Seizing gaseous Fe<sup>2+</sup> to densify O<sub>2</sub>-accessible Fe–N<sub>4</sub> sites for high-performance proton exchange membrane fuel cells
Shuhu Yin, Shuangli Yang, Gen Li, Guang Li, Binwei Zhang, Chongtai Wang, Mingshu Chen, Hong‐Gang Liao, Jian Yang, Yanxia Jiang, Shi‐Gang Sun
Abstract
Increasing the density of surface Fe–N 4 sites in Fe–N–C materials is pivotal for enhancing the kinetics of the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs).
Topics & Concepts
Proton exchange membrane fuel cellProtonFuel cellsMaterials scienceOxygen reduction reactionKineticsMembraneOxygenChemical engineeringNuclear chemistryChemistryElectrochemistryPhysical chemistryElectrodeOrganic chemistryNuclear physicsPhysicsEngineeringBiochemistryQuantum mechanicsElectrocatalysts for Energy ConversionFuel Cells and Related MaterialsAdvanced battery technologies research