Synergistic effects of NiPtCo/TiWO hybrid electrocatalysts for accelerating formic acid electro-oxidation performance

We herein report the fabrication strategy of a robust catalyst for the formic acid electro-oxidation reaction (FAOR) via combining the advantages of a TiO 2 -related support and the synergistic effects of NiPtCo alloy. With the predominant dehydrogenation pathway, the NiPtCo/Ti 0.7 W 0.3 O 2 catalyst shows remarkable FAOR mass activity and specific activity of 0.45 A mg Metal −1 and 1.25 mA cm −2 , being 3.75- and 4.81-time higher than those of the commercially available Pt/C, respectively. The as-made FAOR electrocatalyst shows superior CO-tolerance and electrocatalytic stability during long-term operation conditions due to the synergistic contributions of each component in the overall catalyst system. Synergistic contributions of ternary alloys and TiO 2 -based supports accelerate the formic acid electro-oxidation process via the dominant dehydrogenation pathway.