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Article Abstract
Electrocatalytic nitrogen reduction (eNRR) offers a green pathway for the production of NH from N and HO under ambient conditions. Transition metal oxynitrides (TMO N ) are among the most promising catalysts but face challenges in achieving a high yield and faradaic efficiency (FE). This work develops a hybrid WO N /WO catalyst with a unique heterogeneous interfacial complexion (HIC) structure. This design enables generation and delivery of highly active hydrogen atoms (H*) in acidic electrolytes, promoting nitrogen hydrogenation and the formation of nitrogen vacancies (Nv) on the WO N surface. This significantly enhances the selectivity of eNRR for NH synthesis while suppressing the hydrogen evolution reaction (HER). A simple two-step fabrication processmicrowave hydrothermal growth followed by plasma-assisted surface nitridationwas developed to fabricate the designed catalyst electrode, achieving an NH yield of 3.2 × 10 mol·cm·s with 40.1% FE, outperforming most TMN/TMO N electrocatalysts. Multiple control experiments confirm that the eNRR follows an HIC-enhanced Mars-van Krevelen (MvK) mechanism.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12333582 | PMC |
| http://dx.doi.org/10.1021/acsenergylett.5c01034 | DOI Listing |
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