High-Performance Flexible All-Solid-State Supercapacitor from Large Free-Standing Graphene-PEDOT/PSS Films

Abstract

Although great attention has been paid to wearable electronic devices in recent years, flexible lightweight batteries or supercapacitors with high performance are still not readily available due to the limitations of the flexible electrode inventory. In this work, highly flexible, bendable and conductive rGO-PEDOT/PSS films were prepared using a simple bar-coating method. The assembled device using rGO-PEDOT/PSS electrode could be bent and rolled up without any decrease in electrochemical performance. A relatively high areal capacitance of 448 mF cm−2 was achieved at a scan rate of 10 mV s−1 using the composite electrode with a high mass loading (8.49 mg cm−2), indicating the potential to be used in practical applications. To demonstrate this applicability, a roll-up supercapacitor device was constructed, which illustrated the operation of a green LED light for 20 seconds when fully charged.

Mechanical behavior of strain sensors based on PEDOT:PSS and silver nanoparticles inks deposited on polymer substrate by inkjet printing

“…We obtained a mean value of 92 m for the PEDOT:PSS and 0.60 m for the nanoparticle silver. The lower resistivity of the PEDOT:PSS with respect to the pristine PEDOT:PSS is justified by the presence of the diethylene glycol (DEG) in the liquid ink [27,28]. Indeed, DEG induces to create a highly conducting PEDOT:PSS network.…”

Bendable solid-state supercapacitors with Au nanoparticle-embedded graphene hydrogel films

“…In recent years, bendable electrical double layer capacitors—or supercapacitors—have been regarded as one of the most promising energy storage devices, owing to their fast charge/discharge rates and favorable cycle lifetimes when compared with batteries1234. Unlike batteries, which store energy through electrochemical reactions in the electrode bulk, supercapacitors store energy primarily at the interface of the electrode and electrolyte.…”

Mechanically Robust Nanofibrous Xerogel Membrane for One‐Pass Removal of Trace Water in Oil

“…The inset picture in Figure shows the image of crosslinked PAA/PVA 2/8 NFM after swelling equilibrium. In addition, the physicochemical properties were influenced by macromolecular arrangement and crystal structure, that can be regulated by the calcination temperature and atmosphere . As shown in Figure S4, Supporting Information, the swelling ratio of PAA/PVA 2/8 NFMs treated at 160 °C for 30 min shows a reasonable high correlation ( r 2 = −0.06365) between various samples, revealing the repeatability of manufacturing.…”