CAS OpenIR
A high-energy, low-temperature lithium-sulfur flow battery enabled by an amphiphilic-functionalized suspension catholyte
Xu, S.1,2,3; Zhang, L.1,3; Zhang, H.1,3; Wei, M.2; Guo, X.2; Zhang, S.1,3
2020-12-01
Source PublicationMATERIALS TODAY ENERGY
ISSN2468-6069
Volume18Pages:8
AbstractLithium-sulfur flow batteries show great superiority in large-scale energy storage. However, the sulfur utilization in high sulfur loading suspension catholyte declines sharply due to the insulating nature of sulfur/sulfides. Adding more carbon conductive materials can augment sulfur utilization, while high carbon content limits the specific energy and meanwhile increases the viscosity of suspension catholyte. In this work, a high-energy, low-temperature sulfur suspension catholyte is designed and prepared based on polyvinylpyrrolidone (PVP) functionalized Sulfur-Ketjenblack-Graphene composite (S-KB-G@P). Amphiphilic PVP is anchored onto the surface of graphene to enhance contact between polar sulfur species and conductive network constructed by nonpolar graphene and KB, and then facilitate the redox reaction of sulfur catholyte. Meanwhile, anchored PVP endows S-KB-G nanoparticles with well-dispersed characteristics, which reduces the viscosity and accelerates the ion transfer in highly concentrated S-KBG@P suspension. The S-KB-G@P suspension catholyte exhibits high sulfur utilization of 89.5% and volumetric energy of 718 W h L-1; moreover, high energy density of 445 W h L-1 and excellent cycle stability are achieved at -30 degrees C. Verified in a laboratory flow cell, the strategy offers a new opportunity to develop high-energy flow batteries by amphiphilic functionalization in cold-climate region. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordFlow battery Sulfur utilization Amphiphilic High energy density Low temperature battery
DOI10.1016/j.mtener.2020.100495
Language英语
WOS KeywordCARBON NANOTUBES ; METAL-FREE ; ONE-STEP ; PERFORMANCE ; ELECTROLYTE ; CHEMISTRY ; CATHODE ; STORAGE ; DENSITY ; SURFACE
Funding ProjectNational Key Research and Development Program of China[2019YFA0705600] ; National Natural Science Foundation of China[21706262] ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China[21921005] ; Beijing Natural Science Foundation[L172045] ; Key Scientific and Technological Project of Henan Province[172102210082] ; Aeronautical Science Foundation of China[2016ZF55015]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Key Scientific and Technological Project of Henan Province ; Aeronautical Science Foundation of China
WOS IDWOS:000603382600013
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/43063
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, S.
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, CAS Key Lab Green Proc & Engn,Beijing Key Lab Ion, Beijing 100190, Peoples R China
2.Zhengzhou Univ Aeronaut, Sch Mat Sci & Engn, Henan Key Lab Aeronaut Mat & Applicat Technol, Zhengzhou 450046, Peoples R China
3.Zhengzhou Inst Emerging Ind Technol, Zhengzhou 450003, Peoples R China
Recommended Citation
GB/T 7714
Xu, S.,Zhang, L.,Zhang, H.,et al. A high-energy, low-temperature lithium-sulfur flow battery enabled by an amphiphilic-functionalized suspension catholyte[J]. MATERIALS TODAY ENERGY,2020,18:8.
APA Xu, S.,Zhang, L.,Zhang, H.,Wei, M.,Guo, X.,&Zhang, S..(2020).A high-energy, low-temperature lithium-sulfur flow battery enabled by an amphiphilic-functionalized suspension catholyte.MATERIALS TODAY ENERGY,18,8.
MLA Xu, S.,et al."A high-energy, low-temperature lithium-sulfur flow battery enabled by an amphiphilic-functionalized suspension catholyte".MATERIALS TODAY ENERGY 18(2020):8.
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