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Ultrahigh energy density and stable supercapacitor with 2D NiCoAl Layered double hydroxide
Xiao, Yuanhua; Su, Dangcheng; Wang, Xuezhao; Wu, Shide; Zhou, Liming; Sun, Zhenhua; Wang, Zhenxing; Fang, Shaoming; Li, Feng; Xiao, YH; Fang, SM (reprint author), Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Key Lab Surface & Interface Sci & Technol, Zhengzhou 450002, Henan, Peoples R China.; Li, F (reprint author), Univ Sci & Technol China, Sch Mat Sci & Engn, Chinese Acad Sci, Shenyang Natl Lab Mat Sci,Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
2017-11-01
Source PublicationPERGAMON-ELSEVIER SCIENCE LTD
ISSN0013-4686
Volume253Pages:324-332
AbstractNiCoAl layered double hydroxides (NiCoAl-LDHs) with different morphology, structure, size and pseudocapacior properties have been prepared by tuning the ratio of metallic elements via a hydrothermal method. The optimized element proportion of 2D NiCo2Al-LDH consisting of hexagonal nanosheets delivers a significantly enhanced specific capacitance 2369.4 F g(-1) at a current density of 1 A g(-1). A circle-like growth mechanism is proposed to explain the formation of the 2D NiCo2Al-LDH structures. Its 2D structure and the synergistic effect of three metallic elements assure its high electrochemical performance. An asymmetric supercapacitor (ASC) based on NiCo2Al-LDH exhibits an ultra-high energy density of 91.0 Wh kg(-1) at a power density of 758.2 W kg(-1) as well as long-term stability (92% of its initial capacitance retention at 8 A g(-1) over 5000 cycles), outperforming most of LDH and metal oxides ASCs. (C) 2017 Elsevier Ltd. All rights reserved.; NiCoAl layered double hydroxides (NiCoAl-LDHs) with different morphology, structure, size and pseudocapacior properties have been prepared by tuning the ratio of metallic elements via a hydrothermal method. The optimized element proportion of 2D NiCo2Al-LDH consisting of hexagonal nanosheets delivers a significantly enhanced specific capacitance 2369.4 F g(-1) at a current density of 1 A g(-1). A circle-like growth mechanism is proposed to explain the formation of the 2D NiCo2Al-LDH structures. Its 2D structure and the synergistic effect of three metallic elements assure its high electrochemical performance. An asymmetric supercapacitor (ASC) based on NiCo2Al-LDH exhibits an ultra-high energy density of 91.0 Wh kg(-1) at a power density of 758.2 W kg(-1) as well as long-term stability (92% of its initial capacitance retention at 8 A g(-1) over 5000 cycles), outperforming most of LDH and metal oxides ASCs. (C) 2017 Elsevier Ltd. All rights reserved.
description.department[xiao, yuanhua ; su, dangcheng ; wang, xuezhao ; wu, shide ; zhou, liming ; fang, shaoming] zhengzhou univ light ind, sch mat & chem engn, key lab surface & interface sci & technol, zhengzhou 450002, henan, peoples r china ; [sun, zhenhua ; wang, zhenxing ; li, feng] univ sci & technol china, sch mat sci & engn, chinese acad sci, shenyang natl lab mat sci,inst met res, shenyang 110016, liaoning, peoples r china
KeywordNicoal-ldh 2d Layer Double Hydroxides Hydrothermal Asymmetric Supercapacitors
Subject AreaElectrochemistry
Funding OrganizationNational Natural Science Foundation of China [NSFC. 21501152, 21571159, 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 Henan Province science and technology cooperation [142106000050]; Key Program of Henan Province for Science and Technology [132102210424]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79017
Collection中国科学院金属研究所
Corresponding AuthorXiao, YH; Fang, SM (reprint author), Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Key Lab Surface & Interface Sci & Technol, Zhengzhou 450002, Henan, Peoples R China.; Li, F (reprint author), Univ Sci & Technol China, Sch Mat Sci & Engn, Chinese Acad Sci, Shenyang Natl Lab Mat Sci,Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Xiao, Yuanhua,Su, Dangcheng,Wang, Xuezhao,et al. Ultrahigh energy density and stable supercapacitor with 2D NiCoAl Layered double hydroxide[J]. PERGAMON-ELSEVIER SCIENCE LTD,2017,253:324-332.
APA Xiao, Yuanhua.,Su, Dangcheng.,Wang, Xuezhao.,Wu, Shide.,Zhou, Liming.,...&Li, F .(2017).Ultrahigh energy density and stable supercapacitor with 2D NiCoAl Layered double hydroxide.PERGAMON-ELSEVIER SCIENCE LTD,253,324-332.
MLA Xiao, Yuanhua,et al."Ultrahigh energy density and stable supercapacitor with 2D NiCoAl Layered double hydroxide".PERGAMON-ELSEVIER SCIENCE LTD 253(2017):324-332.
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