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Candy Cotton

New supercapacitor technologies

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We develop innovative nano-porous materials and assemblies employed in varied sensing, optical, and electronic applications. Specifically, we introduced technologies for creating conductive gold nanopatterns through self-reduction of Au-thiocyanate. We have demonstrated new porous electrodes and supercapacitors for high frequency applications and high power/energy densities. Diverse sensor designs, operating through optical and capacitive transduction mechanisms, have been developed.


Organic and metallic supercapacitor electrodes and full devices have been fabricated, aimed at addressing the main challenges in the field: attaining high power density and energy density, and operating in high frequencies. We demonstrated varied electrode designs exhibiting exceptional electrochemical properties; in particular we showed that, contrary to the accepted paradigm, the rate of redox reactions at the electrode interface is not a limiting factor for achieving high frequency capacitive performance.


  • Flexible conductive surfaces via "bottom-up" gold nanotechnology, T.P. Vinod and Raz Jelinek, ACS Applied Materials and Interfaces, 2014, 6, 3341-3346.


We have developed varied sensor technologies, operating via different transduction mechanisms (optical, luminescent, capacitive) and aimed at different targets. Specifically, we designed gas sensors, demonstrating high sensitivity and selectivity towards specific volatile organic compounds (VOCs) and organophosphates. Optical sensors for pollutants in water have been developed. Innovative strain sensors have been also fabricated through different chemical platforms.


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