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      Flexible solid-state supercapacitors: design, fabrication and applications

      , , , ,
      Energy & Environmental Science
      Royal Society of Chemistry (RSC)

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          What Are Batteries, Fuel Cells, and Supercapacitors?

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            Laser scribing of high-performance and flexible graphene-based electrochemical capacitors.

            Although electrochemical capacitors (ECs), also known as supercapacitors or ultracapacitors, charge and discharge faster than batteries, they are still limited by low energy densities and slow rate capabilities. We used a standard LightScribe DVD optical drive to do the direct laser reduction of graphite oxide films to graphene. The produced films are mechanically robust, show high electrical conductivity (1738 siemens per meter) and specific surface area (1520 square meters per gram), and can thus be used directly as EC electrodes without the need for binders or current collectors, as is the case for conventional ECs. Devices made with these electrodes exhibit ultrahigh energy density values in different electrolytes while maintaining the high power density and excellent cycle stability of ECs. Moreover, these ECs maintain excellent electrochemical attributes under high mechanical stress and thus hold promise for high-power, flexible electronics.
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              Materials science. Electrochemical capacitors for energy management.

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                Author and article information

                Journal
                EESNBY
                Energy & Environmental Science
                Energy Environ. Sci.
                Royal Society of Chemistry (RSC)
                1754-5692
                1754-5706
                2014
                2014
                : 7
                : 7
                : 2160
                Article
                10.1039/c4ee00960f
                9b654d8d-dc75-4f41-95a3-2e5151d83d24
                © 2014
                History

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