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Free keywords:
Biocatalysis; Bioelectrochemistry; Carbon dioxide reduction; Extracellular electron transfer; Methanogenesis; Microbial electrosynthesis
Abstract:
Highlights
• A lithoautotrophic archaeon selectively produces methane at − 0.4 V vs. SHE.
• Methane production by strain IM1 proceeds with a coulomb efficiency of 80%.
• CO2 reduction by strain IM1 features a low overpotential of only − 0.16 V vs. SHE.
• Below − 0.4 V vs. SHE selectivity changes and H2 is evolved in a second pathway.
• Strain IM 1 shows great promise for bioelectrical conversion of renewable energy.