journal article·2024-01-12Open access

Renewable Syngas Generation via Low-Temperature Electrolysis: Opportunities and Challenges

Andrés Raya-Imbernón, Angelika A. Samu, Stefan Barwe, Giuseppe Cusati, Tamás Fődi, Balázs M. Hepp, Csaba Janáky

ACS Energy Letters· Volume 9· Issue 1

Abstract

High Resolution Image Download MS PowerPoint Slide The production of syngas (i.e., a mixture of CO and H 2 ) via the electrochemical reduction of CO 2 and water can contribute to the green transition of various industrial sectors. Here we provide a joint academic–industrial perspective on the key technical and economical differences of the concurrent (i.e., CO and H 2 are generated in the same electrolyzer cell) and separated (i.e., CO and H 2 are electrogenerated in different electrolyzers) production of syngas. Using a combination of literature analysis, experimental data, and techno-economic analysis, we demonstrate that the production of synthesis gas is notably less expensive if we operate a CO 2 electrolyzer in a CO-selective mode and combine it with a separate PEM electrolyzer for H 2 generation. We also conclude that by the further decrease of the cost of renewable electricity and the increase of CO 2 emission taxes, such prepared renewable syngas will become cost competitive.
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Research context

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Carbon Dioxide Capture Technologies · Electrocatalysts for Energy Conversion

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Air Liquide Forschung & Entwicklung GmbH, Innovation Campus Frankfurt, Gwinnerstraße 27−33, 60388 Frankfurt am Main, Germany

eChemicles Zrt, Alsó Kikötő sor 11, Szeged H-6726, Hungary

Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Square 1, Szeged H-6720, Hungary

Funding

HORIZON EUROPE European Innovation Council · National Research, Development and Innovation Office

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