Although cobalt/zinc-based bimetallic oxides are regarded as auspicious pseudocapacitive electrode materials owing to their high specific-capacitance and rich electrochemistry; however, relatively large capacitance fading during charge/discharge process and low energy-density hinder their real applications. In this work, we rationally designed a bimetallic oxide (ZnCo₂O₄) nanobelt-decorated activated carbon-cloth composite (ZCO@CC) electrode by economical hydrothermal method for hybrid supercapacitors. The binder-free ZCO@CC electrode displays excellent electrochemical properties by attaining the high specific-capacitance of 1197.14 F g⁻¹ (838 C g⁻¹) at 2 A g⁻¹ with good rate-capability of 75.18 % at 10 A g⁻¹. The hybrid nature of the stored charge is analyzed by manipulating power's law, which reveals that the diffusion-controlled and pseudocapacitive charge storage are contributed equally at a scan rate of 25 mV s⁻¹. The ex-situ X-ray powder diffraction and X-ray photoelectron spectroscopy confirmed the pseudocapacitive charge storage rather than capacitive. Moreover, the assembled hybrid supercapacitor (ZCO@CC||AC@CC) provides excellent specific energy of 79.48 Wh kg⁻¹ at a specific power of 894.24 W kg⁻¹. Further, the ZCO@CC||AC@CC shows superior flexible performance while bending at various angles and demonstrate a negligible change in capacitance by repeating 1000 GCD cycles at each bent state. Therefore, the achieved fascinating pseudocapacitive charge storage properties ensure that the ZCO@CC electrode is a potential material for high-performance hybrid supercapacitors.

尽管钴/锌基双金属氧化物由于其高的比电容和丰富的电化学性能而被视为吉祥的伪电容电极材料；然而，在充电/放电过程中相对较大的电容衰减和低能量密度阻碍了它们的实际应用。在这项工作中，我们通过经济的水热方法合理设计了一种双金属氧化物（ZnCo ₂ O ₄）纳米带修饰的活性炭布复合（ZCO @ CC）电极，用于混合超级电容器。无粘结剂ZCO @ CC电极通过在2 A g ^-1下获得1197.14 F g ^-1（838 C g ^-1）的高比电容，在10 A g下具有75.18％的高倍率性能，显示出优异的电化学性能。^-1。通过操纵幂定律分析了存储电荷的混合性质，这揭示了扩散控制和伪电容电荷存储在25 mV s ^-1的扫描速率下的贡献相等。所述前-situ X射线粉末衍射和X射线光电子光谱法确认的伪电容电荷存储，而不是电容性的。此外，组装的混合超级电容器（ZCO @ CC || AC @ CC）在894.24 W kg ^-1的比功率下可提供79.48 Wh kg ^-1的出色比能。。此外，ZCO @ CC || AC @ CC在各种角度弯曲的同时表现出优异的柔韧性，并且通过在每个弯曲状态下重复1000 GCD循环而显示出可忽略不计的电容变化。因此，获得的引人入胜的伪电容电荷存储特性确保ZCO @ CC电极是高性能混合超级电容器的潜在材料。