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Pressurized N directly fed to the RuAu/CeO catalyst porous electrode in a proton exchange membrane electrolyzer favoring electrochemical NH production
The limited N 2 solubility in the present aqueous electrolyte critically restricts the selectivity and activity of environment-friendly electrochemical NH 3 production at high current density. Here we developed a high-performance electrolyzer for the electrochemical N 2 reduction reaction (eNRR) usi...
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Published in: | Chemical communications (Cambridge, England) England), 2022-11, Vol.58 (93), p.133-136 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | |
Online Access: | Get full text |
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Summary: | The limited N
2
solubility in the present aqueous electrolyte critically restricts the selectivity and activity of environment-friendly electrochemical NH
3
production at high current density. Here we developed a high-performance electrolyzer for the electrochemical N
2
reduction reaction (eNRR) using amorphous RuAu clusters anchored on CeO
1.88
nanorods with rich oxygen vacancies (OVs) as the catalyst and a proton exchange membrane (PEM) as the solid-state electrolyte, in which N
2
is directly delivered to the electrode across a gas diffusion layer. The PEM electrolyzer achieved a remarkable NH
3
yield rate of 185.53 μg mg
−1
h
−1
at −0.3 V
vs.
RHE under an applied N
2
pressure of 4 bar, which is 5 times higher than that in aqueous electrolyte.
A high-performance electrolyzer for eNRR using PEM as electrolyte, in which the N
2
is directly delivered to catalyst across a gas diffusion layer. The PEM electrolyzer achieved a remarkable eNRR activity, surpassing that in aqueous electrolyte. |
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ISSN: | 1359-7345 1364-548X |
DOI: | 10.1039/d2cc04488a |