Thermochemical heat storage is a promising system that offers significantly higher thermal energy storage densities. During the charge/discharge cycling, the powder tends to agglomerate, which leads to a decrease in system efficiency. Researchers at CIC energiGUNE, in collaboration with DLR, have developed a method to prevent the powder agglomeration during the charge/discharge cycles of gas-solid reactions used in thermochemical energy storage application.
This method is based on partial coating of a surface of particles of a powdered base material (reactant) with a coating material (nanoparticles). The coating of the reaction powder bed also reduces the interparticle adhesion forces, which improves the permeability and the flow behavior of the coated powder compared to the base material.
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Anna Llordés Gil (CIC energiGUNE), Frédéric Aguesse (CIC energiGUNE), Antonio Gutiérrez Pardo (CIC energiGUNE), Jakub Zagorski (CIC energiGUNE), Francisco José Fernández Carretero (Fundación Tecnalia Research & Innovation), Amal Siriwardana (Fundación Tecnalia Research & Innovation), Alberto García Luis (Fundación Tecnalia Research & Innovation) and Haizea Villaverde Cendoya (Fundación Tecnalia Research & Innovation)
Jokin Rikarte Ormazabal (CIC energiGUNE), Juan Luis Gómez Cámer (CIC energiGUNE) and Miguel Ángel Muñoz Márquez (CIC energiGUNE)