Additional accelerated service life test for testing Ni-Sn coatings under the conditions of industrial hydrogen production
Year: 2025
Type: article
Abstract: The accelerated service life test (ASLT), developed by PERMASCAND and applied in a specially designed flow cell, is presented for the first time in the literature in this work. This test involves the application of six sequences of very high current densities, followed by zero current density, in 5.0 M NaOH at 50 oC. The test is performed on Ni-Sn coatings electrodeposited onto Ni mesh, which serves as the substrate for catalytic coatings used by PERMASCAND. The results demonstrate that the overpotential (h) for hydrogen evolution reaction (HER) on several Ni-Sn samples is practically unaffected by the test sequences, remaining approximately -180 mV at j = -1000 mA cm-2. The same test was applied to PERMASCAND’s commercial cathodes, and the results were compared. Additionally, the Ni-Sn samples were tested in a stationary electrolyte H-cell configuration using polarization curves and electrochemical impedance spectroscopy (EIS) measurements. Nyquist plots recorded at four different values of h were characterize
Source: Zastita materijala
DOI: 10.62638/zasmat1546
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4415619313