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 |
ISSN | 0947-7047 |
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 |
DOI | 10.1007/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 |
来源库 | WOS |
引用统计 | |
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 |
推荐引用方式 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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