Unlocking synergistic effects of mixed ionic electronic oxygen carriers in ceramic-structured environments for efficient green hydrogen storage

This study investigates the use of mixed ionic electronic conductors (MIECs) in ceramic structures to enhance green hydrogen storage through Chemical Looping Hydrogen (CLH) technology. A novel method integrates Yttria-stabilized zirconia (YSZ) into a ceramic foam matrix, significantly improving oxygen exchange capacity (OEC) and specific hydrogen productivity (SHP) by 30–40% with YSZ3 and 10–15% with YSZ8. Over 150 cycles, YSZ8 show the best pressure behavior in the fixed-be and doubling the storage capacity compared to conventional materials like pure ZrO 2 . The study also reveals the superior cyclic stability of these materials, maintaining over 80% efficiency across numerous cycles. These advancements not only support safer, more cost-effective hydrogen storage and transportation but also demonstrate strong potential for industrial scalability, crucial for future energy systems and CO₂-neutral technologies. The structured oxygen carriers could revolutionize hydrogen storage by offering a scalable, efficient solution that meets the demands of modern energy infrastructures. • Innovative Chemical Looping Hydrogen technology enables carbon dioxide-neutral hydrogen storage and easy scalability. • MIECs in ceramic structures significantly improve green hydrogen storage efficiency over 150 cycles. • YSZ3 improves oxygen exchange capacity by 40% and specific hydrogen productivity by 100% compared to standard pellets. • YSZ8 has excellent pressure stability and ensures safe hydrogen storage.