司迎迎,任亚东,赵永强,闫叶祥,谢广文,王桂雪,刘欣.电沉积Ni-Fe-P非晶合金析氢阴极材料及其去合金化处理[J].表面技术,2020,49(9):175-181.
SI Ying-ying,REN Ya-dong,ZHAO Yong-qiang,YAN Ye-xiang,XIE Guang-wen,WANG Gui-xue,LIU Xin.Electrodeposited Ni-Fe-P Amorphous Alloy as Cathode Material for Hydrogen Evolution and Its De-alloying Treatment[J].Surface Technology,2020,49(9):175-181 |
| 电沉积Ni-Fe-P非晶合金析氢阴极材料及其去合金化处理 |
| Electrodeposited Ni-Fe-P Amorphous Alloy as Cathode Material for Hydrogen Evolution and Its De-alloying Treatment |
| 投稿时间：2020-02-10 修订日期：2020-09-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.09.019 |
| 中文关键词: 电沉积 低温 去合金化 Ni-Fe-P镀层 析氢性能 碱性溶液 |
| 英文关键词:electrodeposition low temperature de-alloying nickel-iron-phosphorus coating hydrogen evolution performance alkaline solution |
| 基金项目:国家自然科学基金（51672145） |
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| Author | Institution |
| SI Ying-ying | Qingdao University of Science and Technology, Qingdao 266042, China |
| REN Ya-dong | Qingdao University of Science and Technology, Qingdao 266042, China |
| ZHAO Yong-qiang | Qingdao University of Science and Technology, Qingdao 266042, China |
| YAN Ye-xiang | Qingdao University of Science and Technology, Qingdao 266042, China |
| XIE Guang-wen | Qingdao University of Science and Technology, Qingdao 266042, China |
| WANG Gui-xue | Qingdao University of Science and Technology, Qingdao 266042, China |
| LIU Xin | Qingdao University of Science and Technology, Qingdao 266042, China |
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| 中文摘要: |
| 目的 提高Fe电极的催化析氢性能。方法 较低温度条件下，在Fe基体表面电沉积一层非晶态Ni-Fe-P镀层，探究沉积电流密度、去合金时间等参数对Ni-Fe-P/Fe电极在碱性电解质中的电催化析氢反应的影响。通过扫描电镜、能谱、X射线衍射对镀层的形貌、元素分布、物相进行分析。在碱性溶液中，利用电化学工作站对电极进行一系列性能测试。结果 在沉积温度为10 ℃的条件下，于Fe电极表面成功制备出了致密且元素分布均匀的Ni-Fe-P非晶合金镀层。获得的Ni-Fe-P/Fe电极电催化性能均优于Fe电极，其中电流密度30 mA/cm2条件下制备的Ni-Fe-P/Fe电极在析氢电流密度为10 mA/cm2时的过电位为174.2 mV，比Fe电极低约466.2 mV。在相同条件下制备的Ni-Fe-P/Fe电极，经240 s去合金化处理，电极过电位仅为121.6 mV，比Fe电极低约518.8 mV。结论 电沉积的Ni-Fe-P非晶合金镀层可以显著提高Fe电极的析氢性能。随着沉积电流密度的增加，Ni-Fe-P/Fe电极的析氢过电位减小，双电层电容和电化学工作表面积增大。对镀层进行适当的去合金化处理，形成的三维多孔结构可以减小电极的电荷转移电阻，有效降低电极的析氢过电位。 |
| 英文摘要: |
| The work aims to improve the catalytic hydrogen evolution of Fe electrode. The amorphous Ni-Fe-P coatings were electrodeposited on the surface of Fe substrate at a lower temperature. The effects of electrodeposition current density and de-alloying time on the Ni-Fe-P/Fe electrode in alkaline electrolyte were investigated. The morphology, element distribution and phase structure of the coatings were analyzed by scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. A series of performance tests were carried out on the electrode by electrochemical workstation in alkaline solution. The Ni-Fe-P amorphous alloy coating with dense and uniform element distribution was successfully prepared on the surface of Fe electrode at 10 ℃. The electrocatalytic performance of the obtained Ni-Fe-P/Fe electrodes was better than that of the Fe electrode. The overpotential of the Ni-Fe-P/Fe electrode prepared under the condition of J=30 mA/cm2 at a hydrogen evolution current density of 10 mA/cm2 was 174.2 mV, about 466.2 mV lower than that of the Fe electrode. For the Ni-Fe-P/Fe electrode prepared under the same conditions, after 240 s de-alloying treatment, the overpotential of the electrode was only 121.6 mV, about 518.8 mV lower than that of the Fe electrode. The electrodeposited Ni-Fe-P amorphous alloy coating can significantly improve the hydrogen evolution performance of the Fe electrode. With the increase of the deposition current density, the hydrogen evolution overpotential of the Ni-Fe-P/Fe electrode decreases, and the electric double layer capacitance and the electrochemical working surface area increase. After proper de-alloying of the electrode, the three-dimensional porous structure formed can reduce the charge transfer resistance of the electrode and the hydrogen evolution overpotential of the electrode. |
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