Flexible micro supercapacitor and triboelectric nanogenerator based on laser-induced graphene for self-powered applications
Mario César A. de Oliveira,
Andre L. Freire,
Iuri C.M. Candido,
Younes Messaddeq,
Jerome Lapointe,
Julie Fréchette,
Réal Vallée,
Helinando P. de Oliveira
Affiliations
Mario César A. de Oliveira
Institute of Materials Science, Federal University of São Francisco Valley, Avenida Antônio Carlos Magalhães, 510 - Santo Antônio, Juazeiro, BA, 48902-300, Brazil
Andre L. Freire
Institute of Materials Science, Federal University of São Francisco Valley, Avenida Antônio Carlos Magalhães, 510 - Santo Antônio, Juazeiro, BA, 48902-300, Brazil
Iuri C.M. Candido
Institute of Materials Science, Federal University of São Francisco Valley, Avenida Antônio Carlos Magalhães, 510 - Santo Antônio, Juazeiro, BA, 48902-300, Brazil
Younes Messaddeq
Center d’Optique, Photonique et Laser, Université Laval, 2375 Rue de la Terrasse, Québec, QC, G1V 0A6, Canada
Jerome Lapointe
Center d’Optique, Photonique et Laser, Université Laval, 2375 Rue de la Terrasse, Québec, QC, G1V 0A6, Canada
Julie Fréchette
Center d’Optique, Photonique et Laser, Université Laval, 2375 Rue de la Terrasse, Québec, QC, G1V 0A6, Canada
Réal Vallée
Center d’Optique, Photonique et Laser, Université Laval, 2375 Rue de la Terrasse, Québec, QC, G1V 0A6, Canada
Helinando P. de Oliveira
Institute of Materials Science, Federal University of São Francisco Valley, Avenida Antônio Carlos Magalhães, 510 - Santo Antônio, Juazeiro, BA, 48902-300, Brazil; Corresponding author.
The development of graphene-based electrodes for application in energy storage and energy harvesting devices represents an important strategy for producing wearable devices with requisites of flexibility and good electrochemical performance. Herein, the use of laser-induced graphene (LIG) has been explored as a simple and efficient method for the production of interdigitated microsupercapacitors (μSCs) and back electrodes for triboelectric nanogenerators (TENGs) active layers by direct production of graphene from Kapton polyimide and by the transference of the pattern to polydimethylsiloxane (a typical tribonegative layer for TENG). An open circuit voltage of 189.7 V, short circuit current of 39.8 μA, and power of 302.5 μW (power density of 20.2 μW/cm2) was observed for the conventional TENG while an areal capacitance of 2.5 mF/cm2 with good retention in the energy generation and cyclability in energy storage was observed for the microsupercapacitor. The most relevant aspect to be considered is a single-step method for transference of back-electrode to the Poly(dimethylsiloxane) requiring minimal processing steps for morphology control in the friction layer and self-powered behavior for integration of TENG/microsupercapacitor in a power unit cell.
