Active site Catalysis 1 Catalysts 1 Chronoamperometry 1 Electrolytic reduction 1 Half-wave potential 1 Iron compounds 1 Metalorganic frameworks (MOFs) 1 Methylimidazole 1 Morphology 1 Organometallics 1 Oxygen reduction reaction 1 Pore size 1 Potassium hydroxide 1 Property 1 Pyrolysis 1 Reaction catalysis 1 Special structure 1 Zeolitic imidazolate frameworks 1 ]+ catalyst 1