Electroactive 1T-MoS₂ Fluoroelastomer Ink for Intrinsically Stretchable Solid-State In-Plane Supercapacitors

Abstract

Full advantage of stretchable electronic devices can be taken when utilizing an intrinsically stretchable power source. High-performance stretchable supercapacitors with a simple structure and solid-state operation are good power sources for stretchable electronics. This study suggests a new type of intrinsically stretchable, printable, electroactive ink consisting of 1T-MoS2 and a fluoroelastomer (FE). The active material (1T-MoS2/FE) is made by fluorinating the metallic-phase MoS2 (1T-MoS2) nanosheets with the FE under high-power ultrasonication. The MoS2 in the 1T-MoS2/FE has unconventional crystal structures in which the stable cubic (1T) and distorted 2H structures were mixed. The printed line of the 1T-MoS2/FE on the porous stretchable Au collector electrodes is intrinsically stretchable at more than ε = 50% and has good specific capacitance (28 mF cm–2 at 0.2 mA cm–2) and energy density (3.15 mWh cm–3). The in-plane all-solid-state stretchable supercapacitor is stretchable at ε = 40% and retains its relative capacity (C/C o) by 80%. This printable device platform potentially opens up the in-plane fabrication of stretchable micro-supercapacitor devices for wearable electronic applications.

Highly stable and uniformly dispersed 1T-MoS2 nanosheets co-induced by chemical pressure and 2D template method with high supercapacitor performance

“…47 1T-MWS shows a pretty performance of 163 F g −1 due to the larger interlayer spacing and high conductivity. 11,48 Interestingly, the specific capacitance of the composites has been improved under the assistance of Ti 3 C 2 T x MXene. There were 204, 215 and 284 F g −1 for 1T-MWS/Ti 3 C 2 T x MXene-11, 1T-MWS/Ti 3 C 2 T x MXene-55 and 1T-MWS/Ti 3 C 2 T x MXene-110, respectively.…”

“…47 1T-MWS shows a pretty performance of 163 F g À1 due to the larger interlayer spacing and high conductivity. 11,48 Interestingly, the specic capacitance of the composites has been improved under the assistance of Ti S1, † respectively.…”

Recent progress in 2D hybrid heterostructures from transition metal dichalcogenides and organic layers: properties and applications in energy and optoelectronics fields

“…, carbon nanotubes and GO). 126,189–199 The hybrid approach can offer distinct advantages for energy storage applications. Table 3 summarizes recent progress in energy applications using binary or ternary hybrids, highlighting the preparation methods, the electrode morphologies, and the device performances.…”

Printable inks and deformable electronic array devices

“…For instance, exfoliated MoS 2 nanosheets homogeneously dispersed in a fluoropolymer elastomer matrix were used as a stretchable solid-state supercapacitor. 147 Stretchable semiconducting inks are usually prepared by blending the semiconducting material in an elastomer with the assistance of an appropriate solvent. Semiconducting polymers (mostly polythiophenes (PT)) have been used as p-type materials.…”