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Layered double hydroxides with larger interlayer distance for enhanced pseudocapacitance
Xiao, YH; Su, DC; Wang, XZ; Wu, SD; Zhou, LM; Fang, SM; Li, F; Fang, SM (reprint author), Zhengzhou Univ Light Ind, Key Lab Surface & Interface Sci & Technol, Zhengzhou 450002, Henan, Peoples R China.; Li, F (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
2018-02-01
Source PublicationSCIENCE CHINA-MATERIALS
ISSN2095-8226
Volume61Issue:2Pages:263-272
AbstractThe interlayer space of the layered materials is not always the electrochemical active area for contributing to the pseudocapacitive process. To our knowledge, few efforts have been devoted to investigating the effect of interlayer distance of layered double hydroxides (LDHs) on pseudocapacitors. Here, we obtained the CoAl-LDH with different interlayer distance via the reaction in aqueous media hydrothermally. Electrochemical characterization reveals that the CoAl(DS-(dodecyl sulfate))-LDHs with an interlayer distance of 2.58 nm can deliver higher specific capacitance of 1481.7 F g(-1) than CoAl(SO42-)-LDH (0.87 nm, 1252.7 F g(-1)) and CoAl (CO32-)-LDH (0.76 nm, 1149.2 F g(-1)) at a discharge current density of 1 A g(-1). An asymmetric supercapacitor with the CoAl(DS-)-LDHs parallel to activated carbon also shows a better electrochemical performance, including a high energy density of 54.2 W h kg(-1) at a power density of 0.9 kW kg(-1) and a longterm stability, in comparison with CoAl(SO42-)-LDH and CoAl (CO32-)-LDH parallel to activated carbon.; The interlayer space of the layered materials is not always the electrochemical active area for contributing to the pseudocapacitive process. To our knowledge, few efforts have been devoted to investigating the effect of interlayer distance of layered double hydroxides (LDHs) on pseudocapacitors. Here, we obtained the CoAl-LDH with different interlayer distance via the reaction in aqueous media hydrothermally. Electrochemical characterization reveals that the CoAl(DS-(dodecyl sulfate))-LDHs with an interlayer distance of 2.58 nm can deliver higher specific capacitance of 1481.7 F g(-1) than CoAl(SO42-)-LDH (0.87 nm, 1252.7 F g(-1)) and CoAl (CO32-)-LDH (0.76 nm, 1149.2 F g(-1)) at a discharge current density of 1 A g(-1). An asymmetric supercapacitor with the CoAl(DS-)-LDHs parallel to activated carbon also shows a better electrochemical performance, including a high energy density of 54.2 W h kg(-1) at a power density of 0.9 kW kg(-1) and a longterm stability, in comparison with CoAl(SO42-)-LDH and CoAl (CO32-)-LDH parallel to activated carbon.
description.department[xiao, yuanhua ; su, dangcheng ; wang, xuezhao ; wu, shide ; zhou, liming ; fang, shaoming] zhengzhou univ light ind, key lab surface & interface sci & technol, zhengzhou 450002, henan, peoples r china ; [li, feng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china
KeywordSupercapacitor Electrode Materials Reduced Graphene Oxide Asymmetric Supercapacitors High-performance Electrochemical Capacitors Energy Density Activated Carbon Facile Synthesis Nanocomposites Nanoparticles
Subject AreaMaterials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [21501152, 21571159, 21671178, 21441003, 51521091, 51525206]; China Postdoctoral Science Foundation [2017M611282]; Program for Changjiang Scholars and Innovative Research Team in University [IRT15R61]; Ministry of Science and Technology of China [2016YFA0200100, 2016YBF0100100]; Foundation of Zhengzhou University of Light Industry [2014BSJJ054]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09010104]; Projects for Public Entrepreneurship and Public Innovation of ZZULI [2017ZCKJ215]; Key Program of Henan Province for Science and Technology [162102210212]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79526
Collection中国科学院金属研究所
Corresponding AuthorFang, SM (reprint author), Zhengzhou Univ Light Ind, Key Lab Surface & Interface Sci & Technol, Zhengzhou 450002, Henan, Peoples R China.; Li, F (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Xiao, YH,Su, DC,Wang, XZ,et al. Layered double hydroxides with larger interlayer distance for enhanced pseudocapacitance[J]. SCIENCE CHINA-MATERIALS,2018,61(2):263-272.
APA Xiao, YH.,Su, DC.,Wang, XZ.,Wu, SD.,Zhou, LM.,...&Li, F .(2018).Layered double hydroxides with larger interlayer distance for enhanced pseudocapacitance.SCIENCE CHINA-MATERIALS,61(2),263-272.
MLA Xiao, YH,et al."Layered double hydroxides with larger interlayer distance for enhanced pseudocapacitance".SCIENCE CHINA-MATERIALS 61.2(2018):263-272.
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