Abstract:Pt/carbon cloth (Pt/ACC) electrodes were prepared via underpotential deposition of Cu in combination with replacement reaction between Cu and Pt precursor by using anodized carbon cloth (ACC) as conductive substrate. The results showed that the loading amount and dispersion of Pt could be accurately controlled by adjusting Cu deposition potential. With the variation of deposition potential from 0.32 to 0.15 V vs. RHE, the loading amount of Pt on ACC increased linearly. The results of hydrogen evolution in 0.5 MH2SO4 revealed that with the increasing in Pt loading, the onset potential for hydrogen evolution decreased gradually. When deposition potential is 0.15 V vs. RHE, the loading amount of Pt is only 588 μg·cm-2 and the obtained Pt/ACC electrode showed comparable activity to Pt foil with a onset potential of -0.05 V vs. RHE, a overpotential of 68 mV to reach a current density of 10 mA·cm-2, and tafel slope of 34.2 mV·dec-1.