Millimeter-Long Vertically Aligned Carbon-Nanotube-Supported Co3O4 Composite Electrode for High-Performance Asymmetric Supercapacitor
Yin, Yaolong1; Xu, Yong1; Zhou, Yu1; Yan, Ya1,2; Zhan, Ke1; Yang, Junhe1; Li, Jianqiang3; Zhao, Bin1,2
2018-05-01
发表期刊CHEMELECTROCHEM
ISSN2196-0216
卷号5期号:10页码:1394-1400
摘要Cobalt oxide (Co3O4) nanoparticles uniformly anchored on vertically aligned carbon nanotube arrays (VACNTs) are synthesized by means of an effective supercritical carbon dioxide (scCO(2)) assisted impregnation followed by a thermal annealing process. Benefiting from their desirable 3D nanostructure, the Co3O4/VACNTs (CVN) composites manifest a high specific capacitance of 833Fg(-1) at a current density of 1Ag(-1) and a good rate capacity with capacitance retention of 89% even after 20-fold increase in current density. Coupled with a Fe3O4/VACNTs (FVN) anode (350Fg(-1) at 1Ag(-1)) prepared by the same method, the assembled CVN//FVN asymmetric supercapacitor (ASC) delivers a high energy density of 36Whkg(-1) (1.65mWhcm(-3)) at a power density of 0.93kWkg(-1) (0.05Wcm(-3)), and a maximum power density of 13.6kWkg(-1) (0.62Wcm(-3)) at an energy density of 10.6Whkg(-1) (0.51mWhcm(-3)). Moreover, even after 5000 charge-discharge cycles at a current density of 5Ag(-1), the ASC still retains 87% of its initial specific capacitance. The extraordinary electrochemical performance of the ASC device demonstrates the promise of our VACNTs-based pseudocapacitive electrode for future energy storage systems.
关键词Scco(2) Assisted Impregnation Asymmetric Supercapacitor Carbon Nanotubes Energy Storage Supercritical Carbon Dioxide
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/celc.201800138
收录类别SCI
语种英语
关键词[WOS]REDUCED GRAPHENE OXIDE ; ELECTROCHEMICAL CAPACITORS ; HIGH-ENERGY ; NANOPARTICLES ; NANOSHEETS ; ARRAYS ; STORAGE ; 3D ; FABRICATION ; DEPOSITION
WOS研究方向Electrochemistry
WOS类目Electrochemistry
项目资助者Shanghai Science and Technology Commission(18060502300) ; National Natural Science Foundation of China(51605293 ; Natural Science Foundation of Shanghai(16ZR1423500) ; Shanghai Pujiang Program(17PJ1406900) ; Program for Associate Professor of Special Appointment (Young Eastern Scholar) at Shanghai Institutions of Higher Learning(QD0126013) ; 51702213)
WOS记录号WOS:000431974500009
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24431
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Univ Shanghai Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China
2.Shanghai Innovat Inst Mat, Shanghai 200444, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
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Yin, Yaolong,Xu, Yong,Zhou, Yu,et al. Millimeter-Long Vertically Aligned Carbon-Nanotube-Supported Co3O4 Composite Electrode for High-Performance Asymmetric Supercapacitor[J]. CHEMELECTROCHEM,2018,5(10):1394-1400.
APA Yin, Yaolong.,Xu, Yong.,Zhou, Yu.,Yan, Ya.,Zhan, Ke.,...&Zhao, Bin.(2018).Millimeter-Long Vertically Aligned Carbon-Nanotube-Supported Co3O4 Composite Electrode for High-Performance Asymmetric Supercapacitor.CHEMELECTROCHEM,5(10),1394-1400.
MLA Yin, Yaolong,et al."Millimeter-Long Vertically Aligned Carbon-Nanotube-Supported Co3O4 Composite Electrode for High-Performance Asymmetric Supercapacitor".CHEMELECTROCHEM 5.10(2018):1394-1400.
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