Synergistic Regulation of Polysulfides Conversion and Deposition by MOF-Derived Hierarchically Ordered Carbonaceous Composite for High-Energy Lithium-Sulfur Batteries

doi:10.1002/adfm.201900875

	Synergistic Regulation of Polysulfides Conversion and Deposition by MOF-Derived Hierarchically Ordered Carbonaceous Composite for High-Energy Lithium-Sulfur Batteries
	Fang, Daliang 1,2; Wang, Yanlei 1,2; Qian, Cheng 3; Liu, Xizheng 4; Wang, Xi 5,6,7; Chen, Shimou 1,2; Zhang, Suojiang 1,2
刊名	ADVANCED FUNCTIONAL MATERIALS
	2019-05-09
卷号	29 期号:19 页码:11
关键词	3D Li2S deposition carbonaceous composite high energy lithium-sulfur batteries metal-organic frameworks
ISSN号	1616-301X
DOI	10.1002/adfm.201900875
英文摘要	To achieve a high sulfur loading is critical for high-energy lithium-sulfur batteries. However, high sulfur loading, especially at a low electrolyte/sulfur ratio (E/S), usually causes low sulfur utilization, mainly caused by the slow redox kinetics of polysulfides and the passivation of the discharge product, poor electrically/ionically conducting Li2S. Herein, by using cobalt-based metal organic frameworks (Co-MOFs) as precursors, a Co, N-doped carbonaceous composite (Co, N-CNTs (carbon nanotubes)-CNS (carbon nanosheet)/CFC (carbon fiber cloth)) is fabricated with hierarchically ordered structure, which consists of a free-standing 3D carbon fiber skeleton decorated with a vertical 2D carbon nanosheets array rooted by interwoven 1D CNTs. As an effective polysulfides host, the hierarchically ordered 3D conductive network with abundant active sites and voids can effectively trap polysulfides and provide fast electron/ions pathways to convert them. In addition, Co and N heteroatoms can strengthen the interaction with polysulfides and accelerate its reaction kinetics. More importantly, the interwoven CNTs with Co, N-doping can induce 3D Li2S deposition instead of conventional 2D deposition, which benefits improving sulfur utilization. Therefore, for Co, N-CNTs-CNS/CFC electrodes, even at a high sulfur loading of 10.20 mg cm(-2) with a low E/S of 6.94, a high reversible areal capacity of 7.42 mAh cm(-2) can be achieved with excellent cycling stability.
资助项目	National Key Projects for Fundamental Research and Development of China[2016YFB0100100] ; National Natural Science Foundation of China[21808220] ; Beijing Municipal Science and Technology Project[D171100005617001] ; Beijing Natural Science Foundation[2184124] ; Chinese Academy of Sciences/State Administration of Foreign Experts Affairs International Partnership Program for Creative Research Teams[20140491518]
WOS关键词	LI-S BATTERIES ; CATALYTIC GROWTH ; POROUS CARBON ; HIGH-CAPACITY ; PERFORMANCE ; ELECTRODE ; REDOX ; CATHODE ; FACILE ; CLOTH
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000471333600021
资助机构	National Key Projects for Fundamental Research and Development of China ; National Natural Science Foundation of China ; Beijing Municipal Science and Technology Project ; Beijing Natural Science Foundation ; Chinese Academy of Sciences/State Administration of Foreign Experts Affairs International Partnership Program for Creative Research Teams
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/29963]
专题	中国科学院过程工程研究所
通讯作者	Chen, Shimou; Zhang, Suojiang
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquid Clean Proc, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Engn, Beijing 100049, Peoples R China 3.Northwest A&F Univ, Minist Educ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Yangling 712100, Shaanxi, Peoples R China 4.Tianjin Univ Technol, Sch Mat Sci & Engn, Inst New Energy Mat & Low Carbon Technol, Tianjin Key Lab Adv Funct Porous Mat, Tianjin 300384, Peoples R China 5.Beijing Jiaotong Univ, Sch Sci, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China 6.Tianjin Univ, Dept Chem, Tianjin Key Lab Mol Optoelect Sci, Tianjin 300072, Peoples R China 7.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Fang, Daliang,Wang, Yanlei,Qian, Cheng,et al. Synergistic Regulation of Polysulfides Conversion and Deposition by MOF-Derived Hierarchically Ordered Carbonaceous Composite for High-Energy Lithium-Sulfur Batteries[J]. ADVANCED FUNCTIONAL MATERIALS,2019,29(19):11.
APA	Fang, Daliang.,Wang, Yanlei.,Qian, Cheng.,Liu, Xizheng.,Wang, Xi.,...&Zhang, Suojiang.(2019).Synergistic Regulation of Polysulfides Conversion and Deposition by MOF-Derived Hierarchically Ordered Carbonaceous Composite for High-Energy Lithium-Sulfur Batteries.ADVANCED FUNCTIONAL MATERIALS,29(19),11.
MLA	Fang, Daliang,et al."Synergistic Regulation of Polysulfides Conversion and Deposition by MOF-Derived Hierarchically Ordered Carbonaceous Composite for High-Energy Lithium-Sulfur Batteries".ADVANCED FUNCTIONAL MATERIALS 29.19(2019):11.