Flexible electrochromic supercapacitors (ECSCs) consisting of conjugated polymer electrodes are promising for integrating optical modulation with sustainable energy storage. However, there remain formidable challenges to achieving long-term cycling stability while maximizing high device output voltage. Here, we design a new twisted conjugated polymer bearing dual-redox centers (thiophene and triphenylamine) and an electron-withdrawing cyano group. The as-prepared conjugated polymer showcases elevated discharge potential and highly efficient charge transport synchronously, attributed to the lowered energy of the lowest unoccupied molecular (LUMO) orbitals and twisted alignment of the polymer chain. Coupled with the transparent vanadium pentoxide (V2O5) nanowires ion-storage material, the flexible ECSC affords a high optical contrast of 67 %, wide voltage window of 2 V, large capacitance of 32.9 mF/cm2, and outstanding cycling durability (86 % capacitance and 96 % optical modulation rete
HALIFAX, NS / ACCESSWIRE / May 31, 2022 / Meta Materials Inc. ("META®") (NASDAQ:MMAT)(FSE:MMAT), a developer of high-performance functional materials and nanocomposites, and PPG (NYSE:PPG) (together with
Abstract
Polydopamine (PDA), a quinone containing bioinspired material, is attractive for environmental and human-friendly energy storage systems because of its fast and reversible proton-involved redox activity. Herein, we describe a multifunctional porous double-network polymer based on tetraaniline and PDA. This material can take advantage of the redox activity and wettability from PDA, as well as the electronic conductivity and electrochromic capability provided by tetraaniline. It does not show cytotoxic effects as evidenced by conventional cell viability and imaging assays. An electrochromic battery-type device based on this material delivers a considerable capacity of 160 mAh g together with a high coloring efficiency of 270 cm /C and a large optical contrast of up to 37% at 700 nm. The device is capable of storing energy while indicating the energy status visually. This multifunctional porous conductive PDA material is promising for versatile energy storage applications. �