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HomeMaterials Science ForumMaterials Science Forum Vol. 975Nickel Cobaltite Nanoneedle/Porous Graphene...

Nickel Cobaltite Nanoneedle/Porous Graphene Nanosheets Network Nanocomposite Electrodes with Ultra-High Specific Capacitance for Energy Storage Applications

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Abstract:

Nickel cobaltite has become a popular energy storage material in recent years for high performance energy storage devices because of its low lost, high electronic conductivity, high electrochemical activity and environmental benignity. Nickel cobaltite (NCO)/porous graphene nanosheets network (PG) composites were synthesized via the two-steps hydrothermal method to enhance electrochemical properties in this study. The NCO/PG composite electrode demonstrated high specific capacitance of 3965 F g^-1 at the current density of 1 A g^-1 compared with the value of NCO that capacitance is 644 F g^-1, and it maintained the 72% of the original capacitance after 3,000 charge-discharge cycles. It showed the maximum energy density of 46.3 Wh kg^-1 and maximum power density of 1450 W kg^-1. The NCO/GO composite has high potential as a psudocapacitance material for energy storage devices.

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7th Asia Conference on Mechanical and Materials Engineering

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Periodical:

Materials Science Forum (Volume 975)

Pages:

127-132

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.975.127

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Online since:

January 2020

Authors:

Chih Chieh Yang, Chia-Hong Lee, Tseung Yuen Tseng*

Keywords:

Hydrothermal Process, Porous Graphene, Pseudocapacitor, Specific Capacitance

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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