PAJARITO POWDER (PAJARITO) COMMERCIALLY OFFERS SMALL VOLUME DOMESTIC PRODUCTION OF HIGH SURFACE AREA IROX MATERIALS INTO THE ELECTROLYZER MARKET. AS A SUCCESSFUL COMMERCIAL PRODUCT, THIS BATCH PROCESS STILL SUFFERS FROM SEVERAL SIGNIFICANT LIMITATIONS, WHICH ARE RESTRICTING THE AVAILABILITY OF IROX CATALYSTS FOR WIDE-SCALE VALIDATION, DEVELOPMENT, AND DEPLOYMENT OF PEMWE. TO ADDRESS THESE LIMITATIONS AND TO DERISK COMMERCIAL VIABILITY FOR PEMWE IN LINE WITH DEPARTMENT OF ENERGY (DOE) COST AND PERFORMANCE TARGETS, THIS PROJECT WILL RESULT IN PAJARITO DOMESTICALLY PRODUCING OXYGEN EVOLUTION REACTION (OER) CATALYSTS AT LEVELS REQUIRED TO FURNISH ~ 25% OF THE RAPIDLY GROWING ELECTROLYZER INDUSTRY (WHILE DEMONSTRATING A SCALABLE PLAN TO PROVIDE FOR 100%) AND AT A CATALYST PERFORMANCE AND MANUFACTURING COST OF <$65/G IR (NOT INCLUDING THE COST OF IR) TO FACILITATE $2/KG H2.