Electrocatalysts Group

Impact of Ir modification on the durability of FeNC catalysts under start-up and shutdown cycle conditions† Carolin Prössl,a Markus Kübler,a Stephen Paul,a Lingmei Ni,ab Simon-Johannes Kinkelin,c Nils Heppe,a Klaus Eberhardt,d Christopher Geppert,d Wolfram Jaegermann,b Robert W. Stark,b Michael Bron c and Ulrike I. Kramm *ab Author affiliations * Corresponding authors a Department of Chemistry, Technical University of Darmstadt, Catalysts and Electrocatalysts group, Alarich-Weiss-Str.

Impact of Ir modification on the durability of FeNC catalysts under start-up and shutdown cycle conditions† Carolin Prössl,a Markus Kübler,a Stephen Paul,a Lingmei Ni,ab Simon-Johannes Kinkelin,c Nils Heppe,a Klaus Eberhardt,d Christopher Geppert,d Wolfram Jaegermann,b Robert W. Stark,b Michael Bron c and Ulrike I. Kramm *ab Author affiliations * Corresponding authors a Department of Chemistry, Technical University of Darmstadt, Catalysts and Electrocatalysts group, Alarich-Weiss-Str.

Spectroscopic discernibility of dopants and axial ligands in pyridinic FeN4 environments relevant to single-atom catalysts† Single-atom catalysts (SACs) activate small molecules, e.g. the oxygen reduction reaction is catalysed by FeNC materials. Because the nature of active site(s) in this type of SAC is unclear, spectroscopic and computational insights are needed to clarify the atomistic composition and electronic structure.