▎ 摘　　要

One of the most effective methods for onsite hydrogen production has been identified as electrochemical methanol reformation (ECMR). However, when it comes to economic viability, it is critical to reduce production costs while improving the specific performance and stability of the electrocatalyst towards hydrogen evolution reaction (HER). To address these issues, we have synthesized Pd2-Co1-Ir1 alloy nanoparticles which were then assembled onto graphene-carbon nanotubes (G-CNTs) through the chemical reduction method. The electro-catalytic activity of the developed electrocatalyst for HER was evaluated through CV, LSV and EIS techniques in an acidic medium. The Pd2-Co1-Ir1/G-CNTs hybrid catalyst showed excellent electrocatalytic activity with high electrochemical surface area (160 m2 g-1), small Tafel slope value (31 mV dec- 1), low charge transfer resistance (9 omega) and long-term stability. Pd2-Co1-Ir1/G-CNTs electrocatalyst showed superior performance at 60 degrees C cell temperature with a cell voltage and current density of 0.60 V and 250 mA cm-2, respectively, in single ECMR cell as compared to commercially available Pt/C catalyst and other control catalysts in a single ECMR cell. The improvement in electrocatalytic activity could be attributed to the use of G-CNTs as hybrid carbon support and alloying Pd with Co and Ir, which in turn enhanced the electrocatalytic activity of Pd metal.