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Boosting the safety and energy density of molybdenum disulfide/carbon nanotubes based solid-state sodium-ion supercapacitors with an ionogel electrolyte
Xing, C. X.1; Zhang, H. T.1,2; Pan, S. S.1,2; Yao, M.1,2; Li, B. S.1,2; Zhang, Y. Q.1; Zhang, S. J.1,2
2020-12-01
Source PublicationMATERIALS TODAY ENERGY
ISSN2468-6069
Volume18Pages:11
AbstractSolid-state energy storage devices exhibit superior safety and energy density. However, their practical applications are still limited by the lower conductivity and ion transfer rate. The performances of sodium ion capacitors (SICs) are determined by the combination of device configuration, electrodes, and electrolyte. Therefore, the configuration optimization of solid-state SICs (SS-SICs) is critically important. Here, the fabrication of a safer high-energy-density SS-SIC is demonstrated by using flake-shaped molybdenum disulfide/carbon nanotube nanohybrids and sodium-ion ionogel electrolytes. The microstructures of nanohybrids could support shortened migration paths for sodium ions and can buffer the volume change of electrochemical reactions. Moreover, the optimized sodium-ion ionogel electrolyte was found to exhibit improved flame-retardant ability, accelerated ionic conductivity, and excellent sodium migration rate. Electrochemical analysis and molecular simulation methods of energy storage behaviors were used to uncover the origin of improved performances at higher temperatures. The optimized SS-SIC could deliver a high energy density up to 115.7 W h kg(-1) at 70 degrees C and excellent durability with 81% retention after 8000 cycles. Therefore, a new energy supply device is provided for equipment operating at higher temperatures. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordEnergy storage mechanism Sodium-ion capacitors Solid-state ionogel electrolyte Non-combustible High temperature device
DOI10.1016/j.mtener.2020.100527
Language英语
WOS KeywordPOLYMER ELECTROLYTES ; LIQUID ELECTROLYTES ; HARD CARBON ; LITHIUM ; MOS2 ; BATTERIES ; CAPACITOR ; STORAGE ; SURFACE ; LAYER
Funding ProjectNational Key Research and Development Program of China[2016YFB0100303] ; Major Program of National Natural Science Foundation of China[21890762] ; National Natural Science Foundation of China[21878308] ; K.C.Wong Education Foundation
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationNational Key Research and Development Program of China ; Major Program of National Natural Science Foundation of China ; National Natural Science Foundation of China ; K.C.Wong Education Foundation
WOS IDWOS:000601397100011
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42905
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, H. T.; Zhang, S. J.
Affiliation1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lib Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Dept Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
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Xing, C. X.,Zhang, H. T.,Pan, S. S.,et al. Boosting the safety and energy density of molybdenum disulfide/carbon nanotubes based solid-state sodium-ion supercapacitors with an ionogel electrolyte[J]. MATERIALS TODAY ENERGY,2020,18:11.
APA Xing, C. X..,Zhang, H. T..,Pan, S. S..,Yao, M..,Li, B. S..,...&Zhang, S. J..(2020).Boosting the safety and energy density of molybdenum disulfide/carbon nanotubes based solid-state sodium-ion supercapacitors with an ionogel electrolyte.MATERIALS TODAY ENERGY,18,11.
MLA Xing, C. X.,et al."Boosting the safety and energy density of molybdenum disulfide/carbon nanotubes based solid-state sodium-ion supercapacitors with an ionogel electrolyte".MATERIALS TODAY ENERGY 18(2020):11.
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