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dc.contributor.authorLu, Mizh_CN
dc.contributor.authorTian, Yanyanzh_CN
dc.contributor.authorYang, Yongzh_CN
dc.contributor.author杨勇zh_CN
dc.date.accessioned2011-04-26T08:05:12Z
dc.date.available2011-04-26T08:05:12Z
dc.date.issued2009-07zh_CN
dc.identifier.citationELECTROCHIMICA ACTA,2009,54(27):6792-6796zh_CN
dc.identifier.issn0013-4686zh_CN
dc.identifier.urihttp://dx.doi.org/doi:10.1016/j.electacta.2009.06.079zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/3304
dc.description.abstractNatural graphite (NG) was sulfurized by heat-treating or by high energy ball-milling the blend of NG with sulfur powder. The effect of the surface functional groups, containing sulfur, on the performance of the NG anode for a lithium ion battery was then investigated. X-ray photoelectron spectroscopy revealed that the sulfur was introduced onto the surface of NG in both of these methods. The results of scanning electron microscopy and Raman spectroscopy showed that the surface disorder of NG increased after sulfurization. Charge/discharge tests showed that the reversible capacity of the first cycle was increased after surface sulfurization and that the coulombic efficiency of the first cycle increased for the heat-treated sample but decreased for the ball-milled one. The change in the electrochemical performance was due to a number of factors including an increase in new active sites for lithium storage and an increase in surface area and increased disorder of the sulfurized NG samples. (C) 2009 Elsevier Ltd. All rights reserved.zh_CN
dc.description.sponsorshipNational Research Program of China (973 program) [2007CB209702]zh_CN
dc.language.isoenzh_CN
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDzh_CN
dc.subjectLithium ion batterieszh_CN
dc.subjectAnodezh_CN
dc.subjectNatural graphitezh_CN
dc.subjectSurface sulfurizationzh_CN
dc.subjectSEIzh_CN
dc.titleA comparison of electrochemical performance of natural graphite sulfurized by ball-milling and heat-treating as an anode for lithium ion batterieszh_CN
dc.typeArticlezh_CN


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