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Efficient coupling of a hierarchical V2O5@Ni3S2 hybrid nanoarray for pseudocapacitors and hydrogen production
Zhong, Xiongwei1,2; Zhang, Linfei2; Tang, Jun2; Chai, Jianwei3; Xu, Jincheng1; Cao, Lujie1,2; Yang, Mingyang1,2; Yang, Ming3; Kong, Weiguang2; Wang, Shijie3; Cheng, Hua2; Lu, Zhouguang2; Cheng, Chun2; Xu, Baomin2; Pan, Hui1
2017-09-14
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume5Issue:34Pages:17954-17962
Abstract

Hierarchical materials are a favourite for energy storage/harvesting technologies, such as supercapacitors and electrically-driven hydrogen production. In this work, we report a robust and highly active nanomaterial for pseudocapacitors and hydrogen production by growing vanadium pentoxide on the surface of nickel sulfide (denoted as V2O5@Ni3S2). V2O5@Ni3S2 shows a capacitance of up to 854 F g(-1) at a current density of 1 A g(-1) and good rate capability. The capacitance can retain ca. 60% of the initial specific capacitance even after 1000 cycles at a current density of 1 A g(-1). For the hydrogen evolution reaction (HER), the overpotential of V2O5@Ni3S2 is around 95 mV at 10 mA cm(-2). The excellent electrochemical performance of the V2O5@Ni3S2 hybrid is attributed to the synergistic effect between vanadium pentoxide and nickel sulfide for pseudocapacitors, and the V2O5@Ni3S2 interface and V-S active bonding in the hierarchical structure for the HER. This work demonstrates an effective structure design for supercapacitors with high energy density and for efficient hydrogen production with high catalytic activity by incorporating metal oxide with metal sulfide.

DOI10.1039/c7ta04755j
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000408592900025
PublisherROYAL SOC CHEMISTRY
The Source to ArticleWOS
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Cited Times [WOS]:24   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Applied Physics and Materials Engineering
Affiliation1.Univ Macau, Inst Appl Phys & Mat Engn, Macau, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.ASTAR, IMRE, 08-03,2 Fusionopolis Way, Singapore 138634, Singapore
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Zhong, Xiongwei,Zhang, Linfei,Tang, Jun,et al. Efficient coupling of a hierarchical V2O5@Ni3S2 hybrid nanoarray for pseudocapacitors and hydrogen production[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(34):17954-17962.
APA Zhong, Xiongwei.,Zhang, Linfei.,Tang, Jun.,Chai, Jianwei.,Xu, Jincheng.,...&Pan, Hui.(2017).Efficient coupling of a hierarchical V2O5@Ni3S2 hybrid nanoarray for pseudocapacitors and hydrogen production.JOURNAL OF MATERIALS CHEMISTRY A,5(34),17954-17962.
MLA Zhong, Xiongwei,et al."Efficient coupling of a hierarchical V2O5@Ni3S2 hybrid nanoarray for pseudocapacitors and hydrogen production".JOURNAL OF MATERIALS CHEMISTRY A 5.34(2017):17954-17962.
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