Anion-Exchange-Membrane Electrolysis with Alkali-Free Water Feed

作者：Mohsin Muhyuddin, Carlo Santoro, Luigi Osmieri, Valerio C.A. Ficca, Ariel Friedman, Karam Yassin, Gioele Pagot, Enrico Negro, Anastasiia Konovalova, Grace A. Lindquist, Liam P. Twight, Minkyoung Kwak, Enrico Berretti, Vito Di Noto, Frédéric Jaouen, Lior Elbaz, Dario R. Dekel, Piercarlo Mustarelli, Shannon Wachter Boettcher, Alessandro Lavacchi, Plamen B. Atanassov · 发表于：Chemical Reviews · 年份：2025 · DOI：10.1021/acs.chemrev.4c00466 · 被引用次数：101 · 研究领域：Membrane-based Ion Separation Techniques、Advanced battery technologies research、Fuel Cells and Related Materials

Hydrogen is a green and sustainable energy vector that can facilitate the large-scale integration of intermittent renewable energy, renewable fuels for heavy transport, and deep decarbonization of hard-to-abate industries. Anion-exchange-membrane water electrolyzers (AEM-WEs) have several achieved or expected competitive advantages over other electrolysis technologies, including the use of precious metal-free electrocatalysts at both electrodes, fluorine-free hydrocarbon-based ionomeric membranes and bipolar plates based on inexpensive materials. Contrasting the analogous proton-exchange-membrane system (PEM-WE), where pure water is circulated (no support electrolyte), the current generation of AEM-WEs necessitates the circulation of a dilute aqueous alkaline electrolyte for reaching high energy efficiency and durability. For several reasons, including but not limited to lower cost of balance-of-plant, lower operating cost and improved device's lifetime, achieving high cell efficiency and performance using an alkali-free water feed is highly desirable. In this review, we develop and build a foundational understanding of AEM-WEs operating with pure water, as well as discuss the effects of operating with natural water feeds like seawater. After a discussion of the possible advantages of pure-water-fed AEM-WEs, we cover the thermodynamic and kinetic processes involved in AEM-WE, followed by a detailed review of materials and components and their integration in the device. We hig...