A research team from Aalborg University has developed an advanced technology that can store green energy for months while significantly reducing costs. Aalborg University announced this in a statement.
Associate Professor Manohar Chirumamilla and Professor Kjeld Pedersen from the Department of Materials and Production have created a thermal emitter that can withstand extreme temperatures and function stably for more than six months. The newly developed technology has just been published in the scientific journal Cell Reports Physical Science.
- We have created a thermal emitter that not only survives extreme temperatures, but also functions stably for more than six months. This is an important step towards usable thermal batteries, says Manohar Chirumamilla, associate professor at Aalborg University.
Instead of storing energy in chemical form as in traditional batteries, the new solution stores excess renewable electricity as heat in cheap and scalable materials. The stored heat can then be converted into electricity using thermophotovoltaic cells that utilize infrared radiation.
After more than ten years of research, the team has developed a nanostructured emitter consisting of particles from yttrium-stabilized zirconium oxide on a tungsten reflector. The combination provides unprecedented thermal stability and makes the technology suitable for both energy storage and waste heat recovery in industry.
- Up to half of the energy in industry is lost as heat. With our technology, a large part of it can be recovered - and either used directly or converted into electricity, says Manohar Chirumamilla.
The system, which was developed in collaboration with the Technische Universität Hamburg, Universität Hamburg and the Helmholtz-Zentrum Hereon, is now so mature that it can be scaled up for industrial use. The next step will be to test the solution in collaboration with companies to demonstrate its use in practice.
- We have shown that the emitter can withstand extreme temperatures for a long time. Now it is about building the entire system and showing how it can work in real scenarios – for example in a Danish industrial company, says Manohar Chirumamilla.
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