Bamboo-templated bimetallic MOF-derived thick carbon electrodes for supercapacitors
摘要
Metal–organic framework-derived porous carbons show promising potential as high-loading electrode materials for supercapacitors, while achieving efficient ion transport and conductivity remains a key challenge. In this work, a binder-free ZnCo bimetallic MOF-derived bamboo carbon (ZnCoBC) was fabricated through a one-step growth and carbonization strategy. The optimized ZnCoBC1000-5 exhibits a high specific surface area of 1385.49 m2 g− 1 and a mesoporous volume of 0.51 cm3 g− 1, confirming a well-developed hierarchical pore network. Electrochemical measurements demonstrate that ZnCoBC1000-5 maintains stable CV and GCD profiles within 5–30 mA cm− 2, reflecting efficient charge transport and reversibility. The assembled symmetric device delivers a volumetric energy density of 6.46 mWh cm− 3, while retaining 97.1% capacitance after 10,000 cycles, indicating excellent durability. This work highlights the structural advantages of bimetallic MOF-derived carbon bamboo and provides meaningful insight for designing high-performance energy-storage electrodes.