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Experimental investigation of newly designed 3D-printed electrodes for hydrogen evolution reaction in alkaline media

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  • Khalil, Muarij
  • Dincer, Ibrahim

Abstract

This paper employs a novel approach for fabricating 3D-printed cathodes for hydrogen evolution reaction for alkaline water electrolysis. The approach investigated in this study involves using additive manufacturing to 3D print electrodes with non-conductive PLA followed by nickel conductive paint coating and electrodeposition of various catalysts. The nickel and nickel-copper, nickel-iron, and nickel-molybdenum alloys are electrodeposited. The nickel electrodes tend to have high overpotentials for 3D-printed electrodes. In this study, a low overpotential for the nickel coated electrode is reported. At a current density of 10 mA/cm2, for sample J with a nickel mass density of 0.178 g/cm2, an overpotential of 367 mV for hydrogen evolution reaction (HER) is measured in 1 mol potassium hydroxide (KOH) solution. The electrochemical activity of the electrodes is further enhanced through the incorporation of catalysts. Specifically, the electrode coated with nickel-molybdenum is found to have an overpotential of 337 mV at a current density of 10 mA/cm2 for HER in 1 mol KOH solution.

Suggested Citation

  • Khalil, Muarij & Dincer, Ibrahim, 2024. "Experimental investigation of newly designed 3D-printed electrodes for hydrogen evolution reaction in alkaline media," Energy, Elsevier, vol. 304(C).
    • Handle: RePEc:eee:energy:v:304:y:2024:i:c:s0360544224017912
    DOI: 10.1016/j.energy.2024.132017
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