Recent advances, challenges, and prospects of electrochemical water-splitting technologies for net-zero transition

Ozcan, Hasan; El-Emam, Rami S.; Celik, Selahattin; Amini Horri, Bahman

doi:10.1016/j.clce.2023.100115

Cited by 4 publications

References 288 publications

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Scaling Up Stability: Navigating from Lab Insights to Robust Oxygen Evolution Electrocatalysts for Industrial Water Electrolysis

Meharban,

Lin,

et al. 2024

Advanced Energy Materials

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In the pursuit of sustainable hydrogen production via water electrolysis, paramount importance of electrocatalyst stability emerges as a defining factor for long‐term industrial viability. A thorough understanding and enhancement of stability not only ensure extended catalyst lifetimes but also pave the way for consistent and efficient hydrogen generation. This review focuses on the pivotal role of stability in determining the practical viability of oxygen evolution electrocatalysts (OECs) for large‐scale applications in water electrolysis for hydrogen production. The paper explores the pivotal role of stability over initial activity, citing examples and hypothetical scenarios. First, figures of merits for stability evaluation of the electrocatalyst are explained along with the available benchmarking protocols for stability evaluation. Further, the text delves into various strategies that can enhance the stability of the electrocatalyst which include self‐healing/regeneration pathway, oxygen evolution reaction (OER) mechanism optimization to achieve highly stable OER and stabilization of active metals atoms within the electrocatalyst to inhibit dissolution as a way forward for industrial application. The interplay of stability, activity, and cost is also explained to suit the industrial application of the electrocatalyst. Lastly, it outlines challenges, prospects, and future directions, presenting a guide for advancing OECs in the hydrogen generation landscape.

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Scaling Up Stability: Navigating from Lab Insights to Robust Oxygen Evolution Electrocatalysts for Industrial Water Electrolysis

Meharban,

Lin,

et al. 2024

Advanced Energy Materials

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Green Hydrogen Production From Non‐Traditional Water Sources: A Sustainable Energy Solution With Hydrogen Storage and Distribution

Qureshi,

Asif,

Khan

et al. 2024

The Chemical Record

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Green hydrogen development plays an essential role in creating a sustainable and environmentally conscious society while reducing reliance on traditional fossil fuels. Proton Exchange Membrane Water Electrolysers (PEMWEs), are sensitive to water quality, with various impurities impacting their efficiency, the quality of the hydrogen produced, and the device‘s lifespan. High‐purity water is required for PEM electrolyzers; Type II water, which is required for commercial electrolyzers, must have a resistivity greater than 1 MΩ cm, sodium, and chloride concentrations less than 5 μg/L, and total organic carbon (TOC) content less than 50 parts per billion. The majority of electrolyzers operate on freshwater, or total dissolved solids (TDS) <0.5 g/kg, whereas brackish, rainwater, wastewater, and seawater have TDSs of 1–35 g/kg, 0.01–0.15 g/kg, 0.5–2 g/kg, and 35–45 g/kg, respectively. This critical review offers, for the first time, a comprehensive overview of relevant impurities in operating electrolyzers and their impact. The findings of this study indicate that electrolysis‐based H2 processes are promising options that contribute to the H2 production capacity but require improvements to produce larger competitive volumes. In addition, the main challenges and opportunities for generating, storing, transporting, and distributing hydrogen, as well as large‐scale adoption are discussed.

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Commercialization Status of Electrocatalysis, Photocatalysis and Photoelectrocatalysis Processes

R.,

C.,

et al. 2024

Advances in Photocatalysis, Electrocatalysis and Photoelectrocatalysis for Hydrogen Production

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Hydrogen is a clean, energy dense and renewable fuel. Producing hydrogen through an economically feasible and potentially scalable path is of great interest. The highly sustainable methods for hydrogen production are electrolysis, photocatalysis, and photoelectrocatalysis, all of which have advantages and disadvantages associated with transition of laboratory-scale processes to the commercial scale. This chapter discusses the commercial status of the electrolysis, photocatalysis, and photoelectrocatalysis processes. To begin, the chapter discusses conventional methods of hydrogen production, such as steam methane reforming, partial oxidation, and coal gasification, and then goes on to discuss the commercial status of electrocatalytic hydrogen production and its challenges, economic viability, and competitiveness. Furthermore, the commercial status of the photocatalysis and photoelectrocatalysis processes are also discussed.

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Recent advances, challenges, and prospects of electrochemical water-splitting technologies for net-zero transition

Cited by 4 publications

References 288 publications

Scaling Up Stability: Navigating from Lab Insights to Robust Oxygen Evolution Electrocatalysts for Industrial Water Electrolysis

Scaling Up Stability: Navigating from Lab Insights to Robust Oxygen Evolution Electrocatalysts for Industrial Water Electrolysis

Green Hydrogen Production From Non‐Traditional Water Sources: A Sustainable Energy Solution With Hydrogen Storage and Distribution

Commercialization Status of Electrocatalysis, Photocatalysis and Photoelectrocatalysis Processes

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