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Solvothermal synthesis of pompon-like nickel-cobalt hydroxide/graphene oxide composite for high-performance supercapacitor application.
- Source :
-
Colloids & Surfaces A: Physicochemical & Engineering Aspects . Jul2018, Vol. 549, p76-85. 10p. - Publication Year :
- 2018
-
Abstract
- Novel pompon-like nickel-cobalt double hydroxide/graphene oxide (Ni(OH) 2 /Co(OH) 2 /GO) composites were successfully synthesized via a simple one-step solvothermal process. Their structure, morphology, surface and electrochemical properties were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD), electrochemical impedance spectroscopy (EIS) and galvanostatic charge/discharge(GCD) curves. The composite electrodes showed typical pseudocapacitance performances. When addition amount of graphene oxide was 10mg, resulted composite exhibited a high specific capacitance (2050.6 F g −1 at 1 A g −1 ) and good cycling stability with a capacitance retention of 84% after 1000 cycles. Appropriate amount of graphene oxide not only served as a structural director but also enhanced the conductivity and stability of the resulted composite. The attractive performances and facile fabrication made the prepared Ni(OH) 2 /Co(OH) 2 /GO composite become a promising candidate for low-cost high-performance energy storage device. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09277757
- Volume :
- 549
- Database :
- Academic Search Index
- Journal :
- Colloids & Surfaces A: Physicochemical & Engineering Aspects
- Publication Type :
- Academic Journal
- Accession number :
- 129372949
- Full Text :
- https://doi.org/10.1016/j.colsurfa.2018.04.011