Double-layered hollow carbon spheres embedded in 3D conductive network as an efficient Se0.4S0.6 host for advanced lithium batteries

doi:10.1016/j.jallcom.2019.07.224

	Double-layered hollow carbon spheres embedded in 3D conductive network as an efficient Se0.4S0.6 host for advanced lithium batteries
	Hu, Jinlong 1,2; Zhang, Congcong 1; Zhang, Lingzhi 1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2019-10-25
卷号	806 页码:146-152
关键词	Lithium batteries Dual-confined SexSy-based cathode Se0.4S0.6 Cycling stability
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2019.07.224
通讯作者	Zhang, Lingzhi(lzzhang@ins.giec.ac.cn)
英文摘要	Seleniumesulfur solid solutions show unique advantages beyond sulfur and selenium as cathode materials for lithium batteries. Herein, we propose a dual-confined SexSy-based cathode with a three-dimensional (3D) network structure where Se0.4S0.6 is first encapsulated in double-layered hollow carbon spheres (DLHCs) and embedded by 3D graphene-like material (3DG) shells. The dissolution of polysulfides/ polyselenides in the cathode is effectively inhibited through dual confinement from DLHCs and 3DG as well as chemical binding between sulfur and selenium. Benefiting from the indispensable advantages of Se0.4S0.6 and the uniquely designed host architecture, the 3DG-DLHC-Se0.4S0.6 cathode delivers a high reversible capacity of 627 mAh g(-1) at 0.2 A g(-1) after 200 cycles, good rate capability of 533 mAh g(-1) at 2Ag(-1), and outstanding long cycling stability over 500 cycles with Coulombic efficiency almost reaching 100%. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	K. C. Wong Education Foundation ; National Natural Science Foundation of China[21573239] ; Guangzhou Automobile Group (China)
WOS关键词	SELENIUM DISULFIDE ; GRAPHENE ; SULFUR ; CATHODE ; MECHANISM ; FOAM
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000485039800018
资助机构	K. C. Wong Education Foundation ; National Natural Science Foundation of China ; Guangzhou Automobile Group (China)
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/25564]
专题	中国科学院广州能源研究所
通讯作者	Zhang, Lingzhi
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Key Lab New & Renewable Energy Res & De, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu, Jinlong,Zhang, Congcong,Zhang, Lingzhi. Double-layered hollow carbon spheres embedded in 3D conductive network as an efficient Se0.4S0.6 host for advanced lithium batteries[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,806:146-152.
APA	Hu, Jinlong,Zhang, Congcong,&Zhang, Lingzhi.(2019).Double-layered hollow carbon spheres embedded in 3D conductive network as an efficient Se0.4S0.6 host for advanced lithium batteries.JOURNAL OF ALLOYS AND COMPOUNDS,806,146-152.
MLA	Hu, Jinlong,et al."Double-layered hollow carbon spheres embedded in 3D conductive network as an efficient Se0.4S0.6 host for advanced lithium batteries".JOURNAL OF ALLOYS AND COMPOUNDS 806(2019):146-152.