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Ambient electrosynthesis of NH3 from N2 using Bi-doped CeO2 cube as electrocatalyst.
- Source :
-
International Journal of Hydrogen Energy . Sep2021, Vol. 46 Issue 62, p31523-31532. 10p. - Publication Year :
- 2021
-
Abstract
- The synthesis of ammonia (NH 3) from electrochemical nitrogen reduction reaction (NRR) under environmental conditions is a promising technology. Compared with the traditional artificial nitrogen fixation process by the Haber-Bosch process, electrochemical nitrogen reduction reaction (NRR) requires no harsh reaction conditions. In this work, we report that Bi-doped CeO 2 nanocubes show high NRR activity as electrocatalysts. The NH 3 yield of 17.83 μgh−1 mg−1 cat. and the Faradaic Efficiency (FE) of 1.61% at −0.9 V are achieved in 0.1 M Na 2 SO 4. The performance is much higher than that for the traditional CeO 2 nanoparticles. The detailed analysis indicates that both the Bi doping and the cube morphology are critical for this encouraging NRR performance. The mechanism for improving NRR is further explored with first-principle calculations, demonstrating the importance of Bi-doping for performance enhancement. • Nano Bi 0.2 Ce 0.8 O 2-δ with cube shape shows high NRR performance. • Bi-doping is critical for the high performance. • Insights for reaction mechanism were revealed with first principle calculations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 46
- Issue :
- 62
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 152062697
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2021.07.039