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"Drexel University research combining the best features of batteries and supercapacitors could lead to a more stable, greener energy grid (Photo: &lt;a href=\"http://www.shutterstock.com/similar-99064142/stock-vector-vector-illustration-of-green-battery-icon-for-web-design-isolated-on-the-white-background.html#id=98311991&amp;src=9d5ee815a13fdf98e85591fabf65f1ab-1-26\" target=\"_blank\"&gt;Shutterstock&lt;/a&gt;)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/electrochemical-flow-capacitor/23298/>