1) Reversible Protonic Ceramic Cells (RPCCs)
Unlike conventional oxygen ion conductive reversible solid oxide cells (RSOCs), reversible protonic ceramic cells (RPCCs) are next-generation energy conversion and storage technologies that can show high proton conductivity at low temperatures below 600℃ using proton (H+) conductive ceramic electrolytes, and can reversibly convert power and produce hydrogen with high efficiency. We are working on developing processes based on triple conducting (H+/O2-/e-) oxide catalysts and tape-casting process with the aim of demonstrating and verifying mass production of this technology. Through recent papers, we have unveiled high-performance and high-strength unit cell technology that implements exceptional performance and durability worldwide, and are also taking the lead in securing the original technology with the aim of localizing this field.
Keywords: Proton ceramic fuel cell, Proton ceramic electrolysis cell, Proton conducting electrolyte, Triple conducting oxygen catalysts
2) Reversible Solid Oxide Cells (RSOCs)
Reversible solid oxide cells (RSOCs) are energy conversion and storage devices that combine a fuel cell reaction, which converts chemical energy from fuels like hydrogen into electrical energy, with an electrolytic reaction that separates water into hydrogen and oxygen. This technology represents an energy storage solution where solid oxide electrolysis cells (SOECs) generate hydrogen by electrolyzing steam at high temperatures of more than 800°C, while solid oxide fuel cells (SOFCs) produce electricity using hydrogen, all within a single device. Depending on the direction of operation, RSOCs can function as either fuel cells or electrolyzers. Our research and development initiatives have yielded highly stable unit cell technologies that exhibit outstanding performance and durability worldwide. We are dedicated to pioneering original technologies with the goal of localizing advancements in this field.
Keywords: Solid oxide fuel cell, Solid oxide electrolysis cell, Electrolyte, Oxygen catalysts
3) All Solid-State Battery (ASSB)
Currently, the industry is trying to apply lithium ion-based secondary batteries to electric vehicles and large capacity storage systems (ESSs), but major issues arise in the stability area such as the risk of explosion of liquid electrolytes. Therefore, our research team is also focusing on all-solid battery research, which is the next-generation battery technology. All-solid battery is the most stable technology that can physically and chemically replace current lithium ion batteries. Among them, oxide-based all-solid battery is very stable compared to other all-solid battery cells, but it is very difficult to secure a single phase through single phase and low cost process. However, our research team recently succeeded in developing LLZO electrolyte powder technology for high-quality and low-cost processes, and is currently focusing on securing highly reproducible single cell process technology based on this technology.
Keywords: Solid-state battery, Lanthanum lithium zirconate, Lithium battery explosion
Domestic Patents
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