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Hydrothermal self-assembly and supercapacitive behaviors of Co(II) ion-modified graphene aerogels in H2SO4 electrolyte
Bao Q.3; Hui K.N.4; Hui K.S.1; Wang Y.2; Hong X.3
2014
Source PublicationMaterials Research Bulletin
ISSN00255408
Volume56Pages:92-97
AbstractReduced graphene oxide (r-GO) aerogels decorated with divalent cobalt ions were synthesized via a one-pot hydrothermal self-assembly route. The interaction of Co(II) ions with 3D r-GO aerogels was investigated by spectroscopic techniques, including Raman, attenuated total reflectance infrared, and X-ray photoelectron spectroscopies. The excellent electrochemical properties of the aerogels were confirmed by cyclic voltammetry, galvanostatic charge/discharge tests, and electrochemical impedance spectroscopy in an acid electrolyte (1 M HSO). The Co(II) ion-modified r-GO aerogels can be used as high-performance hybrid supercapacitor materials with a specific capacitance of 387.2 F g at 1 A g current density and a good cycling stability without capacity decay over 1000 cycles. The mechanical integrity enhancement of the hybrid r-GO aerogel framework and the improvement in its unique capacitive performance are attributed to the efficient interconnection produced by electro-active Co(II) ions. © 2014 Elsevier Ltd.
KeywordElectrochemical measurements Energy storage Sol-gel chemistry
DOI10.1016/j.materresbull.2014.04.026
URLView the original
Language英語
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Cited Times [WOS]:8   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hanyang University
2.Institute of Oceanology Chinese Academy of Sciences
3.City University of Hong Kong
4.Pusan National University
Recommended Citation
GB/T 7714
Bao Q.,Hui K.N.,Hui K.S.,et al. Hydrothermal self-assembly and supercapacitive behaviors of Co(II) ion-modified graphene aerogels in H2SO4 electrolyte[J]. Materials Research Bulletin,2014,56:92-97.
APA Bao Q.,Hui K.N.,Hui K.S.,Wang Y.,&Hong X..(2014).Hydrothermal self-assembly and supercapacitive behaviors of Co(II) ion-modified graphene aerogels in H2SO4 electrolyte.Materials Research Bulletin,56,92-97.
MLA Bao Q.,et al."Hydrothermal self-assembly and supercapacitive behaviors of Co(II) ion-modified graphene aerogels in H2SO4 electrolyte".Materials Research Bulletin 56(2014):92-97.
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