V4 O3 F5

V4O3F5 is a vanadium oxide fluoride compound that belongs to the class of mixed-valent transition metal oxyfluorides, materials of interest primarily in electrochemistry and solid-state chemistry research. This compound is investigated for potential applications in energy storage and catalysis due to the electrochemical activity of vanadium in mixed oxidation states, though it remains largely in the research and development phase rather than established commercial production. The fluoride substitution modifies the crystal structure and electronic properties compared to pure vanadium oxides, making it relevant for exploratory work in battery cathodes and catalytic systems.