Application of CNTs-MoS2/SnO2 p-n heterojunction nanocomposites in lithium-sulfur batteries

doi:10.1080/00150193.2022.2087245

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	Application of CNTs-MoS2/SnO2 p-n heterojunction nanocomposites in lithium-sulfur batteries
	Yang, Haijiang; Feng, Wangjun; Pu, Zhongsheng; Chen, Jingzhou; Zhao, Wei; Huang, Zhaoyu
刊名	FERROELECTRICS
	2022-08-18
卷号	596 期号:1 页码:1-12
关键词	Carbon nanotube lithium-sulfur battery p-n heterojunction ion and electron transport electrochemical performance
ISSN号	0015-0193
DOI	10.1080/00150193.2022.2087245
英文摘要	Compared with traditional secondary batteries such as lithium-ion batteries, lithium-sulfur batteries have a higher theoretical specific capacity (1675 mAh/g) and energy density (2600 Wh/kg), so they are regarded as the most promising one of the lithium batteries. However, it also has problems such as volume expansion during the reaction, poor conductivity of sulfur, serious shuttle effect caused by poly-sulfides, and slow electrochemical reaction kinetics. In this paper, a two-step hydrothermal method was used to synthesize CNTs-MoS2/SnO2 composite materials. We assembled CNTs/MoS2 materials, CNTs/SnO2 materials and CNTs-MoS2/SnO2 composite materials into batteries and tested their electrochemical performance. The experimental results show that the CNTs-MoS2/SnO2 composite material has a more significant catalytic effect and a stronger adsorption capacity. The first-lap discharge specific capacity reaches 1369.9 mAh/g at a rate of 0.1 C, and the Coulomb efficiency can reach more than 98%after 150 cycles at 0.2 C. Its excellent performance is due to the synergistic inter-action of p-type semiconductor metal sulfide MoS2 and n-type semiconductor metal oxide SnO2, and the p-n heterojunction interface formed by the two promotes ion and the transmission rate of electrons.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000850462400001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159790]
专题	理学院
作者单位	Lanzhou Univ Technol, Sch Sci, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Yang, Haijiang,Feng, Wangjun,Pu, Zhongsheng,et al. Application of CNTs-MoS2/SnO2 p-n heterojunction nanocomposites in lithium-sulfur batteries[J]. FERROELECTRICS,2022,596(1):1-12.
APA	Yang, Haijiang,Feng, Wangjun,Pu, Zhongsheng,Chen, Jingzhou,Zhao, Wei,&Huang, Zhaoyu.(2022).Application of CNTs-MoS2/SnO2 p-n heterojunction nanocomposites in lithium-sulfur batteries.FERROELECTRICS,596(1),1-12.
MLA	Yang, Haijiang,et al."Application of CNTs-MoS2/SnO2 p-n heterojunction nanocomposites in lithium-sulfur batteries".FERROELECTRICS 596.1(2022):1-12.