Na3FePCO7

Na3FePCO7 is an inorganic ceramic compound containing sodium, iron, phosphorus, carbon, and oxygen—a polyphosphate or mixed-anion ceramic material that represents an emerging class of functional ceramics. This compound is primarily of research interest for electrochemical energy storage and catalytic applications, where iron-based phosphates have shown promise as alternatives to conventional lithium-ion cathode materials and oxygen evolution catalysts. Its appeal lies in using earth-abundant iron rather than precious metals, potentially offering cost advantages and improved sustainability in battery and fuel cell technologies.