Boron-doped carbon–iron nanocomposites as efficient oxygen reduction electrocatalysts derived from carbon dioxide

Abstract

Developing cost-effective oxygen reduction reaction (ORR) catalysts is pivotal for development of fuel cells. While Fe–N–C catalysts were proposed for ORR, Fe–B–C catalysts have not been explored. This work introduces the B-doped carbon catalysts encapsulating iron cores using CO₂ as a carbon source. The Fe–B–C catalysts show enhanced ORR activity and durability due to the iron core within the graphitic layers.