Highly efficient electrocatalysts for the hydrogen evolution reaction (HER) are essential for sustainable hydrogen energy. The controllable production of hydrogen energy by water decomposition depends heavily on the catalyst, and it is extremely important to seek sustainable and highly efficient water-splitting electrocatalysts for energy applications. Herein, bimetallic RuYO_2−x nanoparticles (Ru: 8.84 at.% and Y: 13 at.%) with high densities and low loadings were synthesized and anchored on graphene through a simple solvothermal strategy by synthesizing hydrogen yttrium ketone (H_xYO_2−x) serving as an inserted medium. Electron microscopy demonstrated that the RuYO_2−x/C was composed of densely arranged particles and graphene flakes. Electrochemical results showed that the RuYO_2−x/C had a remarkably low overpotential of η₁₀ = 56 mV at a current density of 10 mA cm⁻² in alkaline media, a Tafel slope of 63.18 mV dec⁻¹, and 24 h of stability. The oxygen vacancies of RuYO_2−x/C provided a large proton storage capacity and a strong tendency to bind hydrogen atoms. DFT calculations showed that RuYO_2−x/C catalysts with more Ru-O-Y bonds and V_O dramatically decreased the energy barrier for breaking H-OH bonds. Moreover, the robust metal-support interactions provided optimized energies for hydrogen adsorption and desorption, which explained the high activity and favorable kinetics for RuYO_2−x/C catalytic hydrogen precipitation in alkaline electrolyte reactions. This work presents a hydrogen insertion method for the preparation of low-loading, high-density, high-performance and stable water decomposition catalysts for hydrogen production.

用于析氢反应（HER）的高效电催化剂对于可持续氢能至关重要。水分解可控生产氢能在很大程度上取决于催化剂，寻求可持续、高效的水分解电催化剂对于能源应用极为重要。在此，通过简单的溶剂_热策略，通过合成氢钇酮_{（H x} YO _{2 - x} ) 作为插入介质。电子显微镜表明RuYO _{2 - x} /C由致密排列的颗粒和石墨烯薄片组成。电化学结果表明，RuYO _{2 − x} /C 在碱性介质中 电流密度为 10 mA cm ^-2时具有非常低的过电势 η ₁₀ = 56 mV ，塔菲尔斜率为 63.18 mV dec ^-1，24 h稳定。_{RuYO 2 - x} /C的氧空位提供了大的质子存储容量和强烈的结合氢原子的倾向。DFT计算表明，具有更多Ru-OY键和V2O的RuYO 2 − x/C催化剂_{显着降低了}破坏H-OH键的能垒。_{此外，强大的金属-载体相互作用为氢吸附和解吸提供了优化的能量，这解释了RuYO 2 - x} /C在碱性电解质反应中催化氢沉淀的高活性和有利的动力学。本工作提出了一种氢插入方法，用于制备低负载、高密度、高性能和稳定的水分解制氢催化剂。