Relying on seed method, a double template ZIF-8@ZIF-67 with a layered core-shell structure was made, which is used as a sacrificial template in the next steps. After going through loading process with solvent thermal method and calcination process, ZIF-8@ZIF-67 was etched and calcined into ternary ZnO/Co₃O₄/NiO successfully. Besides, benefiting from right amount of the addition of inorganic salts, the optimized ZnO/Co₃O₄/NiO-2 (ZCN-2) shows the outstanding performance in its morphologic structure and electrochemical performance. In the case of a current density of 1 A g⁻¹, the high specific capacitance of 1119.11 C g⁻¹ can be calculated in ZCN-2. In addition, at 10 A g⁻¹, the capacitance value can maintain 93.75% after experiencing 5000 cycles of charging and discharging. The maximum energy density of the assembled ZCN-2//activated carbon (AC) asymmetric supercapacitor can reach 95.82 Wh kg⁻¹, which is really outstanding in the present research achievements. After experiencing charge-discharge cycles with the number of 10,000 times in the case of a current density of 10 A g⁻¹, the cycling stability of this supercapacitor can reach 94.53% of the initial value. And after a charge, the device connected by two supercapacitors can make a light emitting diode (LED) shine up to 30 min successfully.

依靠种子法，制备了具有分层核-壳结构的双模板ZIF-8 @ ZIF-67，其在后续步骤中用作牺牲模板。经过溶剂热法和煅烧法的加载过程后，对ZIF-8 @ ZIF-67进行了刻蚀并成功煅烧成三元ZnO / Co ₃ O ₄ / NiO。此外，得益于适量添加无机盐，优化后的ZnO / Co ₃ O ₄ / NiO-2（ZCN-2）在其形态结构和电化学性能方面均表现出出色的性能。在电流密度为1 A g ^-1的情况下，可以在ZCN-2中计算出1119.11 C g ^-1的高比电容。此外，在10 A g^-1，经过5000次充放电循环后，电容值可保持93.75％。组装后的ZCN-2 //活性炭（AC）不对称超级电容器的最大能量密度可以达到95.82 Wh kg ^-1，在目前的研究成果中确实是杰出的。在电流密度为10 A g ^-1的情况下经历10,000次充放电循环后，该超级电容器的循环稳定性可以达到初始值的94.53％。充电后，由两个超级电容器连接的设备可使发光二极管（LED）成功亮起30分钟。