Laboratory of Nanotechnology on Surfaces and Plasma, Institute of Materials Science of Seville (CSIC-University Sevilla), Av. Américo Vespucio 49, E-41092 Sevilla, Spain.
Department of Chemical Engineering, School of Chemical Sciences and Technologies, University of Castilla-La Mancha, Avda. Camilo José Cela 12, E-13071 Ciudad Real, Spain.
Molecules. 2021 Oct 20;26(21):6326. doi: 10.3390/molecules26216326.
Water electrolysis to obtain hydrogen in combination with intermittent renewable energy resources is an emerging sustainable alternative to fossil fuels. Among the available electrolyzer technologies, anion exchange membrane water electrolysis (AEMWE) has been paid much attention because of its advantageous behavior compared to other more traditional approaches such as solid oxide electrolyzer cells, and alkaline or proton exchange membrane water electrolyzers. Recently, very promising results have been obtained in the AEMWE technology. This review paper is focused on recent advances in membrane electrode assembly components, paying particular attention to the preparation methods for catalyst coated on gas diffusion layers, which has not been previously reported in the literature for this type of electrolyzers. The most successful methodologies utilized for the preparation of catalysts, including co-precipitation, electrodeposition, sol-gel, hydrothermal, chemical vapor deposition, atomic layer deposition, ion beam sputtering, and magnetron sputtering deposition techniques, have been detailed. Besides a description of these procedures, in this review, we also present a critical appraisal of the efficiency of the water electrolysis carried out with cells fitted with electrodes prepared with these procedures. Based on this analysis, a critical comparison of cell performance is carried out, and future prospects and expected developments of the AEMWE are discussed.
水电解结合间歇可再生能源是一种新兴的可持续替代化石燃料的方法。在可用的电解槽技术中，阴离子交换膜水电解（AEMWE）因其与其他更传统的方法（如固体氧化物电解槽和碱性或质子交换膜水电解槽）相比具有优势而受到了广泛关注。最近，AEMWE 技术取得了非常有前景的成果。本文主要关注膜电极组件的最新进展，特别关注催化剂在气体扩散层上的涂覆方法，这在以前的文献中并没有报道过。用于制备催化剂的最成功的方法包括共沉淀、电沉积、溶胶-凝胶、水热、化学气相沉积、原子层沉积、离子束溅射和磁控溅射沉积技术，都有详细的描述。除了对这些程序进行描述外，在本文中，我们还对用这些程序制备的电极组装的电池进行的水电解效率进行了批判性评估。在此分析的基础上，对电池性能进行了批判性比较，并讨论了 AEMWE 的未来前景和预期发展。
