The electrochemical performance of ordered mesoporous carbon/nickel compounds composite material for supercapacitor
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620 (China)
A series of high performance ordered mesoporous carbon/nickel compounds composites have been synthesized by a combination of incipient wetness impregnation and hydrothermal method for the first time. X-ray diffraction (XRD), N{sub 2} adsorption/desorption isotherms and transmission electron microscopy (TEM) are used to characterize the composites derived at the hydrothermal temperature of 125, 150, 175, 200, 250, 275 and 300 {sup o}C. The formation of nanosized nickel compounds, fully inside the mesopore system, was confirmed with XRD and TEM. An N{sub 2} adsorption/desorption isotherms measurements still revealed mesoporosity for the host/guest compounds. It is noteworthy that an OMC/nickel nitrate hydroxide hydrate composite (OMCN-150) exhibits more excellent performance. Based on the various hydrothermal temperatures of the composite, the capacitance of an OMCN-150 delivering the best electrochemical performance is about 2.4 (5 mV s{sup -1}) and 1.5 (50 mV s{sup -1}) times of the pristine OMC. The capacitance retention of an OMCN-150 is 96.1%, which indicates that the electrochemical performance of the supercapacitor is improved greatly, and represents novel research and significant advances in the field of electrode composite materials for supercapacitor. -- Graphical abstract: A series of high performance nickel compound/ordered mesoporous carbon composites were synthesized by a combination of incipient wetness impregnation and hydrothermal method for the first time. Display Omitted
- OSTI ID:
- 21494149
- Journal Information:
- Journal of Solid State Chemistry, Vol. 183, Issue 12; Other Information: DOI: 10.1016/j.jssc.2010.09.043; PII: S0022-4596(10)00442-1; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ADSORPTION
CAPACITANCE
CARBON
COMPOSITE MATERIALS
DESORPTION
ELECTROCHEMISTRY
HYDRATES
HYDROTHERMAL SYNTHESIS
HYDROXIDES
NANOSTRUCTURES
NICKEL NITRATES
PERFORMANCE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
CHEMISTRY
COHERENT SCATTERING
DIFFRACTION
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
ELEMENTS
HYDROGEN COMPOUNDS
MATERIALS
MICROSCOPY
NICKEL COMPOUNDS
NITRATES
NITROGEN COMPOUNDS
NONMETALS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SORPTION
SYNTHESIS
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS