Tracking compression changes in an aqueous electrolyte for real-Time H2 and O2 gas evolution quantification during total water splitting using BARDS

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Kang, Aaron
Alkhraije, Alanood
McSweeney, Sean
Alfarsi, Anas
Ahmed, Rizwan
Krüse, Jacob
O'Dwyer, Colm
Fitzpatrick, Dara
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American Chemical Society
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Hydrogen fuel cell technology has the potential for integration with renewable energy sources to produce electricity without the need for fossil fuels. Efforts are being made in producing cheap and effective electrodes from new materials to make hydrogen production more efficient. Gas evolution, in all cases, requires an accurate analysis of electrochemical behaviour of electrodes to quantify efficiency, improvement or stability. Knowing the exact gas volume by any method in real-time during electrochemical water splitting is urgently needed. Taking inspiration from the existing Broadband Acoustic Resonance Dissolution Spectroscopy technique, we demonstrate a new approach to continuously track electrochemical water splitting via gas volume evolution from hydrogen evolution reactions (HER) and oxygen evolution reactions (OER) processes. The technique may be used to unravel the true features of new electrode materials that evolve hydrogen, and correlate material electrochemistry to the true gas volume evolved in real-time.
Electrochemistry , Water splitting , HER , OER , BARDS , Gas measurements , Electrode efficiency
Kang, A., Alkhraije, A., McSweeney, S., Alfarsi, A., Ahmed, R., Krüse, J., O'Dwyer, C. and Fitzpatrick, D. (2020) 'Tracking Compression Changes in an Aqueous Electrolyte for Real-Time H2 and O2 Gas Evolution Quantification during Total Water Splitting using BARDS', ACS Applied Energy Materials, doi: 10.1021/acsaem.9b02436
© American Chemical Society. This document is the Accepted Manuscript version of a Published Work to appear in final form in ACS Applied Energy Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see