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        Graphene supercapacitor sets energy storage record

        Graphene continues to live up to its reputation as one of the most useful nanomaterials for near-term applications, this time in the energy storage arena. From EETimes “Graphene supercapacitor breaks storage record“:

        Researchers in the US have made a graphene-based supercapacitor that can store as much energy per unit mass as nickel metal hydride batteries—but unlike batteries, it can be charged or discharged in just minutes or even seconds. The new device has a specific energy density of 85.6 Wh/kg at room temperature and 136 Wh/kg at 80 °C. These are the highest ever values for “electric double layer” supercapacitors based on carbon nanomaterials.

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