1 research outputs found
Polymorphous Supercapacitors Constructed from Flexible Three-Dimensional Carbon Network/Polyaniline/MnO<sub>2</sub> Composite Textiles
Polymorphous
supercapacitors were constructed from flexible three-dimensional carbon
network/polyaniline (PANI)/MnO<sub>2</sub> composite textile electrodes.
The flexible textile electrodes were fabricated through a layer-by-layer
construction strategy: PANI, carbon nanotubes (CNTs), and MnO<sub>2</sub> were deposited on activated carbon fiber cloth (ACFC) in
turn through an electropolymerization process, ādipping and
dryingā method, and in situ chemical reaction, respectively.
In the fabricated ACFC/PANI/CNTs/MnO<sub>2</sub> textile electrodes,
the ACFC/CNT hybrid framework serves as a porous and electrically
conductive 3D network for the rapid transmission of electrons and
electrolyte ions, where ACFC, PANI, and MnO<sub>2</sub> are high-performance
supercapacitor electrode materials. In the electrolyte of H<sub>2</sub>SO<sub>4</sub> solution, the textile electrode-based symmetric supercapacitor
delivers superior areal capacitance, energy density, and power density
of 4615 mF cm<sup>ā2</sup> (for single electrode), 157 Ī¼W
h cm<sup>ā2</sup>, and 10372 Ī¼W cm<sup>ā2</sup>, respectively, whereas asymmetric supercapacitor assembled with
the prepared composite textile as the positive electrode and ACFC
as the negative electrode exhibits an improved energy density of 413
Ī¼W h cm<sup>ā2</sup> and a power density of 16120 Ī¼W
cm<sup>ā2</sup>. On the basis of the ACFC/PANI/CNTs/MnO<sub>2</sub> textile electrodes, symmetric and asymmetric solid-state
textile supercapacitors with a PVA/H<sub>2</sub>SO<sub>4</sub> gel
electrolyte were also produced. These solid-state textile supercapacitors
exhibit good electrochemical performance and high flexibility. Furthermore,
flexible solid-state fiber-like supercapacitors were prepared with
fiber bundle electrodes dismantled from the above composite textiles.
Overall, this work makes a meaningful exploration of the versatile
applications of textile electrodes to produce polymorphous supercapacitors