The sluggish mechanism of oxygen evolution reaction (OER) inhibits the efficiencies of different energy storage systems. Thus, recent studies have mainly focused on designing highly active electrocatalysts to enhance OER. Here, a porous microsphere, copper molybdate (CuMoO₄), is synthesized via a simple hydrothermal route. Further, the crystalline nature of CuMoO₄ is confirmed via X-ray diffraction (XRD). The chemical states of the designed sample are determined via X-ray photoelectron spectroscopy (XPS). The morphology and elemental composition are determined via scanning electron microscopy (SEM) and transmission electron microscopy (TEM), as well as energy-dispersive X-ray (EDX) analyses. The CuMoO₄ microspheres exhibit interconnected nanoflake-like structures, which can improve the active surface area and efficiency of CuMoO₄. Furthermore, the active surface area of the CuMoO₄ microspheres is calculated via the Brunauer–Emmett–Teller (BET) method. The obtained catalytic performance of CuMoO₄ is compared with those of its basic metal oxides, such as MoO₃ and CuO. The obtained overpotentials (ղ) of CuO, MoO₃, IrO₂, and CuMoO₄ were 286, 294, 267, and 247 mV with Tafel slope values of 65, 84, 58, and 53 mV/dec, respectively. The study of the long-term stability of the CuMoO₄ electrode reveals that it can sustain the electrochemical activity for 12 h.

析氧反应（OER）缓慢的机制抑制了不同储能系统的效率。因此，最近的研究主要集中在设计高活性电催化剂以提高 OER。在这里，多孔微球钼酸铜 (CuMoO ₄ ) 是通过简单的水热途径合成的。此外，CuMoO ₄的结晶性质通过X射线衍射(XRD)得到证实。设计样品的化学状态是通过 X 射线光电子能谱 (XPS) 确定的。通过扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 以及能量色散 X 射线 (EDX) 分析确定形态和元素组成。CuMoO ₄微球表现出相互连接的纳米片状结构，这可以提高 CuMoO ₄的活性表面积和效率。此外，CuMoO ₄微球的活性表面积通过Brunauer-Emmett-Teller（BET）方法计算。CuMoO ₄获得的催化性能与其碱性金属氧化物如MoO ₃和CuO的催化性能进行了比较。获得的 CuO、MoO ₃、IrO ₂和 CuMoO _{4 的过}电位 (  ) 分别为286、294、267和 247 mV，塔菲尔斜率值分别为 65、84、58 和 53 mV/dec。CuMoO ₄的长期稳定性研究 电极表明它可以维持电化学活性 12 小时。