Encapsulation of SeS2 into Nitrogen-Doped Free-Standing Carbon Nanofiber Film Enabling Long Cycle Life and High Energy Density K-SeS2 Battery

doi:10.1021/acsnano.9b00980

	Encapsulation of SeS2 into Nitrogen-Doped Free-Standing Carbon Nanofiber Film Enabling Long Cycle Life and High Energy Density K-SeS2 Battery
	Yao, Yu 1,2,3; Xu, Rui 1,4; Chen, Minglong 1; Cheng, Xiaolong 1; Zeng, Sifan 1; Li, Dongjun 1; Zhou, Xuefeng 1; Wu, Xiaojun 1; Yu, Yan 1
刊名	ACS NANO
	2019-04-01
卷号	13 期号:4 页码:4695-4704
关键词	K-SeS2 battery flexible high energy density N-doping carbon nanofibers
ISSN号	1936-0851
DOI	10.1021/acsnano.9b00980
通讯作者	Yao, Yu(yanyumse@ustc.edu.cn)
英文摘要	K-SeS2 batteries could provide a low-cost and high energy density energy storage system, because the earth-abundant element potassium (K) shows a low reduction potential and a high gravimetric capacity. But the K-SeS2 battery has never been reported because of the lack of high-performance electrode materials. Herein, we design an advanced K-SeS2 battery by encapsulation of SeS2 in the nitrogen-doped free-standing porous carbon matrix (SeS2@NCNFs). The self-supported SeS2@NCNFs electrode achieves a high reversible capacity of 417 mAh g(-1) after 1000 cycles with 85% capacity retention at 0.5 Ag1- with nearly 100% Coulombic efficiency. The nanosized SeS2 nano particles are encapsulated in the carbon matrix, which minimizes the volume expansion during cycling and shortens the ion transport pathways, thus enhancing the rate capability. The interconnected porous carbon nanofiber structure could improve the flexibility and offer a continuous pathway for rapid ionic/electronic transport. The DFT calculations confirm that high content N-doping (11.2 at. %) can enhance the chemical affinity between the discharge product and the N-doped carbon. The pyrrolic and pyridinic N-doping lead to stronger adsorption than that of the graphitic N-doping. This proposed design holds great promise for practical application of high energy density K-SeS2 batteries.
资助项目	National Key R&D Research Program of China[2018YFB0905400] ; National Natural Science Foundation of China[51622210] ; National Natural Science Foundation of China[51872277] ; National Natural Science Foundation of China[21605136] ; Fundamental Research Funds for the Central Universities[WK3430000004] ; DNL Cooperation Fund, CAS[DNL180310]
WOS关键词	SODIUM RECHARGEABLE BATTERIES ; POTASSIUM-SULFUR BATTERIES ; HIGH-PERFORMANCE ; ION BATTERIES ; ELECTRODE MATERIALS ; SELENIUM ; LITHIUM ; COMPOSITE ; CATHODES ; STORAGE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000466052900095
资助机构	National Key R&D Research Program of China ; National Key R&D Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; DNL Cooperation Fund, CAS ; DNL Cooperation Fund, CAS ; National Key R&D Research Program of China ; National Key R&D Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; DNL Cooperation Fund, CAS ; DNL Cooperation Fund, CAS ; National Key R&D Research Program of China ; National Key R&D Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; DNL Cooperation Fund, CAS ; DNL Cooperation Fund, CAS ; National Key R&D Research Program of China ; National Key R&D Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; DNL Cooperation Fund, CAS ; DNL Cooperation Fund, CAS
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/171909]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Yao, Yu
作者单位	1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Mat Sci & Engn, Key Lab Mat Energy Convers,CAS, Hefei 230026, Anhui, Peoples R China 2.Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Dalian Natl Lab Clean Energy DNL, Dalian 116023, Peoples R China 4.Xian Univ Technol, Inst Adv Electrochem Energy, Xian 710048, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Yao, Yu,Xu, Rui,Chen, Minglong,et al. Encapsulation of SeS2 into Nitrogen-Doped Free-Standing Carbon Nanofiber Film Enabling Long Cycle Life and High Energy Density K-SeS2 Battery[J]. ACS NANO,2019,13(4):4695-4704.
APA	Yao, Yu.,Xu, Rui.,Chen, Minglong.,Cheng, Xiaolong.,Zeng, Sifan.,...&Yu, Yan.(2019).Encapsulation of SeS2 into Nitrogen-Doped Free-Standing Carbon Nanofiber Film Enabling Long Cycle Life and High Energy Density K-SeS2 Battery.ACS NANO,13(4),4695-4704.
MLA	Yao, Yu,et al."Encapsulation of SeS2 into Nitrogen-Doped Free-Standing Carbon Nanofiber Film Enabling Long Cycle Life and High Energy Density K-SeS2 Battery".ACS NANO 13.4(2019):4695-4704.