Preparation of Co-BDC/Ti3C2Tx Composite Materials for High-performance Supercapacitor Electrodes

Feng Cui; Jiangzhi Zi; Xi Chen

doi:10.6919/ICJE.202605_12(5).0017

Authors

Feng Cui
Jiangzhi Zi
Xi Chen

DOI:

https://doi.org/10.6919/ICJE.202605_12(5).0017

Keywords:

Supercapacitor; Electrochemistry; Composite Materials; Energy Storage.

Abstract

Ti₃C₂Tₓ MXene holds great potential for supercapacitor electrodes, yet its performance is hindered by nanosheet restacking. Herein, a Co-BDC/Ti₃C₂T_x composite is fabricated by in situ growth of a cobalt-based MOF on MXene nanosheets. This unique architecture synergistically integrates the high conductivity of MXene with the large surface area and rich pseudocapacitance of MOF, leading to significantly enhanced electrochemical performance. The composite electrode exhibits a superior areal capacitance of 10.31 F cm^-2 at 2 mA cm^-2. A solid-state asymmetric supercapacitor constructed with this composite delivers an energy density of 0.741 mW cm^-2 at a power density of 0.483 mWh cm^-2 and retains 89% of its initial capacitance after 5000 cycles, highlighting its remarkable cycling stability. This work presents an effective strategy for designing high-performance MXene-based electrodes for next-generation flexible energy storage devices.

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