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Power Week in Review: Wireless EV Charging, E-Field Flame Shaping & Si Supercap

Researchers at Vanderbilt University have developed a supercapacitor design made out of silicon — instead of activated carbon like most commercial supercapacitors — allowing it to be built on a standard silicon chip along with other circuitry, and thus paving the way for integrated on-chip energy storage. The researchers used porous silicon coated with an atomically thin layer of graphene to create supercapacitors with energy densities significantly better than commercial supercapacitors. (See the full paper, “Surface Engineered Porous Silicon for Stable, High Performance Electrochemical Supercapacitors.”)

This graph shows the power and energy density of graphene-coated porous silicon supercapacitors compared with that of capacitors made from porous silicon alone and of activated carbon.(Source: Vanderbilt University.)
This graph shows the power and energy density of graphene-coated porous silicon supercapacitors compared with that of capacitors made from porous silicon alone and of activated carbon.
(Source: Vanderbilt University.)

Development stage company ClearSign Combustion has developed an air pollution control technology that uses a computer-controlled electric field to improve performance characteristics of industrial combustion systems anywhere there is a flame. The Electrodynamic Combustion Control technology uses electric fields to allow the control of the electrically charged molecules that are a natural product of the combustion process, enabling control of the flame shape and the transfer of heat, and suppression of the formation of pollutants at the flame source. (See figure and video below.)
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