Eggshells for Energy Storage

Researchers hope to improve supercapacitors using chicken-egg shells

3 min read
Eggshells for Energy Storage
Photo: Getty Images

7 December 2012—Owners of electric cars may soon be driving on eggshells, if David Mitlin has anything to say about it.

Mitlin, a professor of chemical and materials engineering at the University of Alberta, in Edmonton, Canada, is working on a way to turn waste eggshell membranes and egg whites into materials for high-performance supercapacitors. Supercapacitors offer high power density, charging and discharging far faster than rechargeable batteries. Unfortunately, they store much less energy. Mitlin thinks the membranes inside eggshells could help crack that problem.

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Greg Mably


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