Electrospray Deposition of PEDOT:PSS on Carbon Yarn Electrodes for Solid-State Flexible Supercapacitors

Abstract

The increasing demand for flexible electronic devices has risen due to the high interest in electronic textiles (e-textiles). Consequently, the urge to power e-textiles has sparked enormous interest in flexible energy storage devices. One-dimensional (1D) configuration supercapacitors are the most promising technology for textile applications, but often their production involves complex synthesis techniques and expensive materials. This work unveils the use of the novel electrospray deposition (ESD) technique for the deposition of poly­(3,4-ethylenedioxythiophene)–poly­(styrene sulfonate) (PEDOT:PSS). This deposition methodology on conductive carbon yarns creates flexible electrodes with a high surface area. The deposition conditions of PEDOT:PSS were optimized, and their influence on the electrochemical performance of a 1D symmetric supercapacitor with a cellulose-based gel as an electrolyte and a separator was evaluated. The tests herein reported show that these capacitors exhibited a high specific capacitance of 72 mF g–1, an excellent cyclability of more than 85% capacitance retention after 1500 cycles, and an outstanding capability of bending.

Electrospun PbS/PAN–PANI Carbon Nanofibers Decorated on Carbon Cloth as Pseudo-Electrochemical Capacitor Material

“…This observation underscores the significant influence of electrolyte composition on the electrochemical behavior of the PbS CNFs electrode. The observed decrease in specific capacitance with increasing current density is attributed to the restricted charging and discharging time, which influences the overall capacitance due to time constraints during electrochemical processes …”

“…The observed decrease in specific capacitance with increasing current density is attributed to the restricted charging and discharging time, which influences the overall capacitance due to time constraints during electrochemical processes. 49 EIS was conducted to scrutinize the electrochemical attributes of the electrode, employing two distinct electrolyte solutions (6 M KOH and 1 M H 2 SO 4 ). The electrochemical impedance of the PbS CNFs electrodes has been assessed over a frequency spectrum spanning from 1 Hz to 100 MHz.…”

Recent advances in the construction and application of stretchable PEDOT smart electronic membranes

“…Scaffolds containing PEDOT are superior to PVA scaffolds in terms of physicochemical properties and cell viability, and the synergistic effect of electrospun scaffolds and electrical stimulation can facilitate the repair of neural tissues. Electrospraying can produce uniform nanostructures, and Moniz et al 209 used electrospraying to deposit PEDOT:PSS on carbon fibers with a diameter of about 10 μm, forming a nanoporous conductive coating, which is suitable for charge storage. The as-fabricated fiber supercapacitor exhibits a high specific capacitance of 72 mF g −1 , and excellent bending cycling performance (capacitance retention exceeds 85% after 1500 cycles).…”

Perspective in Textile Energy Storage Integrated Textile Elements: Textile Materials, Structure, and Manufactured Methods

“…Therefore, some interface engineering works is essential to develop for increasing the contact area and enhancing the suitability. [ 22,30,31 ] In our previous work, we fabricated a flexible 1D electrode based on stainless steel fibers for textile‐based supercapacitors. [ 77 ] To overcome the disadvantages of metallic fiber, the twisting technology and acid treatment were applied to enhance the elongation and cohesion between metallic fibers.…”