Heterointerface Created on Au‐Cluster‐Loaded Unilamellar Hydroxide Electrocatalysts as a Highly Active Site for the Oxygen Evolution Reaction

Abstract

Figure 7. a) IR absorbance on Au/ULDH−NiFe and ULDH−NiFe in the presence of H 2 O vapor at 50 °C and b) their difference. c) RAIRS−MES absorbance for Au/ULDH−NiFe under 0.1 MPa H 2 O vapor at 50 °C and d) the difference of RAIRS-MES signals observed on Au/ULDH−NiFe from those on ULDH−NiFe.

Tailoring Bond Microenvironments and Reaction Pathways of Single‐Atom Catalysts for Efficient Water Electrolysis

“…[22] In contrast to the AEM pathway, LOM provides a distinct reaction pathway with OÀ O coupling (Scheme 2e); the reaction energy is not limited by the adsorption energy scaling relationship. [23] Furthermore, a new reaction pathway was proposed recently, and it is consistent with the theoretical understanding of the OER mechanism. which follows a binuclear nucleation mechanism where the adjacent top surface oxygen atom is at the fixed adsorption site, while the metal atom below plays an indirect role and maintains its saturated sixfold oxygen coordination during all steps (Scheme 2f).…”

Self-Supporting Co/CeO2 Heterostructures for Ampere-Level Current Density Alkaline Water Electrolysis

“…Interfacial interactions can precisely regulate the electronic and geometric configuration of the active sites, which significantly affects the performance and durability of the catalyst . Heterointerface engineering is an attractive strategy to enhance catalyst performance. , On one hand, heterostructures can optimize the adsorption/desorption energies of catalytic intermediates, increase the active surface area, and facilitate electron transfer, thereby enhancing the catalytic effect. , On the other hand, the strong electronic interactions between the heterointerfaces can hinder the separation of the two phases, thereby enhancing the catalytic durability. , In addition, the non-separated two phases in heterostructures ensure the persistent maintenance of the high activity of the catalyst. However, great challenges remain in constructing highly reactive and robust heterostructures with simultaneous favorable HER and OER efficiencies.…”

“…25 Heterointerface engineering is an attractive strategy to enhance catalyst performance. 26,27 On one hand, heterostructures can optimize the adsorption/desorption energies of catalytic intermediates, increase the active surface area, and facilitate electron transfer, thereby enhancing the catalytic effect. 28,29 On the other hand, the strong electronic interactions between the heterointerfaces can hinder the separation of the two phases, thereby enhancing the catalytic durability.…”

Facile synthesis approach of bifunctional Co–Ni–Fe oxyhydroxide and spinel oxide composite electrocatalysts from hydroxide and layered double hydroxide composite precursors

“…The performances of current ZABs hardly satisfy the requirements of practical applications. [3][4][5] Thus, tremendous efforts have been devoted to developing highly active bifunctional OER and ORR electrocatalysts. [6][7][8][9][10] Currently, Ru and Pt-based precious metal electrocatalysts have been reported as the best OER and ORR catalysts.…”