AI Article Synopsis
- At near-neutral pH levels and without buffers, low hydronium ion activities lead to inefficient hydrogen production due to limited diffusion of ions.
- Metal electrodes show consistent current behavior in these conditions, indicating their inherent ability to facilitate the water reduction reaction.
- The generation of hydrogen occurs at higher potentials as a result of the initial reaction between limited hydrogen ions and water molecules.
Article Abstract
Insufficient hydronium ion activities at near-neutral pH and under unbuffered conditions induce diffusion-limited currents for hydrogen evolution, followed by a reaction with water molecules to generate hydrogen at elevated potentials. The observed constant current behaviors at near neutral pH reflect the intrinsic electrocatalytic reactivity of the metal electrodes for water reduction.
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| http://dx.doi.org/10.1039/c5cp02330k | DOI Listing |
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