Ultra-thin all-solid-state micro-supercapacitors with exceptional performance and device flexibility. (March 2017)

• Record Type: Journal Article
• Authors: Göhlert, Theresia; Siles, Pablo F.; Päßler, Tom; Sommer, Robert; Baunack, Stefan; Oswald, Steffen; Schmidt, Oliver G.
• Is Part Of: Nano energy. Volume 33(2017:Mar.)
• Page Start: 387
• Page End: 392
• Publication Date: 2017-03
• Subjects: Supercapacitor -- Flexible electronics -- All-solid-state -- Cobalt oxide -- LiPON; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2017.01.054
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Relying on the combination of lithium phosphorous oxynitride (LiPON) as electrolyte and cobalt oxide (Co3 O4 ) as electrode material it is possible to fabricate symmetric all-solid-state micro-supercapacitors (ASTSCaps) on rigid and flexible substrates. Due to the nanoscale active layer dimensions, the excellent performance of the component materials and the high nominal voltage of 2 V, an exceptionally high volumetric energy and power densities of up to 8 (±2) mW h/cm 3 and 16 (±2) W/cm 3, respectively, are obtained. These results are going far beyond the current state-of-the-art performance limits. The ASTSCaps are temperature stable up to 215 °C (for 1 V nominal voltage) and experience an endurance of more than 30, 000 cycles. These ultra-thin all-solid-state micro-supercapacitors bring strong benefits for on-chip energy storage and open up interesting new avenues for autonomous and flexible electronic microsystems. Graphical abstract: Highlights: Best reported electrical performance in terms of energy and power density. 100 nm thin solid-state supercapacitor fabricated on rigid and flexible substrates. LiPON and Co3 O4 as active materials were used. High temperature stability up to 215 °C depending on the nominal voltage.