Ammonia was produced electrochemically from nitrogen/air in aqueous alkaline electrolytes by using a Fe 2 O 3 /TiO 2 composite catalyst under room temperature and atmospheric pressure. At an applied potential of 0.023 V versus reversible hydrogen electrode, the rate of ammonia formation was 1.25 × 10 −8 mmol mg −1 s −1 at an overpotential of just 34 mV. This rate increased to 2.7 × 10 −7 mmol mg −1 s −1 at −0.577 V. The chronoamperometric experiments on Fe 2 O 3 /TiO 2 /C clearly confirmed that Fe 2 O 3 along with TiO 2 shows superior nitrogen reduction reaction activity compared to Fe 2 O 3 alone. Experimental parameters such as temperature and applied potential have a significant influence on the rate of ammonia formation. The activation energy of nitrogen reduction on the employed catalyst was found to be 25.8 kJ mol −1 . Real-time direct electrochemical mass spectrometry analysis was used to monitor the composition of the evolved gases at different electrode potentials.

Fuel cells are electrochemical devices that convert the chemical energy of fuel and an oxidizing agent into electricity, producing water as a byproduct. This work demonstrates the use of solid...

Correction for ‘Solid oxide fuel cells for ammonia synthesis and energy conversion’ by Valentina Goldstein et al., Sustainable Energy Fuels, 2022, 6, 4706–4715, https://doi.org/10.1039/D2SE00954D.