Controllable Synthesis of Ruthenium Phosphides (RuP and RuP2) for pH-Universal Hydrogen Evolution Reaction
Controllable Synthesis of Ruthenium Phosphides (RuP and RuP2) for pH-Universal Hydrogen Evolution Reaction
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DOI：
10.1021/acssuschemeng.8b00187
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发表时间：
2018-05-01
影响因子：
8.4
通讯作者：
Fan, Xiaobin
中科院分区：
文献类型：
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作者：
Chang, Qingbo;Ma, Jingwen;Fan, Xiaobin
金属磷化物是一种很有前途的析氢反应(HER)非铂电催化剂。在这里，我们报告了一种简单的策略，可控制地合成纯RUP和RuP2，并评估它们在所有pH范围内的性能。与其他过渡金属磷化物不同的是，随着磷含量的降低，RUP在全pH范围内的HER性能明显提高。通过系统的研究发现，富Ru的RUP-475具有比富P的RuP2-550更好的导电性和更多的催化活性中心。此外，RUP-475在电流密度为10 mA cm(-2)(在pH为0、7和14时分别为46、47、22 mV)时表现出良好的HER性能和较小的过电位。
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, 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).