A flexible semitransparent photovoltaic supercapacitor based on water-processed MXene electrodes

Abstract

Solar energy, although it has the highest power density available in terms of renewable energy, has the drawback of being erratic. Integrating an energy harvesting and storage device into photovoltaic energy storage modules is a viable route for obtaining self-powered energy systems. Herein, an MXene-based all-solution processed semitransparent flexible photovoltaic supercapacitor (PSC) was fabricated by integrating a flexible organic photovoltaic (OPV) with Ti 3 C 2 T x MXene as the electrode and transparent MXene supercapacitors with an organic ionogel as the electrolyte in the vertical direction, using Ti 3 C 2 T x thin film as a common electrode. In the quest for a semitransparent flexible PSC, Ti 3 C 2 T x MXene was first used as a transparent electrode for OPV with a high power conversion efficiency of 13.6%. The ionogel electrolyte-based transparent MXene supercapacitor shows a high volumetric capacitance of 502 F cm À3 and excellent stability. Finally, a flexible PSC with a high average transmittance of over 33.5% was successfully constructed by allsolution processing and a remarkable storage efficiency of 88% was achieved. This strategy enables a simple route for fabricating MXene based high-performance all-solution-processed flexible PSCs, which is important for realizing flexible and printable electronics for future technologies.

Doping and Design of Flexible Transparent Electrodes for High‐Performance Flexible Organic Solar Cells: Recent Advances and Perspectives

“…Thus, the MXene conducting materials begin to show a great promise in broad applications including electromagnetic interference shielding, sensing, energy storage, photovoltaics, light‐emitting diodes and catalysis. [ 128–139 ]…”

“…Qin et al. [ 131 ] reported a solution‐processed transparent electrode of Ti 3 C 2 T x with an electrical conductivity of 3352 S cm −1 ( Figure ), which was higher than that (≈500 S cm −1 ) of the conventional PEDOT:PSS electrodes doped with secondary solvent polar solvents. [ 140 ] The pristine WF of the Ti 3 C 2 T x electrode is 4.36 eV.…”

Preparation and application of one-dimensional nanomaterials derived from titanium carbide

“…; (b) 不同电流密度下的充放电曲 线; (c) 倍率性能; (d) 循环稳定性和库仑效率 [29] (网络版彩图) 料 [73,74] 、金属-有机骨架材料 [75,76] 和共价-有机骨架材 料 [77,78] [79,80] , 并探究其构效关系.…”

Organic electronic devices for solar energy conversion and storage

“…Ti 3 C 2 T x is the first developed MXene material and has been widely studied as an electrode material for electronic devices due to its high conductivity, easy solution processability, and good flexibility. [172][173][174] The fabrication process of Ti 3 C 2 T x MXene solution is shown in In my fifth study, Ti3C2Tx MXene solution is fabricated according to the literature. 174 Free standing Ti 3 C 2 T x MXene films are fabricated through filtration from the water suspension.…”

“…[172][173][174] The fabrication process of Ti 3 C 2 T x MXene solution is shown in In my fifth study, Ti3C2Tx MXene solution is fabricated according to the literature. 174 Free standing Ti 3 C 2 T x MXene films are fabricated through filtration from the water suspension. The CV curves of the Ti 3 C 2 T x MXene electrode are shown in Figure 5.8.…”