Affiliation:
1. Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province College of Chemistry Liaoning University Shenyang China
2. School of Science RMIT University Melbourne Victoria Australia
3. College of Science Liaoning Petrochemical University Fushun China
Abstract
AbstractElectrocatalytic N2 reduction (NRR) has been regarded as a promising approach for environment‐friendly and sustainable ammonia (NH3) synthesis. However, developing cost‐effective electrocatalysts with high NRR efficiency at low overpotential in neutral media remains a great challenge. In this paper, a freestanding NRR electrocatalyst, BiFeO/FCC, has been developed by in situ growth of bismuth ferrite (Bi25FeO40) on functionalized carbon cloth (FCC), which exhibits high NRR activity with a maximum NH3 yield of 3.88 μg h−1 cm−2 (at −0.40 V vs. reversible hydrogen electrode [RHE]) and a Faradaic efficiency of 12.71% (at −0.45 V vs. RHE) in 0.1 M Na2SO4. The synergistic effect of the abundant exposed bismuth and iron dual active sites confined in the lattice, the binder‐free nature of the electrode and the excellent conductivity of the carbon substrate enable the easy adsorption/activation of N2 and accelerate the electron transfer simultaneously, thus boosting its NRR performance. This work is significant to design low‐cost, and high‐efficient NRR catalysts for large‐scale electrocatalytic NH3 synthesis.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Liaoning Province
Cited by
2 articles.
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