Chemical Engineering Researchers Create Nature-Inspired 3D-Printed Battery Components
Researchers in the Department of Chemical Engineering have developed a new 3D-printed electrode design for redox flow batteries, a promising technology for storing energy generated by wind and solar power. Their work shows how carefully designed internal structures can help battery liquids move more effectively through the system while reducing the energy needed to pump the liquid.
Led by Professor Maxime van der Heijden, the research team created porous electrodes using 3D printing. The goal was to improve what engineers call mass transport, the movement of molecules in the battery liquid to the places where energy-storing reactions occur.
Redox flow batteries work differently from the lithium-ion batteries found in phones and electric vehicles. Instead of storing energy in solid materials, they store energy in liquid electrolytes held in external tanks. Because the amount of stored energy can be increased by using larger tanks, these batteries are attractive for large-scale renewable energy storage and grid applications.
Electrodes are a critical part of the battery because they provide the surface where chemical reactions take place. Making electrodes porous increases the available surface area and creates more locations where these reactions can occur.