Dual-path Glucose Electrooxidation Reaction on Ni(OH)2/NiOOH Catalysts in Alkaline Media

•GOR in alkaline media is catalyzed by the Ni(OH)2/NiOOH transition but not the Ni/Ni(OH)2 one.•Presence of Fe impurities impacts the GOR on Ni(OH)2/NiOOH electrodes.•In-situ FTIRS confirms formate as one of the main products of the GOR on Ni.•Microkinetic modeling suggests that GOR on Ni occurs through a dual-path mechanism.