Speaker
Description
Recently, the demand for intelligent textiles and smart materials is growing in the world motivated by the market requests for innovative high-performance products [1]. Electrochemical energy storage systems like supercapacitors (SCs) are promising technologies to develop smart functionalities on textiles, particularly for the area of health and wellness [2]. Screen-printing has long been used in the printing industry, with the advantage of being a low-cost and scalable process [1].
In the present study, inks containing different MWCNT concentrations (17.5, 26.3, 35.1, 43.9, 52.6 mg mL-1) were prepared to reach optimized screen-printing properties. For all tested conditions, the amount of surfactant, binder, additive and solvent were maintained constant. Interdigital planar TSCs were fabricated by applying PVA-H3PO4 solid-gel electrolyte on top of the interdigitated electrodes.
For all the TSCs, the electrochemical performance was conducted by cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD) tests in a standard two-electrode cell configuration. From the CV curves, a nearly rectangular shape without redox-based humps was observed for all TSCs, proving their electric double-layer (EDL) type behavior.
Acknowledgements:
Work funded by FEDER through COMPETE 2020 (POCI) and by Fundação Ciência e Tecnologia (FCT)/MCTES through Program PT2020 (project PTDC/CTM-TEX/31271/ 2017) and through national funds (UIDB/50006/2020 and UIDB/04968/2020). R.S.C. thanks the grant funding from FEDER through POCI-01-0247-FEDER-039833. J.S.T. and C.P. thank FCT for PhD scholarship SFRH/BD/145513/2019 and FCT Investigator contract IF/01080/2015, respectively. S.M.S thanks the project PTDC/CTM-TEX/31271/ 2017 for this research contract.
References:
1. Pereira, C. et al. Handbook of Functionalized Nanomaterials for Industrial Applications, 611-714 (2020)
2. Costa, R.S. et al. J Mater Sci., 10121-10141 (2020)
