 4.5 V. Here, a coating of lithium polyacrylate (LiPAA) was coated on the surface of the LCO by a wet chemical method. At a current density of 15 mA g(-1), LCO coated with LiPAA coating (LCO@LiPAA) has a discharge capacity of 216.7 mAh g(-1) in the voltage range of 2.7-4.6 V after 100 cycles, and the capacity retention rate is 84.53%. Even at a current density of 750 mA g(-1), the LCO@LiPAA-positive electrode still has a discharge capacity of 130.3 mAh g(-1). The results show that the uniform coating effectively blocks the side reactions between LCO and electrolyte, inhibits the occurrence of the irreversible phase transition of LCO, and improves the electrochemical performance of LCO@LiPAA cathode at 4.6 V.
WOS研究方向	Engineering ; Materials Science ; Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000815476300002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158861]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 2.State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Gao, Hongfu,Meng, Yanshuang,Liu, Xingzhong,et al. Improvement of electrochemical properties of LiCoO2 at 4.6 V by a LiPAA coating[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2022,33(21):17125-17136.
APA	Gao, Hongfu,Meng, Yanshuang,Liu, Xingzhong,&Zhu, Fuliang.(2022).Improvement of electrochemical properties of LiCoO2 at 4.6 V by a LiPAA coating.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,33(21),17125-17136.
MLA	Gao, Hongfu,et al."Improvement of electrochemical properties of LiCoO2 at 4.6 V by a LiPAA coating".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 33.21(2022):17125-17136.