Improved Electrodes: Electrodeposition Process Creates Nanoporous Structures for Improved Fuel Cells, Batteries & Sensor
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Taking advantage of an electrochemical phenomenon that had previously been considered a nuisance, researchers at the Georgia Institute of Technology have developed a new class of three-dimensional nanoporous electrodes that could boost the performance of fuel cells, batteries and sensors.By generating hydrogen bubbles during the deposition of copper, tin or a copper-tin alloy onto a copper substrate, the researchers create self-supported metallic foam electrodes that contain a complex network of interconnected pores. Because the bubbles expand as they move away from the substrate, they create passageways through the deposited metal that become wider the closer they get to the outside of the electrode.
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