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Non-noble metal-based electro-catalyst for the oxygen evolution reaction (OER): Towards an active & stable electro-catalyst for PEM water electrolysis

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dc.contributor.author Pandey, Jay
dc.date.accessioned 2025-07-23T05:14:46Z
dc.date.available 2025-07-23T05:14:46Z
dc.date.issued 2024
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S0360319924002441
dc.identifier.uri http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/19054
dc.description.abstract Among water electrolysis methods, proton exchange membrane electrolyzers (PEMWEs) stand out for their potential to generate high-purity hydrogen with remarkable efficiency and dynamic response, making them a cornerstone technology for the sustainable hydrogen economy. However, a key bottleneck lies in the slow reaction rate of the oxygen evolution reaction (OER) at the anode, a four-electron transfer process that significantly throttles the system's full potential. This significantly impacts overall efficiency and calls for unfolding stable, durable, and highly active electrocatalysts that are cost-effective. However, the inherent acidity generated by the OER itself complicates this task. Noble metal catalysts like iridium (Ir) and ruthenium (Rh), pure or combined with other elements, exhibit excellent activity in the acidic OER environment. However, their high cost hinders large-scale PEMWE deployment. Therefore, extensive research has concentrated on non-noble metal alternatives, particularly transition metal oxides (monometallic and polymetallic) and carbon-based materials. This comprehensive review meticulously examines the emerging progress in non-noble metal electrocatalysts designed for low-pH OER conditions within PEMWEs. Following an introductory classification of water electrolyzer technologies, it explores how factors such as structure and synthesis route modulate the crucial performance parameters across diverse catalyst groups. Drawing upon these insights, the review also evaluates the current challenges and outlines promising avenues for future research. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Chemical engineering en_US
dc.subject PEM water electrolyzer en_US
dc.subject Green hydrogen en_US
dc.subject Electro-catalyst en_US
dc.subject Oxygen evolution reaction (OER) en_US
dc.title Non-noble metal-based electro-catalyst for the oxygen evolution reaction (OER): Towards an active & stable electro-catalyst for PEM water electrolysis en_US
dc.type Article en_US


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