Noise Phenomena in Electrochemical Impedance Spectroscopy of Polymer Electrolyte Membrane Electrolysis Cells

K. Elsøe*, M. R. Kraglund, L. Grahl-Madsen, G. G. Scherer, J. Hjelm, S. H. Jensen, T. Jacobsen, M. B. Mogensen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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In this study, the origin of noise in electrochemical impedance spectroscopy (EIS) spectra measured on a variety of polymer electrolyte membrane electrolysis cells (PEMECs) has been investigated. EIS was measured during operation at various current densities of seven different PEMECs divided in five different cell types including both acidic PEMECs and alkaline PEMECs. The noise pattern differed between various types of cells and between cells of the same cell type. Integration time had no influence on the EIS noise level, whereas the AC amplitude seems to influence the EIS noise level. Other electrical noise sources influencing the EIS measurements have been studied with oscilloscope. No noise was observed at DC. A hypothesis explaining the relation between bubble formation during electrolysis and EIS noise is proposed based on the experimental findings.
Original languageEnglish
JournalFuel Cells
Issue number5
Pages (from-to)640-648
Publication statusPublished - 2018
Event6th European PEFC and Electrolyzer Forum - Lucerne, Switzerland
Duration: 4 Jul 20177 Jul 2017
Conference number: 6


Conference6th European PEFC and Electrolyzer Forum
Internet address

Bibliographical note

Special issue. Paper presented at the 6th EUROPEAN PEFC & ELECTROLYZER Forum (EFCF2017), July 4–7, 2017 held in Lucerne, Switzerland.


  • EIS
  • EIS noise
  • Electrochemical Impedance Spectroscopy
  • Gas Bubbles
  • Nafion 117
  • Polymer Electrolyte Membrane Electrolysis Cell


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