Binary transitional metal oxides have specific properties for use in energy applications. In this paper, an inexpensive 3D hierarchical ZnCo₂O₄ with flower-like morphology on nickel foam has been synthesized by a one-step hydrothermal method. X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy confirm the successful synthesis of ZnCo₂O₄. Also, the porosity is evaluated with Brunauer-Emmett-Teller (BET) and morphology studied by scanning electron microscope (SEM) and transmission electron microscopy (TEM). The results of the electrochemical tests indicate the good capability of this electrode to be used in asymmetric supercapacitors. It is tempting to using this electrode by the specific capacitance of about 572 F/g at the scan rate of 10 mV/s and very good stability (94% after 5000 cycles). Also, the discharge time of this electrode at a current density of 0.5 A/g was about 380 s, which is a relatively acceptable time. This electrode with special architectures recommends for using high-performance asymmetric supercapacitors.

二元过渡金属氧化物具有用于能源应用的特定性能。本文通过一步水热法合成了一种廉价的3D分层ZnCo ₂ O ₄，其在镍泡沫上具有花状形态。X射线衍射光谱（XRD），X射线光电子能谱（XPS）和拉曼光谱证实了ZnCo ₂ O ₄的成功合成。另外，用Brunauer-Emmett-Teller（BET）评估孔隙率，并通过扫描电子显微镜（SEM）和透射电子显微镜（TEM）研究形态。电化学测试的结果表明该电极在非对称超级电容器中具有良好的性能。试图以10 mV / s的扫描速率和非常好的稳定性（5000次循环后94％）以约572 F / g的比电容使用此电极。另外，该电极在0.5A / g的电流密度下的放电时间为约380s，这是相对可接受的时间。这种具有特殊结构的电极建议使用高性能的不对称超级电容器。