2024
DOI: 10.1002/adfm.202414446
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Architecting Gradient Hierarchically Porous Catalyst via Negative Mixing Enthalpy High‐Entropy Alloy for Durable Water Splitting at Ampere‐Level Current Density

Qiqin Zhang,
Qi Guo,
Yanan Zhang
et al.

Abstract: Gradient hierarchically porous structures are effective for enhancing catalytic reactions due to their capability of enabling fast mass transfer from solutions to inner active sites. However, facile and rational designing of the construction with uniform spatial gradients and high stability remains challenging. Here, a self‐supporting high‐entropy alloy (HEA) catalyst with a unique triple‐scale gradient porosity based on physical metallurgy is reported. The hierarchically porous structure of the catalyst can b… Show more

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