Renata V. Lima, Camilla K. Boaron, Tatiana L. Valerio, Mayara R. Fornari, Antonio S. Mangrich, Marcio Vidotti, Bruna M. Hryniewicz
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引用次数: 0
Abstract
Flexible electrodes have attracted significant interest in the development of different electrochemical systems, especially in energy storage devices development. In this context, flexible supercapacitors are attracting attention by offering mechanical flexibility, light weight and optimal energy, and power densities to meet the demands of future innovations in wearable technology, smart textiles, and other flexible electronic applications. Nonetheless, effectively uniting low-cost electrode production with high performance is still a challenge. In this work, a new substrate based on pyrolyzed cotton fabric was developed using an atmosphere of N2 with benzaldehyde vapor during the pyrolysis process. The process resulted in the formation of a conductive fabric with graphitic characteristics, including high conductivity, as demonstrated by the reduction in sheet resistance from 2949 ± 2728 Ω sq−1 (measured in pyrolysis without benzaldehyde vapor) to 174 ± 67 Ω sq−1, in the pyrolysis process conducted with the atmosphere modifier. The fabric also exhibited a hydrophobic surface, with a mean contact angle of 118° ± 2, and featured interconnected fibers of untreated cotton. To enhance the electrochemical properties of the material, a simple methodology for one-pot chemical synthesis of AuNPs@PPy was proposed, where pyrrole monomer was used as the reducing agent, forming AuNPs capped by PPy with a mean diameter of 7 ± 2 nm. The material was characterized by scanning electron microscopy and transmission electron microscopy images, elemental mapping, Fourier-transform infrared spectroscopy, and electrochemical methods. The presence of the composite improved the specific capacitance of the electrode, obtaining a value of 30.4 mF cm−2 at a current density of 0.25 mA cm−2, presenting a forward-looking perspective on harnessing cotton fabric residues to construct eco-friendly high-performance devices, especially in supercapacitors development.
期刊介绍：
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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