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Highly-dispersed ruthenium precursors via a self-assembly-assisted synthesis of uniform ruthenium nanoparticles for superior hydrogen evolution reaction

机译:通过自组装辅助合成均匀钌纳米粒子的高度分散的钌前体,用于优异的氢进化反应

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For the first time, highly-dispersed ruthenium precursors via a hydrogen-bond-driven melamine–cyanuric acid supramolecular complex (denoted CAM) self-assembly-assisted synthesis of uniform ruthenium nanoparticles with superior HER performance under both acidic and alkaline conditions are reported. Electrochemical tests reveal that when the current density is ?10 mA cm ~(?2) , the optimal Ru/CNO electrocatalyst could express low overpotentials of ?18 mV and ?46 mV, low Tafel slopes of 46 mV dec ~(?1) and 100 mV dec ~(?1) , in 0.5 M H _(2) SO _(4) and 1.0 M KOH, respectively. The remarkable HER performance could be attributed to uniform ruthenium with the aid of highly dispersed ruthenium precursors (Ru–CAM) and subsequent annealing results in uniform ruthenium nanoparticles.
机译:首次通过氢键驱动的三聚氰胺 - 氰尿酸超分子复合物(表示凸轮)自组装辅助合成均匀钌纳米粒子的高度分散的钌前体,其在酸性和碱性条件下具有优异的性能优异的钌纳米颗粒。电化学测试表明,当电流密度为10 mA cm〜(?2)时,最佳Ru / CNO电催化剂可以表达18 mV和α46mV的低过电位,低Tafel斜率为46 mV Dec〜(?1)和100 mV DEC〜(?1),分别为0.5MH _(2)所以_(4)和1.0 m KOH。借助于高度分散的钌前体(Ru-CAM)和随后的钌纳米颗粒,借助于高度分散的钌前体(Ru-CAM),可以归因于均匀的钌。

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