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A Novel Electrode Material of NiO Prepared by Facile Hydrothermal Method for Electrochemical Capacitor Application

Author:
Wu, Qingfeng   Hu, Zhonghua   Liu, Yafei  


Journal:
Journal of Materials Engineering and Performance


Issue Date:
2013


Abstract(summary):

NiO nanosheets were prepared by a facile and template-free hydrothermal process using l-arginine as the alternative precipitator and nickel sulfate as the nickel source. The as-synthesized materials were characterized by x-ray diffraction, Field emission scanning electron microscopy, N 2 adsorption-desorption, and the electrochemical workstation. The results show that the novel NiO material possesses a large surface area of 121 m 2/g and binary pore structure of micropore and mesopore. The electrochemical tests show that the NiO electrode exhibits a specific capacitance as large as 300 F/g at the current density of 1 A/g and the specific capacitance retention can maintain 84% after 500 cycles at the current density of 15 A/g in 6 mol/L KOH.


Page:
2398-2402


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