The development of highly efficient and stable electrocatalysts for the hydrogen evolution reaction (HER) under alkaline media is of great importance due to its sluggish water dissociation kinetics. In this work, ultrafine Rh nanoparticle decorated MoSe₂ nanoflowers have been synthesized through a colloidal synthetic method. When further used as electrocatalysts for HER in alkaline media, the experimental results demonstrate that 8.2% Rh–MoSe₂ nanoflowers exhibit excellent catalytic activity with a small overpotential of 73 mV to obtain the current density of 10 mA cm⁻² with good stability, which is much higher than that of MoSe₂ (264 mV) and even close to 20% commercial Pt/C (48 mV). The improved HER performance of Rh–MoSe₂ nanoflowers may be ascribed to the synergistic catalytic effects between Rh and MoSe₂ and strong electronic interactions among Rh, Mo and Se at the atomic level.

中文翻译：

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超细Rh纳米颗粒修饰的MoSe ₂纳米花，可有效地进行碱氢释放反应†

由于其缓慢的水离解动力学，在碱性介质下开发高效，稳定的用于氢析出反应（HER）的电催化剂具有重要意义。在这项工作中，通过胶体合成方法合成了超细的Rh纳米粒子修饰的MoSe ₂纳米花。当进一步用作碱性介质中HER的电催化剂时，实验结果表明8.2％Rh–MoSe ₂纳米花具有出色的催化活性和73 mV的小超电势，从而获得了10 mA cm ^-2的电流密度和良好的稳定性。远高于MoSe ₂（264 mV），甚至接近20％的商用Pt / C（48 mV）。Rh–MoSe的HER性能得到改善_2个纳米花可能归因于Rh和MoSe ₂之间的协同催化作用以及Rh，Mo和Se在原子水平上的强电子相互作用。