Oxygen evolution reaction (OER) is an important key factor in favor of spotless energy production and storage. High cost and toxic elements can threaten the energy production. Only way to tackle the problem is that by utilizing the cost effective, earth-abundant and non toxic elements. In the present study, CuS, β-SnS and CuS@β-SnS nanocomposite were synthesized via co-precipitation process. X-Ray diffraction (XRD) spectra identify crystalline phases of synthesized samples. Raman spectra confirm nanocomposite formation and determine vibrational modes of molecules. Photoluminescence (PL) spectra revealed optical and electronic properties of synthesized materials. Flower-like morphology of CuS@β-SnS nanocomposite was analyzed by scanning electron microscopy (SEM) images. In addition, CuS@β-SnS nanocomposite exhibits 1111 F/g specific capacitance and 224 mV low overpotential. Further study revealed that CuS@β-SnS nanocomposite electrocatalyst displays good stability and excellent OER activity even over a prolong time. Remarkably, CuS@β-SnS nanocomposite revealed a low price water oxidation electrocatalyst and it builds a new pathway for practical water splitting applications.

氧气析出反应（OER）是支持无尘能源生产和存储的重要关键因素。高成本和有毒元素会威胁到能源生产。解决该问题的唯一方法是利用具有成本效益的，富含地球的无毒元素。本研究通过共沉淀法合成了CuS，β-SnS和CuS @β-SnS纳米复合材料。X射线衍射（XRD）光谱可识别合成样品的晶相。拉曼光谱证实了纳米复合物的形成并确定了分子的振动模式。光致发光（PL）光谱揭示了合成材料的光学和电子性质。通过扫描电子显微镜（SEM）图像分析了CuS @β-SnS纳米复合材料的花状形态。此外，CuSβ-SnS纳米复合材料具有1111 F / g的比电容和224 mV的低过电势。进一步的研究表明，即使长时间，CuS @β-SnS纳米复合电催化剂也显示出良好的稳定性和优异的OER活性。值得注意的是，CuS @β-SnS纳米复合材料揭示了一种廉价的水氧化电催化剂，并为实际的水分解应用奠定了一条新途径。