<p>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 m<sup>2</sup> g<sup>− 1</sup> and a mesoporous volume of 0.51 cm<sup>3</sup> g<sup>− 1</sup>, confirming a well-developed hierarchical pore network. Electrochemical measurements demonstrate that ZnCoBC1000-5 maintains stable CV and GCD profiles within 5–30&#xa0;mA cm<sup>− 2</sup>, reflecting efficient charge transport and reversibility. The assembled symmetric device delivers a volumetric energy density of 6.46 mWh cm<sup>− 3</sup>, 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.</p>

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Bamboo-templated bimetallic MOF-derived thick carbon electrodes for supercapacitors

  • Shiyi Zeng,
  • Gaigai Duan,
  • Haotian Jin,
  • Shuijian He,
  • Chunmei Zhang,
  • Xiaoshuai Han,
  • Yong Huang,
  • Jingquan Han,
  • Shaohua Jiang

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.