Accelerating lithium-mediated nitrogen reduction through an integrated palladium membrane hydrogenation reactor

Hossein Bemana, Hendrik Schumann, Morgan McKee, Senada Nozinovic, Jörg Daniels, Ralf Weisbarth and Nikolay Kornienko ()
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Hossein Bemana: University of Bonn
Hendrik Schumann: University of Bonn
Morgan McKee: University of Bonn
Senada Nozinovic: University of Bonn
Jörg Daniels: University of Bonn
Ralf Weisbarth: University of Bonn
Nikolay Kornienko: University of Bonn

Nature Communications, 2025, vol. 16, issue 1, 1-7

Abstract: Abstract Lithium-mediated N2 reduction reaction (LiNRR) is regarded as the most robust route towards electrifying NH3 synthesis. However, in this reaction geometry, hydrogen atoms typically supplied through electrolyte degradation, via H2 oxidation or a combination of both, hampering the efficiency of the process. In this work we provide an alternative H-source by merging a Pd Membrane reactor (PMR) with a LiNRR reactor in a unique dual-reactor setup. Specifically, use a Pd membrane that extracts H atoms directly from H2O and transfers them across the membrane to an electrodeposited Li layer operating under non-aqueous LiNRR conditions. We show that these H2O-derived H-atoms are used directly to synthesize NH3 in the presence of N2 and electrodeposited Li, thereby opening orthogonal reaction pathways within the metal-mediated nitrogen reduction concept.

Date: 2025
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DOI: 10.1038/s41467-025-62088-z

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