Screen-printed stretchable supercapacitors based on tin sulfide-decorated face-mask-derived activated carbon electrodes with high areal energy density

Tools

Reddygunta, Kiran Kumar Reddy and Šiller, Lidija and Ivaturi, Aruna (2024) Screen-printed stretchable supercapacitors based on tin sulfide-decorated face-mask-derived activated carbon electrodes with high areal energy density. ACS Applied Energy Materials, 7 (9). pp. 3558-3576. ISSN 2574-0962 (https://doi.org/10.1021/acsaem.3c02902)

[thumbnail of Reddygunta-etal-ACS-AEM-2024-Screen-printed-stretchable-supercapacitors-based-on-tin-sulfide-decorated-face-mask-derived-activated-carbon-electrodes]
Preview
 Text. Filename: Reddygunta-etal-ACS-AEM-2024-Screen-printed-stretchable-supercapacitors-based-on-tin-sulfide-decorated-face-mask-derived-activated-carbon-electrodes.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo
Download (14MB)| Preview

Abstract

In this work, tin sulfide nanosheets decorated on face-mask-derived activated carbon have been explored as electrode material for electrochemical supercapacitors. A hydrothermal route was employed to grow tin sulfide on the surface and inside of high-surface-area face-mask-derived activated carbon, activated at 850 °C, to produce a hierarchical interconnected porous composite (ACFM-850/TS) structure. The presence of tin sulfide in the porous carbon framework exposed the surface active sites for rapid adsorption/desorption of electrolyte ions and ensured high utilization of the porous carbon surface. Furthermore, the porous ACFM-850 framework prevented the stacking/agglomeration of tin sulfide sheets, thereby enhancing the charge-transport kinetics in the composite electrodes. Benefiting from the synergistic effect of tin sulfide and ACFM-850, the resulting ACFM-850/TS composite exhibited an attractive specific capacitance of 423 F g–1 at a 0.5 A g–1 current density and superior rate capability (71.3% at a 30 A g–1 current density) in a 1.0 M Na2SO4 electrolyte. In addition, we fabricated a planar symmetric interdigitated supercapacitor on a stretchable Spandex fabric using an ACFM-850/TS composite electrode and carboxymethyl cellulose/NaClO4 as a solid-state gel electrolyte employing a scalable screen-printing process. The as-prepared stretchable supercapacitors displayed an ultrahigh energy density of 9.2 μWh cm–2 at a power density of 0.13 mW cm–2. In addition, they exhibited an excellent cyclic stability of 64% even after 10,000 charge–discharge cycles and 42% after 1000 continuous stretch (at 25% stretching)/release cycles. Such screen-printed interdigitated planar supercapacitors with activated carbon composite electrodes and a solid-state gel electrolyte act as promising low-cost energy-storage devices for wearable and flexible integrated electronic devices.

CORE (COnnecting REpositories)