Anion exchange membrane water electrolysis for sustainable large‐scale hydrogen production. Issue 1 (14th July 2022)

• Record Type: Journal Article
• Authors: Lee, Sol A; Kim, Jaehyun; Kwon, Ki Chang; Park, Sun Hwa; Jang, Ho Won
• Is Part Of: Carbon neutralization. Volume 1:Issue 1(2022)
• Page Start: 26
• Page End: 48
• Publication Date: 2022-07-14
• Subjects: anion exchange membrane -- catalyst -- hydrogen -- membrane electrode assembly -- water electrolysis; Carbon sequestration; Carbon dioxide mitigation; Carbon dioxide -- Environmental aspects; Clean energy; Periodicals; 363.73874
• DOI: 10.1002/cnl2.9
• Languages: English
• ISSNs: 2769-3325

Abstract

Abstract: The development of sustainable energy technology has received considerable attention to meet the increasing energy demands and realize carbon neutrality. Hydrogen is a promising alternative energy source to replace fossil fuels and mitigate environmental issues. However, most hydrogen is produced by reforming fossil fuels, called gray hydrogen, and the production of gray hydrogen emits a large amount of carbon dioxide. As a sustainable approach, water electrolysis technology has been developed to produce high‐purity hydrogen, called green hydrogen. Among various technologies, water electrolysis equipped with an anion exchange membrane has been regarded as an attractive pathway for large‐scale H2 production at a low cost. The status of anion exchange membrane water electrolyzers is approaching toward megawatt‐scale H2 production by companies, which has the potential to become competitive technology for existing water electrolyzers (alkaline electrolyzer, proton exchange membrane electrolyser). This review article represents recent advances in the development of major components (membrane, catalyst, membrane electrode assembly) of anion exchange water electrolyzers. By recognizing the current water electrolysis performance and solving the remaining challenges, anion exchange membrane electrolysis can be a leading technology for green hydrogen production. Abstract : Anion exchange membrane water electrolysis (AEMWE) is a technology that complements the disadvantages of alkaline water electrolysis and proton exchange membrane water electrolysis. However, AEMWE possesses several challenges to be overcome for sustainable large‐scale hydrogen production. Component development and optimization of cell operation are prerequisites for the practical AEMWEs with high stability and current density.