Unraveling the Fundamental Concepts of Superaerophobic/Superhydrophilic Electrocatalysts for Highly Efficient Water Electrolysis: Implications for Future Research

Shen, Jingjun; Zheng, Yihao; Lei, Wen; Shao, Huaiyu

doi:10.1002/celc.202300465

Cited by 4 publications

(1 citation statement)

References 56 publications

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“…Water splitting emerges as one of the most environmentally friendly and sustainable methods for hydrogen production. However, the efficiency of water splitting crucially depends on the development of electrocatalytic materials [6][7][8]. The core of water electrolysis lies in the electrochemical reactions occurring at the electrode surfaces.…”

Section: Introductionmentioning

confidence: 99%

Bubbles Management for Enhanced Catalytic Water Splitting Performance

Zhang,

Gu,

Wang

et al. 2024

Catalysts

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Water splitting is widely acknowledged as an efficient method for hydrogen production. In recent years, significant research efforts have been directed towards developing cost-effective electrocatalysts. However, the management of bubbles formed on the electrode surface during electrolysis has been largely overlooked. These bubbles can impede the active sites, resulting in decreased catalytic performance and stability, especially at high current densities. Consequently, this impediment affects the energy conversion efficiency of water splitting. To address these challenges, this review offers a comprehensive overview of advanced strategies aimed at improving catalytic performance and mitigating the obstructive effects of bubbles in water splitting. These strategies primarily involve the utilization of experimental apparatus to observe bubble-growth behavior, encompassing nucleation, growth, and detachment stages. Moreover, the review examines factors influencing bubble formation, considering both mechanical behaviors and internal factors. Additionally, the design of efficient water-splitting catalysts is discussed, focusing on modifying electrode-surface characteristics. Finally, the review concludes by summarizing the potential of bubble management in large-scale industrial hydrogen production and identifying future directions for achieving efficient hydrogen production.

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Section: Introductionmentioning

confidence: 99%

Bubbles Management for Enhanced Catalytic Water Splitting Performance

Zhang,

Gu,

Wang

et al. 2024

Catalysts

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Science and Engineering of Superaerophobic Surfaces for Electrochemical Gas—Evolving Reactions: A Review of Recent Advances and Perspective

Abedi,

Barati Darband

2024

Advanced Sustainable Systems

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In energy conversion processes and various industries, gas evolution reactions (GERs) play an important role. To achieve a future without fossil fuels, the development of high‐efficiency electrocatalysts is necessary, as they directly affect the catalytic performance and overall efficiency of reactions. In addition to the discovery of highly active catalysts, the rapid removal of gaseous products on the electrode surface is equally important for GERs. The adherence of bubbles to the electrode surface introduces substantial resistance, significantly diminishing the system's efficiency. One promising solution to reduce the adhesion of bubbles is the development of electrocatalysts with superaerophobic levels. These surface structures, such as nanotubes, nanosheets, and nanowires, prevent gas bubbles from adhering and promote their rapid removal from the electrode. The aim of this review is first to obtain a deep understanding of mechanisms related to the creation of superaerophobic surfaces, including their characteristics, methods of creation, and bubble detachment behavior. Furthermore, recent advances in the application of these surfaces in various gas‐evolving reactions to enhance electrocatalytic properties are discussed. By taking this innovative approach, valuable insights can be gained into advancing the field of electrocatalysis and driving progress toward sustainable energy solutions.

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Graphene‐Transition Metal Electrocatalysts for Sustainable Water Electrolysis

Tripathi,

Verma,

Sinha

et al. 2024

ChemistrySelect

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Transition metal compounds (TMCs) are potentially fruitful substitutes for noble metals for electrocatalytic splitting of water due to their intrinsic electrocatalytic activity, modifiable morphology, tunable electronic structure and their earth‐abundance. The combination of TMCs with graphene improves the dispersion of loaded catalysts, providing more catalytic active sites, enhancing the conductivity of hybrids, affording accelerated charge‐transfer kinetics, and minimizing catalyst bleaching, aggregation, and sintering under harsh reaction conditions. Additionally, graphene incorporation into TMCs modulates the electronic structure of active centers because of the synergistic interaction between them, thereby improving their catalytic performance. This review paper focuses on the recent progress made in designing different graphene‐transition metal‐based materials that can be used in the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and overall water splitting (OWS). In‐situ characterization methodologies and DFT calculations that facilitate catalyst development are discussed elaborately. Finally, the advancements made in the development of graphene‐supported transition metal compounds for use in a functional water electrolyzer have been explored. In conclusion, a few specific recommendations have been made about the current challenges related to the widespread production of effective HER/OER electrocatalysts for water electrolysis.

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Unraveling the Fundamental Concepts of Superaerophobic/Superhydrophilic Electrocatalysts for Highly Efficient Water Electrolysis: Implications for Future Research

Cited by 4 publications

References 56 publications

Bubbles Management for Enhanced Catalytic Water Splitting Performance

Bubbles Management for Enhanced Catalytic Water Splitting Performance

Science and Engineering of Superaerophobic Surfaces for Electrochemical Gas—Evolving Reactions: A Review of Recent Advances and Perspective

Graphene‐Transition Metal Electrocatalysts for Sustainable Water Electrolysis

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