A Dirt-Bag Fuel Cell
Sunday, January 18th, 2009Technology Review: Blogs: TR Editors’ blog: A Dirt-Bag Fuel Cell
A simple microbial fuel cell could offer reliable power in the developing world.
Wednesday, January 14, 2009
By Kristina Grifantini
A startup that is striving to bring energy to countries that lack reliable power has developed a remarkably simple new microbial fuel-cell design: grain bags, stuffed with metal and dirt. Lebônê, a startup based at Harvard University, has already shown how to make fuel cells from buckets full of wastewater, with a graphite cloth as the anode and chicken wire as the cathode. In this setup, bacteria extract electrons from organic waste at the anode to generate small amounts of power–enough to charge, say, a flashlight or cell phone.
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Emerging Tech for Energy, Sustainable Energy