All solid state stretchable carbon nanotube based supercapacitors with controllable output voltage

The mechanical and electrical properties of direct-spun carbon nanotube mat-epoxy composites

“…These CNT mats are manufactured in industrial volumes by floating catalyst chemical vapour deposition (FCCVD) [6,7]; they are electrically conductive [8], possess an in-plane Young's modulus between 0.1 GPa and 10 GPa [9], a thermal conductivity between 20 W m -1 K -1 and 800 W m -1 K -1 [9], and a specific surface area in the range 1×10 5 m 2 kg -1 to 4.8×10 5 m 2 kg -1 [10][11][12][13][14]. Their favourable electrical, mechanical and thermal properties, and electrochemical stability, have led to research interest in their application as multifunctional current collectors for flexible [15] or stretchable [16] electronic products and for structural energy storage devices [17][18][19]. The CNT mat microstructure comprises an interconnected network of CNT bundles.…”

Using a mixture of vinasse-contaminant and H3PO4 as an efficient electrolyte for high performance flexible carbon nanotube-based supercapacitors

“…The inset in figure 3(a) shows a zoom of such spectrum, which shows two peaks centered at 870 and 1540 cm −1 that correspond to the C=C and C-O bonds, respectively [54]. The FTIR spectrum of the CNT electrode used in the SC device showed several bands centered at 3280, 2920, 2340, 1710, 1610, 1237, 1047 and 525 cm −1 (see red curve in figure 3(a)), which are related to O-H stretch from carboxylic groups (C-OH and O=C-OH), -CH 3 (stretching) bonds, O-H [55,56]. Thus, the presence of these peaks confirmed the formation of carboxylic groups and amines bonds on the surface of the CNT composite electrode after interaction with the electrolyte made with vinasse, which in turn, contains N and P elements (see table 1).…”