Dual-confined SeS2 cathode based on polyaniline-assisted double-layered micro/mesoporous carbon spheres for advanced Li-SeS(2 )battery

doi:10.1016/j.jpowsour.2020.227955

GIEC OpenIR

	Dual-confined SeS2 cathode based on polyaniline-assisted double-layered micro/mesoporous carbon spheres for advanced Li-SeS(2 )battery
	Hu, Jinlong 1; Ren, Yilun 1,2; Zhang, Lingzhi1
	2020-04-15
发表期刊	JOURNAL OF POWER SOURCES
ISSN	0378-7753
卷号	455 页码:9
通讯作者	Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
摘要	Selenium-sulfur solid solutions (SexSy) attracts soaring attention owing to its improved electrical conductivity over sulfur and higher theoretical specific capacity than selenium. Herein, high-performance lithium-selenium/sulfur batteries with a dual-confined cathode configuration by encapsulating SeS2 in double-layered hollow micro/mesoporous carbon spheres (DSMCs) with a conductive polyaniline (PANI) protection sheath are proposed. Polysulfides/polyselenides are efficiently restricted in the cathode via physical and chemical entrapment from DSMCs and PANI as well as chemical binding between selenium and sulfur. Benefiting from the distinct advantages of SeS2 and the well-constructed host framework, the cathode achieves high capacity utilization of 1018 mAh g(-1) at 0.2 A g(-1) , together with outstanding rate capability of 619 mAh g(-1) at 2 A g(-1) and excellent cycle life over 500 cycles with almost 100% Coulombic efficiency. The novel SexSy based cathode demonstrates a promising route to surmount some bottlenecks of current lithium-sulfur systems for high-performance rechargeable batteries.
关键词	Li-SeS2 batteries Double-layered micro/mesoporous carbon spheres Dual-confined cathode Polyaniline-assisted Cycling stability
DOI	10.1016/j.jpowsour.2020.227955
关键词[WOS]	LITHIUM ; SULFUR ; COMPOSITE ; BATTERIES ; SELENIUM ; MECHANISM ; LIFE
收录类别	SCI
语种	英语
资助项目	Guangzhou Municipal Project for Science Technology[201509010018] ; National Natural Science Foundation of China[21573239]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
项目资助者	Guangzhou Municipal Project for Science Technology ; National Natural Science Foundation of China
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000523640000011
出版者	ELSEVIER
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/27079
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 Prov Key Lab New & Renewable Energy Res, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 2.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Hu, Jinlong,Ren, Yilun,Zhang, Lingzhi. Dual-confined SeS2 cathode based on polyaniline-assisted double-layered micro/mesoporous carbon spheres for advanced Li-SeS(2 )battery[J]. JOURNAL OF POWER SOURCES,2020,455:9.
APA	Hu, Jinlong,Ren, Yilun,&Zhang, Lingzhi.(2020).Dual-confined SeS2 cathode based on polyaniline-assisted double-layered micro/mesoporous carbon spheres for advanced Li-SeS(2 )battery.JOURNAL OF POWER SOURCES,455,9.
MLA	Hu, Jinlong,et al."Dual-confined SeS2 cathode based on polyaniline-assisted double-layered micro/mesoporous carbon spheres for advanced Li-SeS(2 )battery".JOURNAL OF POWER SOURCES 455(2020):9.