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Materials 2018, 11(8), 1368; https://doi.org/10.3390/ma11081368

Electrochemical Impedance Spectroscopy as a Diagnostic Tool in Polymer Electrolyte Membrane Electrolysis

CNR-ITAE, Via Salita S. Lucia sopra Contesse 5, 98126 Messina, Italy
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Received: 29 June 2018 / Revised: 25 July 2018 / Accepted: 3 August 2018 / Published: 7 August 2018
(This article belongs to the Special Issue Hydrogen and Fuel Cells: From Materials to Systems)
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Abstract

Membrane–electrode assemblies (MEAs) designed for a polymer electrolyte membrane (PEM) water electrolyser based on a short-side chain (SSC) perfluorosulfonic acid (PFSA) membrane, Aquivion®, and an advanced Ir-Ru oxide anode electro-catalyst, with various cathode and anode noble metal loadings, were investigated. Electrochemical impedance spectroscopy (EIS), in combination with performance and durability tests, provided useful information to identify rate-determining steps and to quantify the impact of the different phenomena on the electrolysis efficiency and stability characteristics as a function of the MEA properties. This technique appears to be a useful diagnostic tool to individuate different phenomena and to quantify their effect on the performance and degradation of PEM electrolysis cells. View Full-Text
Keywords: water electrolysis; hydrogen generation; impedance spectroscopy; polymer electrolyte membrane; membrane-electrode assembly; oxygen evolution; iridium catalysts; platinum catalysts water electrolysis; hydrogen generation; impedance spectroscopy; polymer electrolyte membrane; membrane-electrode assembly; oxygen evolution; iridium catalysts; platinum catalysts
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Siracusano, S.; Trocino, S.; Briguglio, N.; Baglio, V.; Aricò, A.S. Electrochemical Impedance Spectroscopy as a Diagnostic Tool in Polymer Electrolyte Membrane Electrolysis. Materials 2018, 11, 1368.

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