Microbial batteries with re-oxidizable solid-state electrodes for conversion of chemical potential energy into electrical energy
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United States of America Patent
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Nov 29, 2016
Grant Date -
Jul 30, 2015
app pub date -
Oct 2, 2013
filing date -
Oct 2, 2012
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Abstract
A microbial battery is provided. At the anode, microbial activity provides electrons to an external circuit. The cathode is a solid state composition capable of receiving the electrons from the external circuit and changing from an oxidized cathode composition to a reduced cathode composition. Thus, no external source of oxygen is needed at the cathode, unlike conventional microbial fuel cells. The cathode can be removed from the microbial battery, re-oxidized in a separate oxidation process, and then replaced in the microbial battery. This regeneration of the cathode amounts to recharging the microbial battery.
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