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
Source Publication	JOURNAL OF POWER SOURCES
ISSN	0378-7753
Volume	455 Pages:9
Corresponding Author	Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
Abstract	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.
Keyword	Li-SeS2 batteries Double-layered micro/mesoporous carbon spheres Dual-confined cathode Polyaniline-assisted Cycling stability
DOI	10.1016/j.jpowsour.2020.227955
WOS Keyword	LITHIUM ; SULFUR ; COMPOSITE ; BATTERIES ; SELENIUM ; MECHANISM ; LIFE
Indexed By	SCI
Language	英语
Funding Project	Guangzhou Municipal Project for Science Technology[201509010018] ; National Natural Science Foundation of China[21573239]
WOS Research Area	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
Funding Organization	Guangzhou Municipal Project for Science Technology ; National Natural Science Foundation of China
WOS Subject	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS ID	WOS:000523640000011
Publisher	ELSEVIER
Citation statistics	Cited Times:25[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.giec.ac.cn/handle/344007/27079
Collection	中国科学院广州能源研究所
Corresponding Author	Zhang, Lingzhi
Affiliation	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
First Author Affilication	GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation 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.

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