Journal
CHEMICAL COMMUNICATIONS
Volume 54, Issue 61, Pages 8474-8477Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc03627f
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Funding
- National Natural Science Foundation of China [21575050, 21575137]
- National Key Scientific Instrument and Equipment Development Project of China [21627809]
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A highly attractive, but still a key challenge, is the development of earth-abundant electrocatalysts for efficient NH3 electrosynthesis via the N-2 reduction reaction (NRR). In this communication, we report the development of a Mo2N nanorod as a highly efficient and selective NRR electrocatalyst for artificial N-2 fixation in acidic electrolytes under ambient conditions. In 0.1 M HCl, this catalyst achieved a high Faradaic efficiency of 4.5% with a NH3 yield of 78.4 mu g h(-1) mg(cat.)(-1) at -0.3 V vs. a reversible hydrogen electrode, thus outperforming most reported NRR electrocatalysts under ambient conditions and some under harsh conditions. Density functional theory calculations revealed that the free energy barrier of the potential determining step of NRR on MoO2 decreases dramatically after nitrogenization.
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