Free-Standing, Flexible Nanofeatured Polymeric Films Prepared by Spin-Coating and Anodic Polymerization as Electrodes for Supercapacitors

Abstract

Flexible and self-standing multilayered films made of nanoperforated poly(lactic acid) (PLA) layers separated by anodically polymerized poly(3,4-ethylenedioxythiophene) (PEDOT) conducting layers have been prepared and used as electrodes for supercapacitors. The influence of the external layer has been evaluated by comparing the charge storage capacity of four- and five-layered films in which the external layer is made of PEDOT (PLA/PEDOT/PLA/PEDOT) and nanoperforated PLA (PLA/PEDOT/PLA/PEDOT/PLA), respectively. In spite of the amount of conducting polymer is the same for both four- and five-layered films, they exhibit significant differences. The electrochemical response in terms of electroactivity, areal specific capacitance, stability, and coulombic efficiency was greater for the four-layered electrodes than for the five-layered ones. Furthermore, the response in terms of leakage current and self-discharge was significantly better for the former electrodes than for the latter ones.

Merging Bioactuation and Biocapacitive Properties: A 3d Bioprinted Devices to Self-Stimulate Using Self-Stored Energy

“…7b. All the voltammograms exhibit an ideal symmetric rectangular shape, which indicates good capacitive performance, low contact resistance and notable reversibility (Pérez-Madrigal et al, 2017;Ruano et al, 2021). Meanwhile, the average AC obtained applying Eq S3 proved the capacitance performance of the constructs, especially when compared with the low capacitance of the bare carbon OrionHT electrode (Fig.…”

Highly Deformable Double‐Sided Neural Probe with All‐in‐One Electrode System for Real‐Time In Vivo Detection of Dopamine for Parkinson's Disease

“…These measurements were conducted at room temperature, employing a scan rate of 150 mV s −1 in a 100 µM DA solution, encompassing 50 consecutive oxidation–reduction cycles. The quantification of electrochemical activity was expressed as the percentage loss of electrochemical activity (LEA; in %) (Equation (3)): [ 45–47 ] $$$$\begin{equation}{\mathrm{LEA}} = \frac{{\Delta Q}}{{{Q}_2}}*100 = \frac{{{Q}_2 - {Q}_\# }}{{{Q}_2}}\end{equation}$$$$where Δ Q denotes the difference between the oxidation charge (in C) of the second cycle ( Q 2 ) and the specific oxidation–reduction cycle under assessment ( Q # ). As depicted in Figure S3 (Supporting Information), in the case of the WE comprising Au/ZnO, a notable reduction in electrochemical activity becomes evident with an increasing number of oxidation–reduction cycles.…”

“…These measurements were conducted at room temperature, employing a scan rate of 150 mV s −1 in a 100 μM DA solution, encompassing 50 consecutive oxidation-reduction cycles. The quantification of electrochemical activity was expressed as the percentage loss of electrochemical activity (LEA; in %) (Equation ( 3)): [45][46][47]…”

Recent Advances in Functional Polymer Materials for Energy, Water, and Biomedical Applications: A Review

“…This distinctive type of polymer has been used in many important applications in the fields of the production and storage of energy, such as in energy assembly, energy storage, solar cells, batteries, photocatalysis materials, electrode materials, electrochromic devices, dye-sensitized electric cells, light emitting and sensing devices, and perovskite electric cells. They also have been used in other important applications, including as p-type conducting parts in thermoelectric generators, as well as being the polymer composites that are used in thermoelectric generators, piezoelectric materials, triboelectric generators, and super capacitors [61][62][63][64][65][66][67][68][69][70][71][72][73][74]. Figure 2 shows the general applications of these conducting polymers.…”