Bifunctional PdPt bimetallenes for formate oxidation‐boosted water electrolysis

Small-molecule electrooxidation-boosted water electrolysis (WE) is an energy-saving method for hydrogen (H2) production. Herein, PdPt bimetallenes (PdPt BMLs) are obtained through the simple galvanic replacement reaction. BMLs reveal 2.93-fold enhancement in intrinsic electroactivity and 4.53-fold mass formate oxidation reaction (FOR) with respect to Pd metallenes (Pd MLs) at 0.50 V potential due synergistic effect. Meanwhile, introduction of Pt atoms also considerably increases evolution (HER) MLs alkaline medium, which even exceeds that use commercial nanocrystals. Inspired by outstanding FOR HER bifunctional BMLs, a two-electrode FOR-boosted WE system (FOR-WE) constructed using as cathode anode. The FOR-WE only requires operational voltage 0.31 achieve H2 production, 1.48 lower than (ca. 1.79 V) traditional system.