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      Green hydrogen from anion exchange membrane water electrolysis: a review of recent developments in critical materials and operating conditions

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          Abstract

          Hydrogen production using water electrolysers equipped with an anion exchange membrane, a pure water feed and cheap components (catalysts and bipolar plates) can challenge proton exchange membrane electrolysis systems as the state of the art.

          Abstract

          Hydrogen production using water electrolysers equipped with an anion exchange membrane (AEM), a pure water feed and cheap components such as platinum group metal-free catalysts and stainless steel bipolar plates (BPP) can challenge proton exchange membrane (PEM) electrolysis systems as the state of the art. For this to happen the performance of the AEM electrolyzer must match the compact design, stability, H 2 purity and high current densities of PEM systems. Current research aims at bringing AEM water electrolysis technology to an advanced level in terms of electrolysis cell performance. Such technological advances must be accompanied by demonstration of the cost advantages of AEM systems. The current state of the art in AEM water electrolysis is defined by sporadic reports in the academic literature mostly dealing with catalyst or membrane development. The development of this technology requires a future roadmap for systematic development and commercialization of AEM systems and components. This will include basic and applied research, technology development & integration, and testing at a laboratory scale of small demonstration units (AEM electrolyzer shortstacks) that can be used to validate the technology (from TRL 2–3 currently to TRL 4–5). This review paper gathers together recent important research in critical materials development (catalysts, membranes and MEAs) and operating conditions (electrolyte composition, cell temperature, performance achievements). The aim of this review is to identify the current level of materials development and where improvements are required in order to demonstrate the feasibility of the technology. Once the challenges of materials development are overcome, AEM water electrolysis can drive the future use of hydrogen as an energy storage vector on a large scale (GW) especially in developing countries.

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          Most cited references5

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          Ion Exchange

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            Ullmann’s Encyclopedia of Industrial Chemistry

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              Ullman’s Encyclopedia of Industrial Chemistry

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                Author and article information

                Contributors
                (View ORCID Profile)
                (View ORCID Profile)
                Journal
                SEFUA7
                Sustainable Energy & Fuels
                Sustainable Energy Fuels
                Royal Society of Chemistry (RSC)
                2398-4902
                May 6 2020
                2020
                : 4
                : 5
                : 2114-2133
                Affiliations
                [1 ]Istituto di Chimica dei Composti Organometallici (CNR-ICCOM)
                [2 ]50019 Sesto Fiorentino
                [3 ]Italy
                [4 ]University of Chemistry and Technology, Prague
                [5 ]Department of Inorganic Technology
                [6 ]Prague 6
                [7 ]Czech Republic
                [8 ]Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM
                [9 ]Branch Lab Dresden
                [10 ]Dresden
                [11 ]Germany
                [12 ]Leibniz-Institut für Polymerforschung Dresden e.V.
                [13 ]D-01069 Dresden
                Article
                10.1039/C9SE01240K
                27b859c7-bc10-4c00-9039-308348e36947
                © 2020

                http://creativecommons.org/licenses/by-nc/3.0/

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