Abstract

AbstractAt present, poly(methacrylic acid) (MA), poly(MA) hydrogel, and Pd‐doped poly(MA) hydrogel modified electrodes are constructed on graphite pencil (G). The Pd precursor is coated on the poly(MA)/G electrodes surface using the electrodeposition method. These electrodes are characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy, and scanning electron microscopy‐energy dispersive X‐ray. Poly(MA) hydrogel and Pd‐doped poly(MA) hydrogel are successfully prepared by the polymerization and further electrodeposition. Formic acid electro‐oxidation (FAEO) activities are examined with cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS). Poly(MA)/G and Pd doped poly(MA) electrodes exhibit promising electro‐catalytic activity with 60 mA current density, greater than literature values. Pd‐doped poly(MA) hydrogel electrodes are promising electrodes for FAEO.

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