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Steam electrolysis for green hydrogen generation. State of the art and research perspective

Abstract: With renewable energy sources projected to become the dominant source of electricity, hydrogen has emerged as a crucial energy carrier to mitigate their intermittency issues. Water electrolysis is the most developed alternative to generate green hydrogen so far. However, in the past two decades steam electrolysis has attracted increasing interest and aims to become a key player in the portfolio of electrolytic hydrogen. In practice, steam electrolysis follows two distinct operational approaches: Solid Oxide Electrolysis Cell (SOEC) and Proton Exchange Mem brane (PEM) at high temperature. For both technologies, this work analyses critical cell components outlining material characteristics and degradation issues. The influence of operational conditions on the performance and cell durability of both technologies is thoroughly reviewed. The analytical comparison of the two electrolysis alternatives underscores their distinct advantages and drawbacks, highlighting their niche of applications: SOECs thrive in high temperature industries like steel production and nuclear power plants whereas PEM steam elec trolysis suits lower temperature applications such as textile and paper. Being PEM steam electrolysis less explored, this work ends up by suggesting research lines in the domain of i) cell components (membranes, catalysts and gas diffusion layers) to optimize and scale the technology, ii) integration strategies with renewable energies and iii) use of seawater as feedstock for green hydrogen production.

 Autoría: Norman E.A., Maestre V.M., Ortiz A., Ortiz I.,

 Fuente: Renewable and Sustainable Energy Reviews, 2024, 202, 114725

 Editorial: Elsevier Limited

 Fecha de publicación: 01/09/2024

 Nº de páginas: 18

 Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.rser.2024.114725

 ISSN: 1364-0321

 Proyecto español: PID2021-123120OB-I00

 Proyecto europeo: info:eu-repo/grantAgreement/EC/INTERREG ATLANTIC AREA/EAPA_0018%2F2022/EU/Plastic circularity through an efficient detection, collection, and valorization into Hydrogen and value-added products/PLAST4H2/

 Url de la publicación: https://doi.org/10.1016/j.rser.2024.114725