Powerful, efficient, and corrosion-resistant electrocatalysts are in need to achieve high-current-density neutral seawater hydrogen evolution. Here, a novel strategy through strong metal-support interaction (SMSI) and incorporation of Pt to construct PtNb-Nb₂O₅ clusters @C was developed with stable high-current-density neutral seawater hydrogen evolution property for the first time. SMSI prevents agglomeration and corrosion of nanomaterials. Pt sites were proposed to play an anabranch role by binding H* to stabilize the Nb valence state and prevent water dissociation incapacitation. The optimized PtNb-Nb₂O₅ @CC delivers low overpotentials of 440 mV (500 mA cm⁻²) and 570 mV (1000 mA cm⁻²) in neutral seawater and has 360 h excellent durability at 500 mA cm⁻². In-situ Fourier transform infrared spectroscopy (FTIR), in-situ Raman spectroscopies and theoretical calculations supported the hydrogen evolution reaction (HER) mechanism. PtNb-Nb₂O₅ heterogeneous interface provided more active sites for water dissociation. OH* adsorbed on Nb sites in stable Nb₂O₅, and H* adsorbed on Nb sites and desorbed as H₂ on Pt sites in stable PtNb. Overall, this work not only first achieves stable high-current-density neutral seawater hydrogen evolution property, but also opens a new opportunity to explore SMSI and incorporation of Pt to prevent agglomeration, corrosion, and water dissociation incapacitation for catalytic applications under high current densities.

需要强大、高效和耐腐蚀的电催化剂来实现高电流密度的中性海水析氢。在这里，首次开发了一种通过强金属-载体相互作用（SMSI）和掺入Pt来构建PtNb-Nb ₂ O ₅簇@C的新策略，该策略具有稳定的高电流密度中性海水析氢特性。SMSI 可防止纳米材料的团聚和腐蚀。提出 Pt 位点通过结合 H* 来稳定 Nb 价态并防止水离解失能，从而发挥分枝作用。优化的 PtNb-Nb ₂ O ₅ @CC 提供 440 mV (500 mA cm ^-2 ) 和 570 mV (1000 mA cm ^-2) 在中性海水中，在 500 mA cm ^-2下具有 360 小时出色的耐用性。原位傅里叶变换红外光谱 (FTIR)、原位拉曼光谱和理论计算支持了析氢反应 (HER) 机制。PtNb-Nb ₂ O ₅异质界面为水解离提供了更多的活性位点。OH* 吸附在稳定的 Nb ₂ O ₅中的 Nb 位点上，H* 吸附在 Nb 位点上并以 H _{2的形式解吸}在稳定的 PtNb 中的 Pt 位点上。总体而言，这项工作不仅首先实现了稳定的高电流密度中性海水析氢性能，而且为探索 SMSI 和掺入 Pt 以防止高电流密度下催化应用的团聚、腐蚀和水离解失能提供了新的机会。 .