Achieving high-performance parameters in NASICON-polymer composite electrolyte-based solid-state supercapacitors by interface modification

Abstract

is achieved at 3 V/5 mA. Moreover, after 10 000 galvanostatic charge-discharge cycles (1 V/1 mA), the supercapacitor exhibits ∼99% stable coulombic efficiency along with appreciably high capacitance retention (∼90%). A stack of five such cells can power an 8 V LED circuit for more than 30 minutes. Applying such a solvent layer enables effective use of the surface area of the activated carbon. Results suggest that solvent incorporation enables a local 'gel-like' layer formation that couples the electrode with a solid polymer electrolyte and facilitates faster charge movement across the electrode-electrolyte interface.

Topics & Concepts