La4Ni3O8

La₄Ni₃O₈ is a lanthanum-nickel oxide ceramic compound belonging to the family of perovskite-related oxides, typically synthesized for research applications rather than established commercial use. This material is investigated primarily in electrochemistry and energy storage contexts, particularly for oxygen reduction catalysis, solid-state electrolytes, and electrode materials in fuel cells and metal-air batteries where its mixed-valence nickel sites and oxygen mobility are of interest. Its relevance lies in fundamental studies of ionic conductivity and catalytic activity in high-temperature electrochemical devices, positioning it as a candidate material for next-generation energy conversion systems rather than a proven engineering standard.