Stabilisation of grid assistance for a renewable hydrogen generation system by min‐projection strategy

Lattice strain plays a critical role in regulating the electronic structure and improving the performance of catalysts. Here, Ir−IrO2/C catalysts with different iridium content are obtained by annealing Ir/C in air. The growth of IrO2 on Ir nanoparticles can form a core–shell structure and introduces strain at their interface. The local compressive strain on Ir nanoparticles is 7.2 % in the optimal Ir−IrO2/C sample with Ir content of 14.3 % (Ir−IrO2/C‐3), which regulates the adsorption energy of intermediates and improves the catalytical performance of oxygen evolution reaction (OER). The overpotential of Ir−IrO2/C‐3 at 10 mA ⋅ cm−2 is 264 mV in acidic electrolyte, 35 mV lower than that of Ir−IrO2/C with no lattice strain. Ir−IrO2/C‐3 also exhibits the highest mass activity of 1304 A ⋅ gIr−1 at 1.55 V vs. RHE, which is higher than those of commercial catalysts. Furthermore, the activity of Ir−IrO2/C‐3 can maintain 42 h with the potential increase of only 18 mV at 10 mA ⋅ cm−2, proving that the lattice strain can also effectively improve the electrochemical stability.

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Lattice Strain Enhances the Activity of Ir−IrO₂/C for Acidic Oxygen Evolution Reaction

Wang

Zhu

et al. 2022

ChemElectroChem

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Optimal sizing of a grid-assisted wind-hydrogen system

Clúa

Mantz

Battista

2018

Energy Conversion and Management

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Optimal Control of a Grid Assisted Photovoltaic-Hydrogen Production System

et al. 2019

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Stabilisation of grid assistance for a renewable hydrogen generation system by min‐projection strategy

Cited by 7 publications

References 27 publications

Lattice Strain Enhances the Activity of Ir−IrO₂/C for Acidic Oxygen Evolution Reaction

Lattice Strain Enhances the Activity of Ir−IrO₂/C for Acidic Oxygen Evolution Reaction

Optimal sizing of a grid-assisted wind-hydrogen system

Optimal Control of a Grid Assisted Photovoltaic-Hydrogen Production System

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Stabilisation of grid assistance for a renewable hydrogen generation system by min‐projection strategy

Cited by 7 publications

References 27 publications

Lattice Strain Enhances the Activity of Ir−IrO2/C for Acidic Oxygen Evolution Reaction

Lattice Strain Enhances the Activity of Ir−IrO2/C for Acidic Oxygen Evolution Reaction

Optimal sizing of a grid-assisted wind-hydrogen system

Optimal Control of a Grid Assisted Photovoltaic-Hydrogen Production System

Contact Info

Product

Resources

About

Lattice Strain Enhances the Activity of Ir−IrO₂/C for Acidic Oxygen Evolution Reaction

Lattice Strain Enhances the Activity of Ir−IrO₂/C for Acidic Oxygen Evolution Reaction