Designing Highly Durable Ternary PtCoM Intermetallic Catalysts on Advanced Support for Heavy-Duty MEAs

DESIGNING HIGHLY DURABLE TERNARY PTCOM INTERMETALLIC CATALYSTS ON ADVANCED SUPPORT FOR HEAVY-DUTY MEAS OUR PROPOSED PROJECT IS TO DEVELOP HIGHLY ACTIVE AND DURABLE PT-BASED CATHODE ELECTROCATALYSTS, SUPPORT, AND MEAS THROUGH IN-DEPTH DESIGN FOR HDV APPLICATIONS. WE ASSEMBLED A DIVERSIFIED TEAM WITH DIFFERENT BUT COMPLEMENTARY EXPERTISE, CONSISTING OF THE UNIVERSITY AT BUFFALO (SUNY-BUFFALO), WASHINGTON UNIVERSITY ST. LOUIS (WUST), PACIFIC NORTHWEST NATIONAL LABORATORY (PNNL), AND BALLARD POWER SYSTEM INC. SEVERAL EFFICIENT AND SYNERGETIC APPROACHES ARE PROPOSED TO FULLY MEET THE CHALLENGING TARGETS FOR CATALYSTS AND MEAS FUEL CELL HDVS: • TO DEVELOP HIGHLY ORDERED TERNARY PGM NPS AT A SIZE LESS THAN 4 NM WITH ENHANCED INTRINSIC ORR ACTIVITY AND STABILITY. • TO DESIGN NOVEL CATALYST SUPPORT, INCLUDING ENGINEERING CARBON, OXIDE, AND CARBON/OXIDE COMPOSITE SUPPORT, AIMING TO ENHANCE TERNARY ORDERED PGM INTERMETALLIC CATALYST ACTIVITY AND STABILITY AND THE INTRINSIC TOLERANCE TO THE HARSH START-UP/SHUT-DOWN CONDITIONS. • TO DEVELOP AND INCORPORATE EFFECTIVE ROS SCAVENGERS TO ELIMINATE THE OXIDATIVE RADICALS/BY-PRODUCTS FOR ACHIEVING LONG-TERM STABILITY. THE ULTIMATE TARGET OF THE PROJECT IS TO FABRICATE SCALABLE MEAS (>50 CM2) AT A LOW PGM LOADING OF 0.3 MGPT CM-2 RETAINING >1.07 A/CM2 AT 0.7 V AND 2.5 KW/GPGM POWER DENSITY AFTER EQUIVALENT 25,000-HOUR OPERATION BASED ON M2FCT RECOMMENDED AST PROTOCOLS.