1. Nickel foam based polypyrrole–Ag composite film: a new route toward stable electrodes for supercapacitors.
- Author
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Wei, Jiatong, Xing, Guozhong, Gao, Li, Suo, Hui, He, Xinping, Zhao, Chun, Li, Sean, and Xing, Shuangxi
- Subjects
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PYRROLE derivatives , *COMPOSITE materials research , *SILVER nitrate , *ELECTRODES , *OXIDATION-reduction reaction - Abstract
Polypyrrole (PPy)–Ag composites have been directly deposited on a nickel foam via the redox reaction between pyrrole and silver nitrate. As a catalyst, the nickel foam was able to accelerate the redox reaction and lead to the formation of PPy–Ag composites, which shows a strong adhesive force to the substrate. The electrochemical properties of the PPy–Ag–nickel foam electrode were systematically investigated by using cyclic voltammetry, galvanostatic charge–discharge and cycle stability measurements in 0.5 M K2SO4 electrolyte. The redox performance properties, good charge–discharge stability and high specific capacitance of 493 F g−1 at a current density of 1 A g−1 demonstrated the appropriate application of the PPy–Ag–nickel foam electrode for the high energy density supercapacitors. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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