Aili, David Kraglund, Mikkel Rykær Rajappan, Sinu C. Serhiichuk, Dmytro Xia, Yifan Deimede, Valadoula Kallitsis, Joannis Bae, Chulsung Jannasch, Patric Henkensmeier, Dirk Jensen, Jens Oluf 2024-01-12T02:30:53Z 2024-01-12T02:30:53Z 2023-03-29 2023-04 2380-8195 https://pubs.kist.re.kr/handle/201004/75753 Multi-gigawatt-scale hydrogen production by water electrolysis is central in the green transition when it comes to storage of energy and forming the basis for sustainable fuels and materials. Alkaline water electrolysis plays a key role in this context, as the scale of implementation is not limited by the availability of scarce and expensive raw materials. Even though it is a mature technology, the new technological context of the renewable energy system demands more from the systems in terms of higher energy efficiency, enhanced rate capability, as well as dynamic, part-load, and differential pressure operation capability. New electrode separators that can support high currents at small ohmic losses, while effectively suppressing gas crossover, are essential to achieving this. This Focus Review compares the three main development paths that are currently being pursued in the field with the aim to identify the advantages and drawbacks of the different approaches in order to illuminate rational ways forward. English American Chemical Society Electrode Separators for the Next-Generation Alkaline Water Electrolyzers Article 10.1021/acsenergylett.3c00185 1 ACS Energy Letters, v.8, no.4, pp.1900 - 1910 ACS Energy Letters 8 4 1900 1910 Y scie scopus 000959678200001 Chemistry, Physical Electrochemistry Energy & Fuels Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Science & Technology - Other Topics Materials Science Review ANION-EXCHANGE MEMBRANES SOLVATING POLYMER ELECTROLYTE MANUFACTURING PARAMETERS DOPED POLYBENZIMIDAZOLE POTASSIUM HYDROXIDE HYDROGEN STABILITY CATIONS