Porous metal catalysts are considered as excellent catalysts for water electrolysis because of their large surface area, tunable pore size, abundant active sites and facilitated charge/mass transfer channels. Herein, a Au₃Pt alloy film with interconnected network pores was in situ grown on Ni foam (pAu₃Pt/NF) by a micelle-assisted replacement route. Benefiting from the interwoven network porous structure and bimetallic component, pAu₃Pt/NF exhibits remarkable electrocatalytic HER activity that delivers an overpotential of −40.1 mV at a current density of 50 mA cm⁻² with a Tafel slope of 42.3 mV dec⁻¹ in 1.0 M KOH electrolyte. The proposed strategy paves the way to the rational design of self-supporting interwoven network porous nanomaterials for high-efficiency water electrolysis and beyond.

中文翻译：

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镍泡沫上的相互连接的多孔Au3Pt膜：碱性氢析出反应的有效电催化剂

多孔金属催化剂因其较大的表面积，可调节的孔径，丰富的活性位点和便利的电荷/质量转移通道而被认为是用于水电解的出色催化剂。在此，通过胶束辅助的置换途径在Ni泡沫（pAu ₃ Pt / NF）上原位生长具有互连的网络孔的Au ₃ Pt合金膜。得益于交织的网络多孔结构和双金属成分，pAu ₃ Pt / NF具有出色的电催化HER活性，在50 mA cm ^-2的电流密度下，Tafel斜率为42.3 mV dec ^-1时，其过电位为-40.1 mV。在1.0 M KOH电解液中。所提出的策略为高效水电解及更高效率的自支撑交织网络多孔纳米材料的合理设计铺平了道路。