UM
An asymmetric supercapacitor with excellent cycling performance realized by hierarchical porous NiGa2O4 nanosheets
Liu, Shude; Hui, Kwan San; Hui, Kwun Nam; Li, Hai-Feng; Ng, Kar Wei; Xu, Jincheng; Tang, Zikang; Jun, Seong Chan
2017-09-28
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume5Issue:36Pages:19046-19053
AbstractRational design of the composition and electrochemically favorable structural configuration of electrode materials are highly required to develop high-performance supercapacitors. Here, we report our findings on the design of interconnected NiGa2O4 nanosheets as advanced cathode electrodes for supercapacitors. Rietveld refinement analysis demonstrates that the incorporation of Ga into NiO leads to a larger cubic lattice parameter that promotes faster charge-transfer kinetics, enabling significantly improved electrochemical performance. The NiGa2O4 electrode delivers a specific capacitance of 1508 F g(-1) at a current density of 1 A g(-1) with a capacitance retention of 63.7% at 20 A g(-1), together with excellent cycling stability after 10 000 charge-discharge cycles (capacitance retention of 102.4%). An asymmetric supercapacitor device was assembled by using NiGa2O4 and Fe2O3 as cathode and anode electrodes, respectively. The ASC delivers a high energy density of 45.2 W h kg(-1) at a power density of 1600 W kg(-1) with exceptional cycling stability (94.3% cell capacitance retention after 10 000 cycles). These results suggest that NiGa2O4 can serve as a new class cathode material for advanced electrochemical energy storage applications.
DOI10.1039/c7ta05493a
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:000411232100014
PublisherROYAL SOC CHEMISTRY
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:24   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Liu, Shude,Hui, Kwan San,Hui, Kwun Nam,et al. An asymmetric supercapacitor with excellent cycling performance realized by hierarchical porous NiGa2O4 nanosheets[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(36):19046-19053.
APA Liu, Shude.,Hui, Kwan San.,Hui, Kwun Nam.,Li, Hai-Feng.,Ng, Kar Wei.,...&Jun, Seong Chan.(2017).An asymmetric supercapacitor with excellent cycling performance realized by hierarchical porous NiGa2O4 nanosheets.JOURNAL OF MATERIALS CHEMISTRY A,5(36),19046-19053.
MLA Liu, Shude,et al."An asymmetric supercapacitor with excellent cycling performance realized by hierarchical porous NiGa2O4 nanosheets".JOURNAL OF MATERIALS CHEMISTRY A 5.36(2017):19046-19053.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Shude]'s Articles
[Hui, Kwan San]'s Articles
[Hui, Kwun Nam]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Shude]'s Articles
[Hui, Kwan San]'s Articles
[Hui, Kwun Nam]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Shude]'s Articles
[Hui, Kwan San]'s Articles
[Hui, Kwun Nam]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.