Water electrolysis using renewable energy sources such as solar and wind power has the advantage of producing hydrogen with high efficiency and zero emissions. Solid polymer electrolyte water electrolysis (SPEWE) is divided into anion exchange membrane electrolysis (AEMWE) carried out in an alkaline environment and proton exchange membrane electrolysis (PEMWE) carried out in an acidic environment. Research on the electrocatalysts used in these electrolysis procedures has focused on the development of transition metal-based catalysts with catalytic activity, high stability, and low cost that can replace the currently used noble-metal based electrocatalysts. Among the various electrocatalyst fabrication methods, electrodeposition can be used to fabricate catalysts in a simple manner at low cost and high purity. In addition, catalysts can be directly electrodeposited onto a substrate such as a gas diffusion layer, simplifying the electrode fabrication process and readily enabling the advantageous control of the physical, chemical, structural, and compositional properties of the catalyst. In this paper, we summarize the characteristics and structures of the water electrolysis catalysts prepared by the electrodeposition method based on recent research studies that suggest their applicability to practical water electrolysis systems in the future.

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用于聚合物电解质水电解的电沉积制备催化剂

使用太阳能和风能等可再生能源进行水电解具有高效、零排放制氢的优势。固体聚合物电解质水电解（SPEWE）分为在碱性环境下进行的阴离子交换膜电解（AEMWE）和在酸性环境下进行的质子交换膜电解（PEMWE）。对这些电解过程中使用的电催化剂的研究集中在开发具有催化活性、高稳定性和低成本的过渡金属基催化剂，以替代目前使用的贵金属基电催化剂。在各种电催化剂制备方法中，电沉积可以以简单的方式以低成本和高纯度制备催化剂。此外，催化剂可以直接电沉积在气体扩散层等基材上，简化了电极的制造过程，并容易控制催化剂的物理、化学、结构和组成特性。在本文中，我们总结了电沉积法制备的水电解催化剂的特性和结构，基于最近的研究表明它们在未来的实际水电解系统中的适用性。