Ir/IrOx/WO3 electrocatalysts for water splitting

Tan, Xiaohe; Gou, Wangyan; Liao, Liling; Ma, Yuanyuan; Qu, Yongquan

doi:10.1039/d3qm00550j

Cited by 6 publications

(2 citation statements)

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“…Such outstanding activity of 3D-IrO 2 /N@C was attributed to the unique hierarchical porosity for facilitated mass transfer, the large active surface area for enhanced interaction between active sites and reactants, and the synergistic effect between IrO 2 and N-doped carbon. Moreover, multimetal mixed oxides with even higher activity compared to individual metal Ir or IrO 2 have been reported recently. − For instance, Cho and collaborators prepared a novel Ir-based electrocatalyst of laminar Sr 2 IrO 4 -modified 6H phase SrIrO 3 (SrIrO-1100), as depicted in Figure d . XRD pattern (Figure e) confirmed the copresence of both quasi-2D Sr 2 IrO 4 and 3D 6H-SrIrO 3 phases, indicating the combination of quasi-2D and 3D Ir-based perovskites.…”

Section: Bifunctional Electrocatalysts For Overall Water Splittingmentioning

confidence: 86%

Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting

Quan,

Jiang,

Mei

et al. 2024

Chem. Rev.

117

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Electrocatalytic water splitting driven by renewable electricity has been recognized as a promising approach for green hydrogen production. Different from conventional strategies in developing electrocatalysts for the two half-reactions of water splitting (e.g., the hydrogen and oxygen evolution reactions, HER and OER) separately, there has been a growing interest in designing and developing bifunctional electrocatalysts, which are able to catalyze both the HER and OER. In addition, considering the high overpotentials required for OER while limited value of the produced oxygen, there is another rapidly growing interest in exploring alternative oxidation reactions to replace OER for hybrid water splitting toward energy-efficient hydrogen generation. This Review begins with an introduction on the fundamental aspects of water splitting, followed by a thorough discussion on various physicochemical characterization techniques that are frequently employed in probing the active sites, with an emphasis on the reconstruction of bifunctional electrocatalysts during redox electrolysis. The design, synthesis, and performance of diverse bifunctional electrocatalysts based on noble metals, nonprecious metals, and metal-free nanocarbons, for overall water splitting in acidic and alkaline electrolytes, are thoroughly summarized and compared. Next, their application toward hybrid water splitting is also presented, wherein the alternative anodic reactions include sacrificing agents oxidation, pollutants oxidative degradation, and organics oxidative upgrading. Finally, a concise statement on the current challenges and future opportunities of bifunctional electrocatalysts for both overall and hybrid water splitting is presented in the hope of guiding future endeavors in the quest for energy-efficient and sustainable green hydrogen production.

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Section: Bifunctional Electrocatalysts For Overall Water Splittingmentioning

confidence: 86%

Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting

Quan,

Jiang,

Mei

et al. 2024

Chem. Rev.

117

View full text Add to dashboard Cite

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“…, Pt-based, Ru-based, and Ir-based) have been explored to improve the efficiency of water splitting. 137–139 Alternatively, conventional OER has also been replaced by oxidation of sacrificial agents ( e.g. , urea, methanol, and hydrazine).…”

Section: Electrocatalytic Conversion Of Glucosementioning

confidence: 99%

Photo-, electro-, and photoelectro-catalytic conversion of glucose into high value-added products

Lu,

Zhang,

Shen

et al. 2024

Catal. Sci. Technol.

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Utilization of Cobalt and its Oxide/Hydroxide Mediated by Ionic Liquids/Deep Eutectic Solvents as Catalysts in Water Splitting

Zhang,

Wang,

Jin

et al. 2024

ChemistryOpen

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With the ever‐growing global demand for sustainable energy solutions, hydrogen has garnered significant attention as a clean, efficient, and renewable energy source. In the field of hydrogen production, catalyst research stands out as one of the foremost areas of focus. In recent years, the preparation of electrocatalysts using ionic liquids (ILs) and deep eutectic solvents (DESs) has attracted widespread attention. ILs and DESs possess unique physicochemical properties and are recognized as green media as well as functional materials. Cobalt‐based catalysts have proven to be efficient electrocatalysts for water splitting. Incorporating ILs or DESs into the preparation of cobalt‐based catalysts offers a remarkable advantage by allowing precise control over their structural design and composition. This control directly influences the adsorption properties of the catalyst's surface and the stability of reaction intermediates, thereby enabling enhanced control over reaction pathways and product selectivity. Consequently, the catalytic activity and stability of cobalt‐based catalysts can be effectively improved. In the process of preparing cobalt‐based catalysts, ILs and DESs can serve as solvents and templates. Owing to the good solubility of ILs and DESs, they can efficiently dissolve raw materials and provide a special nucleation and growth environment, obtaining catalysts with novel‐structures. The main focus of this review is to provide a detailed introduction to metal cobalt and its oxide/hydroxide derivatives in the field of water splitting, with a particular emphasis on the research progress achieved through the utilization of IL and DES. The aim is to assist readers in designing and synthesizing novel and high‐performance electrochemical catalysts.

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Ir/IrO_x/WO₃ electrocatalysts for water splitting

Abstract: Developing highly performed electrocatalysts for water splitting in both acidic and basic electrolytes is of significance for hydrogen production. Despite the great advances achieved, the design and synthesis of electrocatalysts...

Cited by 6 publications

References 50 publications

Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting

Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting

Photo-, electro-, and photoelectro-catalytic conversion of glucose into high value-added products

Utilization of Cobalt and its Oxide/Hydroxide Mediated by Ionic Liquids/Deep Eutectic Solvents as Catalysts in Water Splitting

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