Shinagawa Tatsuya, Takanabe Kazuhiro
Division of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
Phys Chem Chem Phys. 2015 Jun 21;17(23):15111-4. doi: 10.1039/c5cp02330k.
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.
在接近中性的pH值和无缓冲条件下，水合氢离子活性不足会引发析氢的扩散限制电流，随后在较高电位下与水分子发生反应生成氢气。在接近中性pH值下观察到的恒流行为反映了金属电极对水还原的固有电催化活性。
