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dc.contributor.authorJ.M. Yan
dc.contributor.authorH.Z. Huang
dc.contributor.authorJ. Zhang
dc.contributor.authorZ.J. Liu
dc.contributor.authorY.Yang
dc.contributor.author杨勇
dc.date.accessioned2011-10-20T14:36:54Z
dc.date.available2011-10-20T14:36:54Z
dc.date.issued2005-06
dc.identifier.citationJOURNAL OF POWER SOURCES,2005,146(1-2):264-269zh_CN
dc.identifier.issn0378-7753
dc.identifier.urihttp://dx.doi.org/doi:10.1016/j.jpowsour.2005.03.144
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/10965
dc.description.abstractThis paper reports the study of cobalt disulfide as a promising anode material for lithium ion batteries. The crystal structure and surface morphology have been characterized by using X-ray diffraction (XRD), SEM and Brunauer-Emmett-Teller (BET) techniques. The results of XRD show that the sample is a cubic phase with a space group Pa3. The grain size of the sample was 30 mu m with a special nano-structured characteristic as observed by means of SEM. Charge-discharge experiments show that the sample with 30 wt.% acetylene black at the current density of 50 mA g(-1) has the best performance, it shows that the first discharge capacity is up to 1280 mAh g(-1). Ex situ XRD experiments were also carried out to determine the structural changes of delithiated/lithiated anode materials and used to analyze the reaction mechanism. Calculated Gibbs free energy change (Delta rG) and electromotive force (emf, E) values for the reaction CoS2 + 4Li(+) + 4e(-) -> Co + 2Li(2)S are -146 kJ mol and 1.898 V, respectively. Based on the results, a possible reaction mechanism of CoS2 anode during intercalation of Li ions was proposed. (c) 2005 Elsevier B.V. All rights reserved.zh_CN
dc.language.isozhzh_CN
dc.publisherELSEVIER SCIENCE BVzh_CN
dc.subjectcobalt disulfidezh_CN
dc.subjectCoS2zh_CN
dc.subjectanode materialzh_CN
dc.subjectlithium ion batterieszh_CN
dc.titleA study of novel anode material CoS2 for lithium ion batteryzh_CN


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