Reducing the Pt loading amount in an electrode is essential for the commercialization of water electrolyzers. We report a simple method for the fabrication of a low Pt loading electrode, using an electrochemical method named self-terminated electrodeposition, at room temperature and under ambient pressure. Controlling the deposition conditions enables the quenching deposition of Pt on a C-coated gas diffusion layer by H passivation at a highly negative potential. Repeating deposition pulses facilitate the facile control of the Pt surface composition and electrochemical surface area, which significantly affects their catalytic performance for the hydrogen evolution reaction. The results presented show that the aforementioned Pt electrode can be a promising cathode for use in membrane-based water electrolyzers.

中文翻译：

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重复脉冲电沉积制备的低铂载量析氢电极

减少电极中的 Pt 负载量对于水电解槽的商业化至关重要。我们报告了一种制造低 Pt 负载电极的简单方法，使用名为自终止电沉积的电化学方法，在室温和环境压力下。控制沉积条件能够在高负电位下通过 H 钝化在 C 涂层气体扩散层上淬火沉积 Pt。重复沉积脉冲有助于轻松控制 Pt 表面成分和电化学表面积，这显着影响其对析氢反应的催化性能。结果表明，上述 Pt 电极可以成为用于膜基水电解槽的有前途的阴极。