| 血小板状Ru掺杂Ni2P纳米催化剂的合成及其双功能电催化析氢和析氧性能 |
| Synthesis and Electrocatalytic Bifunctionality for Hydrogen and Oxygen Evolution of Platelet-like Ru-Doped Ni2P Nanocatalyst |
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| 摘要: 采用简单的一锅法制备了血小板状Ru掺杂Ni2P纳米片催化剂。金属Ru的引入不但显著增强了催化剂的电子传输性能，而且导致血小板状纳米片表面产生了大量阶梯/位错缺陷；此外，电催化活性位点测试表明Ru和Ni2P均是电催化的有效活性组分。这些因素共同促进了电催化析氢（HER）和析氧反应（OER）过程。对于HER，该催化剂表现出明显优于单一Ni2P和Ru且接近商用20%（w/w）Pt/C催化剂的初始电位（35 mV）和Tafel斜率（34 mV·dec-1）以及长久的稳定性（3 000圈）。对于OER，该催化剂表现出优于Ni2P、Ru、20% Pt/C且接近商用IrO2催化剂的初始电位（1.54 V）和过电势η10（0.49 V）。 |
| 关键词: 氢气 氧气 掺杂 钌 磷化镍 电化学 |
| 基金项目: 国家自然科学基金（No.21533012）和江苏高校优势学科建设工程项目资助。 |
| Abstract: This work reports a platelet-like Ru-doped Ni2P nanosheet catalyst which was prepared by a simple one-pot method. The introduction of Ru not only significantly enhances the electron transport property of the catalyst, but also contributes to platelet-like morphology which causes a large number of step and dislocation defects on the catalyst surface; in addition, electrochemical tests reveal that both Ru and Ni2P are effective active components for electrocatalysis. These factors jointly enhance the electrocatalytic hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performances of the Ru-doped Ni2P catalyst. For HER, the Ru-doped Ni2P catalyst shows superior onset potential (35 mV), Tafel slope (34 mV·dec-1) and long-term cycling stability (3 000 cycles), superior than that of the individual Ni2P, Ru and close to the commercial 20%Pt/C catalyst. For OER, the Ru-doped Ni2P catalyst displays a small onset potential of 1.54 V and overpotential (η10) of 0.49 V, superior to the Ni2P, Ru, 20%Pt/C, and close to the commercial IrO2 catalyst. |
| Keywords: hydrogen oxygen doping Ru Ni2P electrochemistry |
| 投稿时间：2020-03-03 修订日期：2020-04-09 |
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| 刘影,陆徐云,车志文,王伟,包建春.血小板状Ru掺杂Ni2P纳米催化剂的合成及其双功能电催化析氢和析氧性能[J].无机化学学报,2020,36(6):1085-1092. |
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