PGM-Zero™: Single-Site Fe-N₄ Electrocatalysts on Mesoporous Graphene for Complete Platinum Replacement in PEMFC Hydrogen Fuel Cells

Preprint presenting PGM-Zero™, an atomically dispersed Fe-N₄ electrocatalyst in a mesoporous graphitic carbon matrix (SBET ≈ 1,450 m²/g) for complete platinum replacement in PEMFC cathodes. Achieves ORR half-wave potential E1/2 = 0.915 V vs. RHE (vs. 0.920 V for Pt/C), peak power density 1.18 W/cm², loss <15 mV over 30,000 DOE AST cycles, and cuts catalyst cost by 99.9% (from US$34,000/kg to US$18.50/kg), saving US$55.8 million/year for a 50,000-stack PEMFC OEM while reducing CO₂ by 99.95%.Licença: GNU AGPLv3 para uso acadêmico/educacional. Licença Comercial Proprietária: uso comercial/industrial requer licenciamento formal. Cláusula de Value-Sharing (Royalties): qualquer uso comercial que gere faturamento confere ao autor Tiago Barbosa Dias Maciel (CPF 060.184.906-09) direito contratual a royalties de 2,5% a 5% sobre a receita líquida ou economia direta obtida. Chave GPG: EBED5C6C9D81481BBC93D28019A86EA7599F4BB4.