Reduced graphene oxide and polypyrrole/reduced graphene oxide composite coated stretchable fabric electrodes for supercapacitor application

Abstract

. (2015). Reduced graphene oxide and polypyrrole/reduced graphene oxide composite coated stretchable fabric electrodes for supercapacitor application. Electrochimica Acta, Reduced graphene oxide and polypyrrole/reduced graphene oxide composite coated stretchable fabric electrodes for supercapacitor application AbstractThe advent of self-powered functional garments has given rise to a demand for stretchable energy storage devices that are amendable to integration into textile structures. The electromaterials (anode, cathode and separator) are expected to sustain a deformation of 3% to 55% associated with body movement. Here, we report a stretchable fabric supercapacitor electrode using commonly available nylon lycra fabric as the substrate and graphene oxide (GO) as a dyestuff. It was prepared via a facile dyeing approach followed by a mild chemical reduction. This reduced graphene oxide (rGO) coated fabric electrode retains conductivity at an applied strain of up to 200%. It delivers a specific capacitance of 12.3 F g −1 at a scan rate of 5 mV s −1 in 1.0 M lithium sulfate aqueous solution. The capacitance is significantly increased to 114 F g −1 with the addition of a chemically synthesized polypyrrole (PPy) coating. This PPy-rGO-fabric electrode demonstrates an improved cycling stability and a higher capacitance at 50% strain when compared to the performance observed with no strain.Keywords supercapacitor, electrodes, fabric, stretchable, graphene, coated, application, composite, reduced, polypyrrole, oxide Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsZhao, C., Shu, K., Wang, C., Gambhir, S. & Wallace, G. G. (2015 AbstractThe advent of self-powered functional garments has given rise to a demand for stretchable energy storage devices that are amendable to integration into textile structures. The electromaterials (anode, cathode and separator) are expected to sustain a deformation of 3% to 55% associated with body movement. Here, we report a stretchable fabric supercapacitor electrode using commonly available nylon lycra fabric as the substrate and graphene oxide (GO) as a dyestuff. It was prepared via a PPy-rGO-fabric electrode demonstrates an improved cycling stability and a higher capacitance at 50% strain when compared to the performance observed with no strain.

Flexible all-solid-state micro-supercapacitor based on Ni fiber electrode coated with MnO2 and reduced graphene oxide via electrochemical deposition

“…Competitive advantages of the graphenebased materials include large specific surface area, excellent electrical conductivity and high mechanical strength [20,32,33]. Via a dyeing approach, Zhao et al [34] . Through a spontaneous redox reaction, Zhang et al [36] obtained an FE of graphene-wrapped copper wires, giving a specific volumetric capacitance of 7.3 F cm −3 at a current density of 0.5 mA cm −2 .…”

Graphene-based fabrics and their applications: a review

“…This is why the use of G derivatives for supercapacitors is on the increase. The same happens in the field of fabrics, where the applications of G materials allows to obtain flexible supercapacitors [61,[69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85]. Fig.…”

“…However, the capacitance obtained by carbon materials is low and other pseudo-capacitative materials are usually added on top of them to increase their capacitance. These materials include conducting polymers suc as PPy [70,71,80,81,83], Pani [74,85], PEDOT [73] and metal oxides such as MnO2 [72,73,83], V2O5 [75]. The use of MWCNTs has also been reported to increase double layer capacitance and conductivity [75,81].…”

“…In addition, the high roughness produced by the plasma treatment also helped in the fixation process of GO sheets. Zhao et al [80] also applied plasma treatment in order to increase the wettability of nylon/lycra fabrics and facilitate GO adhesion.…”

Recent advances and challenges of stretchable supercapacitors based on carbon materials

“…11b). By utilizing the cost-effective technique, Zhao et al [158] reported SCs fabricated from rGO coated pre-existing nylon lycra fabric electrode via a facile dyeing approach. After the addition of a chemically synthesized PPy, the assembled SC achieves an energy density of 2.53 W h kg −1 , and delivers a specific capacitance from 12.3 F g −1 to 114 F g −1 at a scan rate of 5 mV s −1 with an improved cycling stability (89% capacitance retention after 2000 cycles at 50% strain) and a higher capacitance at 50% strain when compared to the performance observed with no strain.…”