<story><title>MIT students develop liquid fuel for electric cars</title><url>http://i.autoblog.com/2011/06/08/mit-students-develop-liquid-fuel-for-electric-cars/</url></story><parent_chain></parent_chain><comment><author>jws</author><text>The highest energy density listed for the electrolytes on the wikipedia page for flow batteries is 75 watt hours/kg, that is about 0.25Mj/kg. Gasoline is 42Mj/kg.&lt;p&gt;The original MIT release claims a 10 fold improvement in energy densities over existing flow batteries, but that is still more than an order of magnitude worse than the incumbent fuel.</text></comment>
<story><title>MIT students develop liquid fuel for electric cars</title><url>http://i.autoblog.com/2011/06/08/mit-students-develop-liquid-fuel-for-electric-cars/</url></story><parent_chain></parent_chain><comment><author>ender7</author><text>Original article: &lt;a href=&quot;http://web.mit.edu/newsoffice/2011/flow-batteries-0606.html&quot; rel=&quot;nofollow&quot;&gt;http://web.mit.edu/newsoffice/2011/flow-batteries-0606.html&lt;/a&gt;</text></comment>