A Flexible and Binderless\nThienothiophene Single-Wall\nCarbon Nanotube-Based Hybrid Electrode: Design, Synthesis, and Supercapacitor\nApplications

A robust cycle life and high energy and power density\nare essential\nfor storing energy. In addition, flexible and self-supporting electrodes\nplay a crucial role in supercapacitor applications. Herein, we present\nthe use of a thienothiophene and single-walled carbon-nanotube-based\nhybrid material, <b>TT-HB-SWCNT</b>, as a highly efficient symmetrical\nsupercapacitor having flexible and self-standing properties. It serves\nas a flexible free-standing electrode in a two-electrode system for\nboth supercapacitor and energy storage purposes. The developed hybrid\nelectrode demonstrates an appropriate energy density for its application\nin supercapacitors, exhibiting a C-rate capability that aligns with\nthe operational range of symmetrical supercapacitors. Moreover, regarding\nthe GCD curves of the first and last five cycles, it is evident that\ncharge and discharge occur with high reversibility of 10,000 cycles.\nIt displayed a high energy storage capacity of 57.44 F·g<sup>–1</sup> at 4 A·g<sup>–1</sup> current density\nand a maximum power density of 2000 W·kg<sup>–1</sup>,\ndemonstrating that <b>TT-HB-SWCNT</b> is a promising hybrid\nnanomaterial for high-performance energy storage applications.