Vanadium Diboride (VB<sub>2</sub>) for NO Electroreduction to NH<sub>3</sub>
Guike Zhang, Nana Zhang, Yali Guo, Xiaolin Zhao, Ke Chu
Abstract
We report VB 2 as an efficient electrocatalyst for NO-to-NH 3 electroreduction (NORR), showing the highest NH 3 -Faradaic efficiency of 89.6% with the corresponding NH 3 yield rate of 198.3 μmol h –1 cm –2 at −0.5 V vs RHE. Theoretical calculations demonstrate that B sites of VB 2 act as the key active centers which can facilitate the NORR protonation energetics and inhibit the competitive hydrogen evolution, boosting both NORR activity and selectivity.
Topics & Concepts
ChemistryProtonationFaraday efficiencyVanadiumSelectivityYield (engineering)Boosting (machine learning)Inorganic chemistryElectrochemistryIonPhysical chemistryThermodynamicsOrganic chemistryCatalysisElectrodeMachine learningComputer sciencePhysicsAmmonia Synthesis and Nitrogen ReductionCatalytic Processes in Materials ScienceHydrogen Storage and Materials