Essentials of High Performance Water Electrolyzers – From Catalyst Layer Materials to Electrode Engineering

Language
en
Document Type
Article
Issue Date
2022-03-22
First published
2021-11-23
Issue Year
2021
Authors
Pham, Chuyen Van
Escalera‐López, Daniel
Mayrhofer, Karl
Cherevko, Serhiy
Thiele, Simon
Editor
Publisher
Wiley-VCH GmbH
Abstract

Abstract Proton‐exchange membrane water electrolyzers (PEMWEs) will play a key role in future sustainable hydrogen production for mobility, households or chemical industry. Yet, the anode in PEMWEs, where the pivotal oxygen evolution reaction takes place, needs further improvement in terms of performance and cost. Both catalyst materials and electrode structure have to be optimized in order to inhibit degradation and reduce noble metal loadings. This review focuses on a holistic approach, covering all catalyst material, electrode structure, and transport layers within the framework of an overall electrode design, which not only optimizes the catalyst but also, all components of the electrode in conjunction. This review defines the goals for performance metrics of future PEMWEs in terms of power density and durability of the anode. Moreover, it summarizes manufacturing techniques and approaches that have a chance to be upscaled to meet the megawatt deployment of PEMWEs. The different aspects described jointly in this review such as novel catalyst system with higher intrinsic and structural performance or graded porous transport layers shall help to advance a next generation of electrodes.

Journal Title
Advanced Energy Materials
Volume
11
Issue
44
Citation

Advanced Energy Materials 11.44 (2021): 2101998. https://onlinelibrary.wiley.com/doi/10.1002/aenm.202101998

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