A thin-layer of Ni(OH)₂ was in situ formed on the surface of Ni₂P nanopillars (Ni(OH)₂@Ni₂P/E-NF) via a facile hydrothermal treatment in H₂O. Ni(OH)₂@Ni₂P/E-NF exhibits superior activity for the hydrogen evolution reaction with an overpotential of only 43 mV to achieve 10 mA cm⁻² and a good durability during the long-term operation in an alkaline medium. The excellent performance of Ni(OH)₂@Ni₂P/E-NF is likely ascribed to the strong interfacial coupling of Ni(OH)₂ and Ni₂P, which promotes the dissociation of water and concomitantly converts hydrogen intermediates (H_ad) to H₂.

中文翻译：

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在磷化镍纳米柱上形成氢氧化镍薄层以释放氢

的Ni（OH）的薄层₂是原位形成的Ni的表面上_2个P纳米柱（镍（OH）₂ @Ni ₂ P / E-NF）经由一个浅显的水热处理H中₂ O.的Ni（OH ）₂ Ni ₂ P / E-NF对氢析出反应显示出优异的活性，在碱性介质中的长期操作过程中，仅达到43 mV的超电势即可达到10 mA cm ^-2，并且具有良好的耐久性。Ni（OH）₂ @Ni ₂ P / E-NF的优异性能可能归因于Ni（OH）₂和Ni ₂的强界面耦合P促进水的离解，并同时将氢中间体（H _ad）转化为H ₂。