Does power ultrasound (26 kHz) affect the hydrogen evolution reaction (HER) on Pt polycrystalline electrode in a mild acidic electrolyte?

Ultrasound Supported Galvanostatic Deposition of Zn Coatings Reinforced with Nano-, Submicro-, and Micro-SiC Particles—Weak Acidic Chloride Baths

“…4% for 1 A/dm 2 , and these differences became increasingly significant with the increase of the current density. It was reported that ultrasound efficiently removed hydrogen bubbles—one of the steps limiting the kinetics of HER—making the overall process faster [ 36 ]. This, in turn, may be responsible for the lower efficiency of metallic zinc electrodeposition in presence of ultrasound compared to a deposition without ultrasound.…”

Sonochemical and Sonoelectrochemical Production of Energy Materials

“…It was found that all the results are in agreement and showed that power ultrasound increased the rate of hydrogen production. For example, our group showed a 250% enhancement in current density at maximum acoustic power (29.2 W.cm −2 ) through effective hydrogen bubble removal as indicated by the ultra-fast camera imaging experiments (Figure 4) [30]. Li et al [22] studied the effects of power ultrasound on water electrolysis in different NaOH concentrations.…”

“…For example, Lepesant [27] and other researchers such as Zadeh [28] and Symes [29], under the supervision of Pollet, studied the influences of ultrasound on electrolytic hydrogen production from weak acidic (H2SO4) and alkaline (NaOH and KOH) solutions using various electrode materials including platinum (Pt), industrial carbon (C), glassy carbon (GC) and 316 stainless steel (316-SS). Our recent work at the Norwegian University of Science and Technology (NTNU) Hydrogen Energy and Sonochemistry research group investigated the effects of ultrasound on the hydrogen evolution reaction in the mild acidic electrolyte on polycrystalline Pt [30]. It was found that all the results are in agreement and showed that power ultrasound increased the rate of hydrogen production.…”

“…The applied potential was set at −1.30 V vs. RHE (a) 0 μs, (b) 100 μs, (c) 200 μs, (d) 300 μs, (e) 400 μs, (f) 500 μs, (g) 600 μs. The time between each image is 10 −4 s (100 μs) filmed at 10,000 frames per second[30].…”

Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments

“…[1810][1811][1812] In general, hydrogen and oxygen gas bubbles evolving on the electrolyser electrode surfaces and in an electrolyte affect: (i) Z activation as the adhering bubbles decrease A eff , (ii) Z Ohmic due to a blockage of ionic pathways available for electronic transport, and (iii) Z concentration due to the dissolved gas products and the decrease in supersaturation levels within the electrolyte. There are several methods for reducing the total overpotential and total Ohmic resistance in water electrolysis, for example, by either increasing the electrolyte movement i.e., mass-transfer, by using gravity, 1810,1811 by centrifugal acceleration field, 1812 by mechanical stirring, 1813,1814 by using a magnetic field, 1809,[1812][1813][1814][1815][1816][1817][1818][1819][1820] or by employing ultrasound, [1821][1822][1823][1824][1825][1826][1827][1828][1829][1830][1831][1832][1833][1834][1835][1836] at the gas-evolving electrodes and electrolyte.…”