卢学毅, 王紫凌, 蔡默航, 卢侠. 高性能电催化析氧催化剂氧化钌的设计[J]. 华南师范大学学报(自然科学版), 2022, 54(3): 1-7. doi: 10.6054/j.jscnun.2022036
引用本文: 卢学毅, 王紫凌, 蔡默航, 卢侠. 高性能电催化析氧催化剂氧化钌的设计[J]. 华南师范大学学报(自然科学版), 2022, 54(3): 1-7. doi: 10.6054/j.jscnun.2022036
LU Xueyi, WANG Ziling, CAI Mohang, LU Xia. The Design of High-performance Ruthenium Oxide Catalyst for Electrocatalytic Oxygen Evolution Reaction[J]. Journal of South China Normal University (Natural Science Edition), 2022, 54(3): 1-7. doi: 10.6054/j.jscnun.2022036
Citation: LU Xueyi, WANG Ziling, CAI Mohang, LU Xia. The Design of High-performance Ruthenium Oxide Catalyst for Electrocatalytic Oxygen Evolution Reaction[J]. Journal of South China Normal University (Natural Science Edition), 2022, 54(3): 1-7. doi: 10.6054/j.jscnun.2022036

高性能电催化析氧催化剂氧化钌的设计

The Design of High-performance Ruthenium Oxide Catalyst for Electrocatalytic Oxygen Evolution Reaction

  • 摘要: 采用高温固相法结合离子交换法制备了一种HRu4O8微米棒;利用X射线衍射仪、透射电子显微镜、扫描电子显微镜、X射线光电子能谱等对材料进行形貌和物相表征;采用线性扫描伏安、循环伏安、塔菲尔、计时电位等电化学方法研究了HRu4O8微米棒电解水氧析出反应的催化活性。结果表明:以RuO2纳米颗粒为前驱体制备HRu4O8,其电化学活性比表面积显著增大,展现出优异的氧析出催化反应活性,在10 mA/cm2电流密度下的过电位(仅为208 mV)低于RuO2纳米颗粒(276 mV)。另外,HRu4O8微米棒具有出色的稳定性,该研究为设计高活性的电解水催化剂提供了新思路。

     

    Abstract: One kind of HRu4O8 microrods were fabricated with solid-state calcination and the proton exchange method. The morphology and crystal structure of HRu4O8 microrods were characterized with X-ray diffraction, transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy and so on. The catalytic activity of HRu4O8 was evaluated with the linear scanning voltammetry, cyclic voltammetry, Tafel plot, chronopotentiometry and other electrochemical methods. The results showed that the preparation of HRu4O8 with the RuO2 nanoparticle precursor resulted in a significant increase of the electrochemical active surface area. HRu4O8 exhibited excellent electrocatalytic activity towards OER with an overpotential of only 208 mV at 10 mA/cm2, lower than that of RuO2 nanoparticles(276 mV). Moreover, HRu4O8 also presented outstanding stability for 10 h without apparent degradation. Such work sheds light on new perspectives for designing highly active electrocatalyst of water splitting.

     

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