| 초록 |
The gas bubbles adhered to the electrode surface block the active sites and induce ohmic and concentration overpotentials during hydrogen evolution reaction. Therefore, one can imagine that electrochemical hydrogen production can be improved by imparting bubble-repellent properties to electrodes. Here, we report a simple and general strategy to fabricate electrodes by coating them with porous hydrogel. Hydrogels-modified electrodes exhibited extremely bubble-repellent properties, so-called superaerophobicity, and facilitated bubble detachment from electrodes’ surface during hydrogen evolution reaction. As a result, the superaerophobic hydrogel-modified electrodes showed an outstanding HER performance for a prolonged time. We believe this study provides a low-cost and universal strategy for the construction of a superaerophobic surface for facilitating mass transport during gas-evolving reactions. |
