For the first time, we report on micro- and nanostructured Ti surfaces produced by ultrashort-pulse laser processing followed by sputter deposition of Pt aiming at efficient cathode electrodes for alkaline water electrolysis. We studied the laser processing-induced surface morphology, the elemental composition of the surface, the specific surface increase, the wetting behavior as well as the activity of the hydrogen evolution reaction. It is demonstrated that ultrashort-pulse laser structuring in combination with thin layer catalyst deposition can dramatically boost the performance of cathodes for the hydrogen evolution reaction due to the enormous increase in specific surface in combination with superhydrophilic and superwetting properties leading to a rapid gas bubble detachment.

我们首次报道了通过超短脉冲激光加工，然后溅射沉积Pt制备的微结构和纳米结构的Ti表面，其目的是用于有效的碱性水电解阴极。我们研究了激光加工引起的表面形态，表面的元素组成，比表面的增加，润湿行为以及析氢反应的活性。结果表明，超短脉冲激光结构与薄层催化剂沉积相结合可以显着提高阴极用于氢释放反应的性能，这是由于比表面积的极大增加以及超亲水性和超润湿性共同导致了气泡的快速脱离。 。