We have elaborated nanocomposite electrodes, which were designed and synthesized via facile hydrothermal with further annealing processes of NiMoO₄ nanosheets on cobalt and magnesium double hydroxide (DH) growing directly on Ni foam. The integrated electrode (the optimum hydrothermal time 6 h) designed according to this structural pattern, had an excellent electrochemical performance along with a high areal-specific capacitance of 6.50 F cm⁻² at 5 mA cm⁻² and retained 56% at 60 mA cm⁻², the capacitance of the electrode material remained 74% after 5000 cycles at 40 mA cm⁻². The Co-Mg [email protected]₄ and activated carbon were assembled into an asymmetric supercapacitor (Co-Mg [email protected]₄//AC), which allowed the feasible voltage could reach 1.6 V and a high energy density of 57 W h kg⁻¹ at the power density of 0.4 kW kg⁻¹. The Co-Mg [email protected]₄//AC also showed significant cyclic stability with the capacitance retention of 87% after 5000 cycles.

我们精心设计了纳米复合电极，该电极是通过便捷的水热法设计和合成的，并在镍上直接生长在镍泡沫上的NiMoO ₄纳米片和双氢氧化镁（DH）进行了进一步的退火处理。根据该结构模式设计的集成电极（最佳水热时间为6小时）具有出色的电化学性能，在5 mA cm ^-2时具有6.50 F cm ^-2的高面积比电容，在60 mA时保持56％的容量cm ^-2时，电极材料的电容在40 mA cm ^{-2的条件下}经过5000次循环后仍保持74％。Co-Mg [电子邮件保护] ₄然后将活性炭和活性炭组装成不对称超级电容器（Co-Mg [受电子邮件保护] ₄ // AC），这使可行电压可以达到1.6 V，并且在功率密度为0.4时具有57 W h kg ^-1的高能量密度千瓦kg ^-1。Co-Mg [受电子邮件保护] ₄ // AC还显示出显着的循环稳定性，在5000次循环后电容保持率为87％。