Structural engineering of sulfur-doped carbon encapsulated bismuth sulfide core-shell structure for enhanced potassium storage performance

doi:10.1007/s12274-021-3560-3

	Structural engineering of sulfur-doped carbon encapsulated bismuth sulfide core-shell structure for enhanced potassium storage performance
	Wang, Changlai 1,2; Lu, Jian 2; Tong, Huigang 2; Wu, Shuilin 1; Wang, Dongdong 4; Liu, Bin 5; Cheng, Ling 2; Lin, Zhiyu 2; Hu, Lin 3; Wang, Hui 3
刊名	NANO RESEARCH
	2021-05-26
关键词	structural engineering potassium-ion batteries core-shell structure diffusion barrier full cell
ISSN号	1998-0124
DOI	10.1007/s12274-021-3560-3
通讯作者	Zhang, Wenjun(apwjzh@cityu.edu.hk) ; Chen, Qianwang(cqw@ustc.edu.cn)
英文摘要	Owing to the high theoretical capacity, metal sulfides have emerged as promising anode materials for potassium-ion batteries (PIBs). However, sluggish kinetics, drastic volume expansion, and polysulfide dissolution during charge/discharge result in unsatisfactory electrochemical performance. Herein, we design a core-shell structure consisting of an active bismuth sulfide core and a highly conductive sulfur-doped carbon shell (Bi2S3@SC) as a novel anode material for PIBs. Benefiting from its unique core-shell structure, this Bi2S3@SC is endowed with outstanding potassium storage performance with high specific capacity (626 mAh.g(-1) under 50 mA.g(-1)) and excellent rate capability (268.9 mAh.g(-1) at 1 A.g(-1)). More importantly, a Bi2S3@SC//KFe[Fe(CN)(6)] full cell is successfully fabricated, which achieves a high reversible capacity of 257 mAh.g(-1) at 50 mA.g(-1) over 50 cycles, holding great potentials in practical applications. Density functional theory (DFT) calculations reveal that potassium ions have a low diffusion barrier of 0.54 eV in Bi2S3 due to the weak van der Waals interactions between layers. This work heralds a promising strategy in the structural design of high-performance anode materials for PIBs.
资助项目	Hong Kong Scholars Program[XJ2019022] ; Fundamental Research Funds for the Central Universities[WK2060000032] ; National Natural Science Foundation[51772283] ; National Natural Science Foundation[21972145] ; National Natural Science Foundation[51872249] ; General Research Fund (GRF)[11307619]
WOS关键词	ION BATTERIES ; LONG-LIFE ; ANODES ; CHALLENGES ; COMPOSITE ; SYSTEMS ; LITHIUM ; NANOROD ; BI2S3
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	TSINGHUA UNIV PRESS
WOS记录号	WOS:000654873300001
资助机构	Hong Kong Scholars Program ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation ; General Research Fund (GRF)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/122659]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Wenjun; Chen, Qianwang
作者单位	1.City Univ Hong Kong, Ctr Super Diamond & Adv Films, Dept Mat Sci & Engn, Kowloon, Hong Kong 999077, Peoples R China 2.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Mat Sci & Engn, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui High Magnet Field Lab, Hefei 230031, Peoples R China 4.Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, 21 Nanyang Link, Singapore 637371, Singapore 5.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wang, Changlai,Lu, Jian,Tong, Huigang,et al. Structural engineering of sulfur-doped carbon encapsulated bismuth sulfide core-shell structure for enhanced potassium storage performance[J]. NANO RESEARCH,2021.
APA	Wang, Changlai.,Lu, Jian.,Tong, Huigang.,Wu, Shuilin.,Wang, Dongdong.,...&Chen, Qianwang.(2021).Structural engineering of sulfur-doped carbon encapsulated bismuth sulfide core-shell structure for enhanced potassium storage performance.NANO RESEARCH.
MLA	Wang, Changlai,et al."Structural engineering of sulfur-doped carbon encapsulated bismuth sulfide core-shell structure for enhanced potassium storage performance".NANO RESEARCH (2021).