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The influence of nanostructures and interaction of Sn and Ir in oxygen evolution catalysts in a polymer electrolyte membrane electrolyzer were investigated. For this aim, two synthesis methods, namely, the one-step solution combustion method and the precipitation-deposition me ...

Towards Higher NH3 Faradaic Efficiency

Selective-Poisoning of HER Active Sites by Co-Feeding CO in NO Electroreduction**

Direct electroreduction of nitric oxide offers a promising avenue to produce valuable chemicals, such as ammonia, which is an essential chemical to produce fertilizers. Direct ammonia synthesis from NO in a polymer electrolyte membrane (PEM) electrolyzer is advantageous for it ...

The continuous electrochemical NO reduction to ammonia in a PEM cell was investigated in this work. We used a ruthenium-based catalyst at the cathode and an iridium oxide catalyst at the anode. The highest ammonia faradaic efficiency was observed at 1.9 V cell voltage. Adjusti ...

Polymer electrolyte membrane (PEM) water electrolysis represents a promising technology for the sustainable, emission-free hydrogen production from renewable energy, as it is able to quickly respond to fluctuations in the renewable energy supply. Nevertheless, natural scarcity of ...

Electrified Conversion of Contaminated Water to Value

Selective Conversion of Aqueous Nitrate to Ammonia in a Polymer Electrolyte Membrane Cell

The application of a polymer electrolyte membrane (PEM) electrolytic cell for continuous conversion of nitrate, one of the contaminants in water, to ammonia at the cathode was explored in the present work. Among carbon-supported metal (Cu, Ru, Rh and Pd) electrocatalysts, the ...

Electrolysis-assisted nitrate (NO3) reduction is a promising approach for its conversion to harmless N2 from waste, ground, and drinking water due to the possible process simplicity by in-situ generation of H2/H/H+ by wat ...

Chapter 9

In Situ Spectroscopic Methods to Study Electrochemical CO2Reduction

We should not underestimate the role of in situ and operando spectroscopic techniques in increasing our level of understanding of chemical reactions. The electrochemical reduction of CO2 is not an exception. The application of analytical techniques such as infrared spectroscop ...