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Enhanced Oxygen Evolution Reaction Performance of NiMoO/Carbon Paper Electrocatalysts in Anion Exchange Membrane Water Electrolysis by Atmospheric-Pressure Plasma Jet Treatment. | LitMetric

AI Article Synopsis

  • * The plasma treatment significantly improved the electrode's performance by reducing overpotential—790 mV at 100 mA/cm and 368 mV at 10 mA/cm—and lowering charge transfer resistance from 2.8 to 1.2 Ω.
  • * Testing in an anion exchange membrane water electrolysis system showed that at 70 °C and 100 mA/cm, the treated electrode achieved an energy efficiency of 95.1% and reduced specific energy consumption, suggesting it could be a cost-effective and eco

Article Abstract

NiMoO was grown on carbon paper (CP) by a hydrothermal method. A rapid and high-temperature atmospheric-pressure plasma jet (APPJ) process was used to generate more oxygen-deficient NiMoO on the CP surface to serve as an electrode material for the oxygen evolution reaction (OER). After 60 s of APPJ treatment, the overpotential of the electrode at 100 mA/cm decreased to 790 mV and that at 10 mA/cm decreased to 368 mV. Additionally, the charge transfer resistance decreased from 2.8 to 1.2 Ω, indicating that APPJ treatment effectively reduced the electrode overpotential and impedance. The effect of NiMoO/CP/APPJ-60 s on the anion exchange membrane water electrolysis (AEMWE) system was also tested. At a system temperature of 70 °C and current density of 100 mA/cm, the energy efficiency reached 95.1%, and the specific energy consumption decreased from 4.02 to 3.83 kWh/m. These results demonstrate that the APPJ-treated NiMoO/CP electrode can effectively enhance the OER performance in water electrolysis and improve the energy efficiency of the AEMWE system. This approach shows promise in replacing precious metal electrodes, thereby potentially reducing the cost and providing an environmentally friendly alternative.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11580383PMC
http://dx.doi.org/10.1021/acs.langmuir.4c03557DOI Listing

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