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Study of CNTs-MoS2/CeO2 composites for lithium-sulfur battery performance
Feng, Wangjun; Yang, Haijiang; Pu, Zhongsheng; Zhang, Li
2022-06
发表期刊IONICS
ISSN0947-7047
卷号28期号:6页码:2781-2791
摘要In recent years, lithium-sulfur batteries have received a lot of attention because of their high energy density (2600 Wh kg(-1)) and theoretical specific capacity (1675 mAh g(-1)), but they also suffer from poor electrical conductivity of S and its final products Li2S (the room temperature electronic conductivity is 5 x 10(-30) S cm(-1) and 3.6 x 10(-7) S cm(-1), respectively), volume expansion of the sulfur cathode during the reaction, and the shuttle effect of the polysulfide generated by the reaction in the electrolyte need to be solved. In order to solve the above problems, this paper has successfully compounded carbon nanotubes (CNTs) with molybdenum disulfide (MoS2) and cerium dioxide (CeO2) nanomaterials by a simple hydrothermal method to prepare CNTs-MoS2/CeO2 nanocomposites, in which MoS2 catalyzes the conversion of long-chain polysulfides to short-chain polysulfides, and CeO2 can adsorb polysulfides and inhibit their dissolution, thus alleviating the shuttle effect. The experimental results show that the composites have excellent electrochemical performance, with a discharge capacity of 1373.4 mAh g(-1) in the first cycle at a current density of 0.1 C, and a discharge capacity of 933.9 mAh g(-1) after 200 cycles at a current density of 0.2 C. The Coulomb efficiency can reach over 99%.
关键词Nanocomposite lithium-sulfur batteries Polysulfides Electrochemical properties
DOI10.1007/s11581-022-04535-1
收录类别SCIE ; EI
语种英语
WOS研究方向Chemistry ; Electrochemistry ; Physics
WOS类目Chemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
WOS记录号WOS:000777417000001
出版者SPRINGER HEIDELBERG
EI入藏号20221511936890
EI主题词Nanocomposites
EI分类号701.1 Electricity: Basic Concepts and Phenomena ; 702 Electric Batteries and Fuel Cells ; 702.1.1 Primary Batteries ; 702.1.2 Secondary Batteries ; 712.1 Semiconducting Materials ; 761 Nanotechnology ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 815.1.1 Organic Polymers ; 818.2.1 Synthetic Rubber ; 933 Solid State Physics ; 933.1 Crystalline Solids
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/158087
专题理学院
通讯作者Feng, Wangjun
作者单位Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
第一作者单位理学院
通讯作者单位理学院
第一作者的第一单位理学院
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GB/T 7714
Feng, Wangjun,Yang, Haijiang,Pu, Zhongsheng,et al. Study of CNTs-MoS2/CeO2 composites for lithium-sulfur battery performance[J]. IONICS,2022,28(6):2781-2791.
APA Feng, Wangjun,Yang, Haijiang,Pu, Zhongsheng,&Zhang, Li.(2022).Study of CNTs-MoS2/CeO2 composites for lithium-sulfur battery performance.IONICS,28(6),2781-2791.
MLA Feng, Wangjun,et al."Study of CNTs-MoS2/CeO2 composites for lithium-sulfur battery performance".IONICS 28.6(2022):2781-2791.
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