Rapid bubble detachment at gas evolution reaction electrodes by aerophobic nanofibrillar hydrogels
발표자
()
초록
내용
To achieve effective hydrogen generation, researchers have concentrated on the creation of diverse electrocatalysts composed of noble and certain transition metals; nevertheless, there are rising worries about their sustainability. Hydrogel embedding increases the performance of Ni foam (NiF) electrodes for alkaline HER without the need for electrocatalysts. Hydrogel embedding substantially decreased the adhesion force of gas bubbles and conferred exceptionally bubble-repellent properties to the underlying electrodes. Under practically relevant high-current conditions, superaerophobic hydrogel-embedded NiF demonstrated exceptional HER performance, even surpassing that of NiF modified with commercial Pt/C catalysts. At -0.9 V vs. reversible hydrogen electrode, for instance, the HG-NiF and Pt/C NiF permitted current densities of -1.35 and -0.84 A cm-2, respectively. We show the practical use of superaerophobic hydrogels for effective hydrogen generation, even in the absence of electrocatalysts comprised of metallic materials with lower environmental sustainability.