Oxygen‐Bridged Ga‐O‐PtPd Triple Sites Boost Methanol‐Assisted Rechargeable Zn‐Air Batteries Through Suppressing CO_ads Generation

Abstract Constructing high‐efficiency platinum (Pt)‐based catalysts for methanol oxidation reaction (MOR) by suppressing the intermediate CO ads generation is strongly desired and remains a grand challenge. Herein, the concept of holding O‐bridged triple sites is documented to strengthen “non‐CO” pathway selectivity by forming HCOO − species during MOR. The obtained Ga‐O‐PtPd triple sites via grafting the single‐atomic Ga sites on PtPd nanosheets achieves a high current density of 3.05 mAcm −2 of MOR, which is 5.65 times higher than commercial Pt/C (0.54 mAcm −2 ), as well as remarkably stability and CO ads poison resistance. The CO diffuse reflectance infrared Fourier transform spectroscopy (CO‐DRIFTS) results reveal that Ga‐O‐PtPd triple sites present a weak CO binding ability, reducing the generation of CO ads intermediate. In addition, the Ga‐O‐PtPd‐based Zn‐methanol‐air batteries present an excellent activity and stability compared with commercial catalysts.