RhP2

RhP2 is a rhodium phosphide intermetallic compound belonging to the transition metal phosphide family, of interest primarily in materials research and catalysis. While not yet established in high-volume industrial production, rhodium phosphides are investigated for electrocatalytic applications—particularly hydrogen evolution and oxygen reduction—due to their tunable electronic structure and high catalytic activity compared to platinum-based alternatives. This material represents an emerging class of earth-abundant catalyst precursors and is most relevant to engineers developing next-generation electrochemical devices or exploring cost-effective alternatives to noble metal catalysts.