Controllable Synthesis of Ruthenium Phosphides (RuP and RuP2) for pH-Universal Hydrogen Evolution Reaction,ACS Sustainable Chemistry & Engineering

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Controllable Synthesis of Ruthenium Phosphides (RuP and RuP2) for pH-Universal Hydrogen Evolution Reaction
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-04-17 00:00:00 , DOI: 10.1021/acssuschemeng.8b00187
Qingbo Chang ₁ , Jingwen Ma ₁ , Yuanzhi Zhu ₁ , Zhen Li ₁ , Danyun Xu ₁ , Xuezhi Duan ₂ , Wenchao Peng ₁ , Yang Li ₁ , Guoliang Zhang ₁ , Fengbao Zhang ₁ , Xiaobin Fan ₁

Affiliation

Metal phosphides are promising efficient non-Pt electrocatalysts for hydrogen evolution reaction (HER). Herein, we report a simple strategy to controllably synthesize pure RuP and RuP₂ and evaluate their HER performances in all pH range. Different from other transition metal phosphides, the HER performance of the RuP_x in all pH range obviously improves as the phosphorus content decreases. By systematic research, it has been found that the RuP-475 with more Ru had much better conductivity and more catalytically active sites than the P rich RuP₂-550. In addition, the RuP-475 exhibits excellent HER performance with small overpotential at a current density of 10 mA cm^–2 (46, 47, 22 mV in pH 0, 7, and 14, respectively).

中文翻译：

pH值普遍存在的析氢反应中可控合成的磷化钌（RuP和RuP ₂）

金属磷化物是有望用于氢析出反应（HER）的高效非Pt电催化剂。在本文中，我们报告了一种可控制地合成纯RuP和RuP ₂并评估其在所有pH范围内的HER性能的简单策略。与其他过渡金属磷化物不同，RuP _x在所有pH范围内的HER性能都随着磷含量的降低而明显提高。通过系统研究发现，与富P的RuP ₂ -550相比，具有更多Ru的RuP-475具有更好的电导率和更多的催化活性位。此外，RuP-475在电流密度为10 mA cm ^–2时（在pH 0、7和14分别为46、47、22 mV）分别具有出色的HER性能和小的过电位。

更新日期：2018-04-17

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