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Increased hydrogen partial pressure suppresses and reverses hydrogen evolution during Pd catalysed electrolysis of CO2

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Abstract

Electrochemical reduction of CO2 on a Pd/C cathode produces formate and hydrogen at low overpotentials. We report on an innovative, effective approach to prevent hydrogen formation. By applying 4 bar partial hydrogen pressure, hydrogen evolution can be fully avoided at −0.05 V vs. RHE and 1 bar partial CO2 pressure.

Graphical abstract: Increased hydrogen partial pressure suppresses and reverses hydrogen evolution during Pd catalysed electrolysis of CO2

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Article information


Submitted
12 May 2020
Accepted
29 Jun 2020
First published
30 Jun 2020

This article is Open Access

Sustainable Energy Fuels, 2020, Advance Article
Article type
Communication

Increased hydrogen partial pressure suppresses and reverses hydrogen evolution during Pd catalysed electrolysis of CO2

M. J. W. Blom, W. P. M. van Swaaij, G. Mul and S. R. A. Kersten, Sustainable Energy Fuels, 2020, Advance Article , DOI: 10.1039/D0SE00731E

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