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dc.contributor.authorCheng, Hu
dc.contributor.authorZhu, Changbao
dc.contributor.authorLu, Mi
dc.contributor.authorYang, Yong
dc.contributor.author杨勇
dc.date.accessioned2011-05-15T04:22:55Z
dc.date.available2011-05-15T04:22:55Z
dc.date.issued2007-04
dc.identifier.citationJOURNAL OF POWER SOURCES,2007,173(1):531-537zh_CN
dc.identifier.issn0378-7753
dc.identifier.urihttp://dx.doi.org/doi:10.1016/j.jpowsour.2007.04.027
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/8865
dc.description.abstractThe passive layer formed on lithium in a PEO20-LiTFSI-5%PC gel polymer electrolyte after different electrochemical processes was characterized using X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and electrochemical impedance spectroscopy (EIS). EIS indicates that the interface resistance of lithium electrodes increases with time after fresh lithium deposition, whereas the interfacial resistance has no change with time after lithium deposition/dissolution process. The XPS analysis as well as FTIR data show that the main compositions of the passive layer are ROCO2Li, Li2CO3, LiOH, LiX (X = F, S, N, SO2CF3) and Li oxides, mostly due to the reactions occurred between lithium and PC, LiTFSI, and trace impurities (H2O, O-2), and the lithium dissolution process has no distinctive effect on the composition of passive layer. XPS depth profile of the passive film detected by XPS and sputtering experiments further demonstrates that the presence of Li2CO3/LiOH is in the outer layer and Li2O, LiF mainly in the inner part of the passive layer. (C) 2007 Published by Elsevier B.V.zh_CN
dc.language.isoenzh_CN
dc.publisherELSEVIER SCIENCE BVzh_CN
dc.subjectXPSzh_CN
dc.subjectFTIRzh_CN
dc.subjectpolymer electrolytezh_CN
dc.subjectpassive layerzh_CN
dc.subjectnickelzh_CN
dc.subjectlithiumzh_CN
dc.titleSpectroscopic and electrochemical characterization of the passive layer formed on lithium in gel polymer electrolytes containing propylene carbonatezh_CN
dc.typeArticlezh_CN


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