Co-rich ZnCo₂O₄ (ZCO) two-dimensional (2D) nanosheets are decorated with highly porous, glucose-derived, zero-dimensional (0D) interconnected network-like carbon nanospheres (CNS) using an in situ hydrothermal method. The content of CNS in the reaction is varied to produce two different composites (CNS@ZCO-I and CNS@ZCO-II). Their physicochemical properties are examined and compared with those of the pristine-CNS and ZCO samples. The non-stoichiometry of the elements in ZCO of the composites is quantified by X-ray diffraction using a Reitveld refinement and X-ray photoelectron spectroscopy. CNS@ZCO-II is found to be Co-rich in ZnCo₂O₄ compared to the other samples. The high surface area of the CNS and non-stoichiometry of Zn/Co in the composites provide a short ion/electron transport path distance, high electronic conductivity, additional electrochemical active sites, and stable structural integrity. This viable strategy offers a good interaction between the CNS and ZCO, which translates to better electrochemical activity as an electrode material for energy storage devices. The CNS@ZCO-II composite with a higher CNS concentration shows an excellent electrochemical performance of approximately 1116.24 F g⁻¹ at 0.35 A g⁻¹ (compared to the pristine-ZCO and CNS@ZCO-I composite).

使用原位水热法，用高度多孔的，葡萄糖衍生的，零维（0D）互连网络状碳纳米球（CNS）装饰富钴的ZnCo ₂ O ₄（ZCO）二维（2D）纳米片。反应中CNS的含量变化以产生两种不同的复合物（CNS @ ZCO-I和CNS @ ZCO-II）。检查了它们的理化性质，并与原始CNS和ZCO样品的理化性质进行了比较。复合材料的ZCO中元素的非化学计量是使用Reitveld精炼和X射线光电子能谱通过X射线衍射进行定量的。发现CNS @ ZCO-II富含Co的ZnCo ₂ O ₄与其他样本相比。CNS的高表面积和复合物中Zn / Co的非化学计量比提供了较短的离子/电子传输路径距离，高电子电导率，附加的电化学活性位点和稳定的结构完整性。这种可行的策略在CNS和ZCO之间提供了良好的相互作用，从而转化为更好的电化学活性，作为储能设备的电极材料。具有较高CNS浓度的CNS @ ZCO-II复合材料在0.35 A g ^-1下显示出大约1116.24 F g ^-1的优异电化学性能（与原始ZCO和CNS @ ZCO-I复合材料相比）。