Powder Catalyst Fixation for Post-Electrolysis Structural Characterization of NiFe Layered Double Hydroxide Based Oxygen Evolution Reaction Electrocatalysts

Abstract

An active and stable OER catalyst was directly fixated on an electrode starting from a NiFe layered double hydroxide (LDH)/polybenzoxazine composite. Owing to its stable immobilization on the electrode, the catalyst can be characterized before and after electrolysis. After electrolysis at 200 mA cm−2 in 5 m KOH for 100 h, previously not reported structural changes were observed for the NiFe LDH.