Mxene (Ti3C2Tx)/cellulose nanofiber/porous carbon film as free-standing electrode for ultrathin and flexible supercapacitors
By Chen, Weimin; Zhang, Daotong; Yang, Kai; Luo, Min; Yang, Pei; Zhou, Xiaoyan
Published in Chemical Engineering Journal
Chemical Engineering Journal
2020
Abstract
Traditional porous carbon (PC)-based supercapacitors (SCs) are generally stiff and heavy owing to their rigid components and bulky additives, such as binders, conducting materials, and current collectors. Herein, a porous (574.5 m2 g?1), conductive (83.1 S cm?1), and flexible MXene (Ti3C2Tx)/cellulose nanofiber (CNF)/PC hybrid film is prepared by strong interfacial interactions among its components via a facile vacuum-filtration method. Three-dimensional PC provides abundant micropores for charge storage and considerable amount of meso/macropores for fast diffusion of ions. Two-dimensional Ti3C2Tx offers a significantly high conductivity of 2.6