Journal Article

FZJ-2026-02988

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png CO 2 Electroreduction To Syngas With Tunable Composition In An Artificial Leaf

Veenstra, F. L. P. (Last author) ; Cibaka, T.FZJ* ; Martín, A. J. (Corresponding author) ; Weigand, D.FZJ* ; Kirchhoff, J.FZJ* ; Smirnov, V.FZJ* ; Merdzhanova, T.FZJ* ; Pérez-Ramírez, J.

2024
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/cssc.202400133

Abstract: Artificial leaves (a-leaves) can reduce carbon dioxide into syngas using solar power and could be combined with thermo- and biocatalytic technologies to decentralize the production of valuable products. By providing variable CO : H2 ratios on demand, a-leaves could facilitate optimal combinations and control the distribution of products in most of these hybrid systems. However, the current design procedures of a-leaves concentrate on achieving high performance for a predetermined syngas composition. This study demonstrates that incorporating the electrolyte flow as a design variable enables flexible production without compromising performance. The concept was tested on an a-leaf using a commercial cell, a Cu2O:Inx cathodic catalyst, and an inexpensive amorphous silicon thin-film photovoltaic module. Syngas with CO : H2 ratio in the range of 1.8–2.3 could be attained with only 2 % deviation from the optimal cell voltage and controllable solely by catholyte flow. These features could be beneficial for downstream technologies such as Fischer-Tropsch synthesis and anaerobic fermentation.

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Contributing Institute(s):

1. Photovoltaik (IMD-3)
2. Photovoltaik (IEK-5)

Research Program(s):

1. 1213 - Cell Design and Development (POF4-121) (POF4-121)
2. A-LEAF - An Artificial Leaf: a photo-electro-catalytic cell from earth-abundant materials for sustainable solar production of CO2-based chemicals and fuels (732840) (732840)

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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