Preparation of Ag nanoparticles by spark ablation in gas as catalysts for electrocatalytic hydrogen production.

6,13,29 By comparing the LSV curves obtained at different deposition times with a fixed carrier gas flow rate (5 L min −1 ), the HER overpotential showed a decreasing trend at first and then increasing, as shown in Fig. 5d .

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Interestingly, when the carrier gas flow rate was increased, the HER properties of the three samples prepared showed a trend of gradual improvement (618 mV > 580 mV > 462 mV at 10 mA cm −2 vs.

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