Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 47, Issue 94, Pages 39719-39730Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2022.09.159
Keywords
PEM water Electrolysis cells; Porous transport electrodes; ALD coating; Long-term performance; Degradation
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Funding
- Federal Ministry of Education and Research of Germany [03SF0564A]
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This study investigates the activity and durability of a polymer electrolyte membrane (PEM) water electrolysis single cell assembled with porous transport electrodes (PTEs) with low catalyst loading for 500 hours. A current density of 160 mA/cm2 and a high mass activity of 1368 A/gIr were achieved at 60 degrees C with 1 mol/L sulfuric acid. The degradation of the cell was characterized using various electrochemical and physicochemical methods, and the average degradation rate of the cell was determined to be 67 mV/h at 15 mA/cm2. This is the first investigation of the long-term performance of a PEM water electrolysis cell assembled with PTEs coated by ALD.
Activity and durability of a polymer electrolyte membrane (PEM) water electrolysis single cell, assembled with porous transport electrodes (PTEs) with a low catalyst loading were investigated for 500 h. A current density of 160 mA/cm2 and a high mass activity of 1368 A/ gIr were achieved while operating at 60 degrees C with 1 mol/L sulfuric acid. The degradation of the cell was characterized using different electrochemical and physicochemical methods before, during and after operation of the electrolysis cell and a mean degradation rate for the cell of 67 mV/h was determined at 15 mA/cm2. To the best of our knowledge this is the first time that long-term performance of a PEM water electrolysis cell assembled with PTEs coated by ALD is investigated.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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