One-pot synthesis of Zr-MOFs on MWCNTs for high-performance electrochemical supercapacitor

A new electrode material consisting of MOFs (Zr-TAA, TAA: trans-aconitic acid) and MWCNTs was simply synthesized by one-pot reflux method and applied to high-performance supercapacitor. With advantages of improved conductivity and uniform pore-size distribution, the composite material shows enhanced electrochemical performance with a specific capacitance of 562.06 F g-1 and retains almost 100% of its initial capacitance after 1000 cycles when measured in 6 M KOH electrolyte. Furthermore, an asymmetric supercapacitor assembled by Zr-TAA/MWCNTs-6 as positive electrode and carbon cloth as negative electrode exhibits a superior energy density of 17.53 Wh kg-1 at a power density of 902.5 W kg-1, which demonstrates its great practical value in electrochemical energy storage applications.

Automated summary

A new electrode material composed of MOFs (Zr-TAA) and MWCNTs was synthesized and applied for high-performance supercapacitors, demonstrating enhanced electrochemical performance with improved conductivity and uniform pore-size distribution. The composite material showed a specific capacitance of 562.06 F g-1 and retained almost 100% of its initial capacitance after 1000 cycles, while an asymmetric supercapacitor assembled with this material exhibited a superior energy density of 17.53 Wh kg-1 at a power density of 902.5 W kg-1, indicating great practical value in electrochemical energy storage applications.