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

文献类型：期刊论文

作者Fang, Daliang1,2; Wang, Yanlei1,2; Qian, Cheng3; Liu, Xizheng4; Wang, Xi5,6,7; Chen, Shimou1,2; Zhang, Suojiang1,2
刊名ADVANCED FUNCTIONAL MATERIALS
出版日期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
DOI10.1002/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.
WOS关键词LI-S BATTERIES ; CATALYTIC GROWTH ; POROUS CARBON ; HIGH-CAPACITY ; PERFORMANCE ; ELECTRODE ; REDOX ; CATHODE ; FACILE ; CLOTH
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研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000471333600021
出版者WILEY-V C H VERLAG GMBH
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
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.

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来源：过程工程研究所

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