摘要
懒惰的氧进化反应(OER ) 是电气化学的切开水的反应的重要一半反应。非结晶的 Fe/Ni 合成氧化物举办高活动。在这个工作，我们修改了喷雾器帮助水花的途径和获得的非结晶的 Fe-Ni-O <sub> x </sub> 稳固答案的 nanoparticles (Fe-Ni-O <sub> x </sub>-NPs) 在由作为原料选铁 / 镍为 acetylacetonates 而不是无机的盐的尺寸的约 20 nm。小型的 Fe-Ni-O <sub> x </sub>-NPs 被扫描电子描绘显微镜学(SEM ) ，传播电子显微镜学(TEM ) ， X 光检查衍射(XRD ) 分析，精力散的 X 光检查光谱学(EDX ) ，和 X 光检查光电子光谱学(XPS ) 。而且，电气化学的 OER 性能的调查建议小型的 Fe-Ni-O <sub> x </sub>-NPs 比大尺寸的 Fe-Ni-O <sub> x </sub>-MPs 举办更高的活动。0.315 V 的小过电位被要求获得 50 妈 / 厘米 <sup>2</sup>, 的工作当前的密度， Tafel 斜坡象 38 mV/dec 一样低。
The sluggish oxygen evolution reaction （OER） is an important half-reaction of the electrochemical water-splitting reaction. Amorphous Fe/Ni composite oxides have high activity. In this work, we modified the aerosol spray-assisted approach and obtained amorphous Fe-Ni-Ox solid-solution nanoparticles （Fe-Ni-Ox-NPs） approximately 20 nm in size by choosing iron/nickel acetylacetonates as raw materials instead of inorganic salts. The small-sized Fe-Ni-Ox-NPs were characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray diffraction （XRD） analysis, energy-dispersive X-ray spectroscopy （EDX）, and X-ray photoelectron spectroscopy （XPS）. Furthermore, an investigation of electrochemical OER performance suggests that the small-sized Fe-Ni-Ox-NPs have higher activity than the large-sized Fe-Ni-Ox-MPs. A small overpotential of 0.315 V was demanded to obtain a working current density of 50 mA/cm2, and the Tafel slope was as low as 38 mWdec.
