The impact of Fe3+ doping on the flexible polythiophene electrodes for supercapacitors

Wu, Kezhong; Jie, Zhao; Wu, Ruitao; Ruan, Bei; Liu, Huating; Wu, Mingxing

doi:10.1016/j.jelechem.2018.06.052

Cited by 38 publications

(8 citation statements)

References 31 publications

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“…In Fig. 6 (b), the CV curve for the PTh electrode clearly shows redox peaks, indicating its pseudocapacitive behaviour attributed to doping and de-doping of ions in and out of the PTh chain 55 . Same as observed for the SNs electrode, increasing the scan rate from 5 mV/s to 100 mV/s for the PTh electrode increases current response and peak position shifts to the positive potential and negative potential for the oxidation process and the reduction process, respectively, attributing to fast faradic reaction at the electrodeelectrolyte interface 50 .…”

Section: Analysis Of the Prepared Electrode Materialsmentioning

confidence: 99%

Design of supercapacitor electrodes constructed with silicene-polythiophene nanocomposites

Molele

Saliu

Ramontja

2022

Preprint

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In this study silicene nanosheets (SNs) were prepared by molten salt chemical exfoliation, and polythiophene (PTh) and SNs/PTh nanocomposites were prepared via in-situ chemical oxidative polymerisation method. Raman spectroscopy confirmed the formation of SNs, PTh, and a series of SNs/PTh nanocomposites in three different ratios. XRD confirmed the formation of crystalline SNs, the amorphous nature of PTh, and crystalline SNs and amorphous PTh in the nanocomposites. FESEM revealed corrugated sheets of silicene, aggregated PTh with granular globes and flakes, in the case of SNs/PTh nanocomposites, PTh granular globes and flakes are fairly dispersed over the surface of the SNs. TEM showed almost transparent and reduced-stacking of SNs, aggregated PTh flakes and SNs/PTh nanocomposites exhibited fairly and even PTh flakes over SNs surface. The electrochemical results showed that SNs/PTh nanocomposites exhibit higher specific capacitance, energy density and stable cycling performance compared to individual SNs and PTh. Cyclic voltammetry (CV) measurements showed that the best performing supercapacitor electrode, SNs/PTh-67 nanocomposite, attained a specific capacitance of 276.25 F/g at a scan rate of5 mV/s and delivered energy density of 13.8 Wh/kg. SNs/PTh-67 nanocomposite also exhibited excellent cycling stability with capacitance retention of 85.9% of its initial capacitance after 2000 consecutive charge-discharge cycles at a current density of 4 A/g. This study provides the first insight into the feasibility of using SNs/PTh-67 nanocomposite as a stable and high-performance electrode material for supercapacitors.

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Section: Analysis Of the Prepared Electrode Materialsmentioning

confidence: 99%

Design of supercapacitor electrodes constructed with silicene-polythiophene nanocomposites

Molele

Saliu

Ramontja

2022

Preprint

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“…With these properties, the composite displayed potential applicability in flexible electronics. Wu et al 641 investigated the effect of Fe 3+ doping on PTh-based flexible SC electrodes. The flexible electrode was prepared making a PTh film on carbon cloth though electrodeposition in the presence of FeCl 3 .…”

Section: Conducting Polymer-based Materials For Supercapacitorsmentioning

confidence: 99%

Advances in pseudocapacitive and battery-like electrode materials for high performance supercapacitors

et al. 2022

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“…The specific capacitance of the original PTh was 77.2 F g À 1 at 0.5 A g À 1 , while the Fe 3 + -doping increased the specific capacitance to 108.1 F g À 1 and the retention rate to 21.2 % after 1000 charge/discharge cycles. [190] Note that the thiophene-based polymers are also promising materials for other electrochemical applications in addition to supercapacitors. For example, Abigail et al reported a series of dioxythiophene-based polymers and investigated their redox application including pseudocapacitive and electrochromic behaviors.…”

Section: Linear-structured Polymersmentioning

confidence: 99%

Redox‐Active Organic Electrode Materials for Supercapacitors

Ding,

Xiao,

et al. 2023

Batteries & Supercaps

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Due to their prominent power density, supercapacitors carve out a niche among all the energy storage systems. However, it is also well known that the energy density of supercapacitors takes no advantage over lithium‐ion batteries, the current star energy storage device. Therefore, substantial efforts have been paid to improving the energy density of supercapacitors not at the expense of its power density. To develop electrode with high capacitance is a direct and efficient way to increase the energy storage capability of supercapacitors. Organics whose molecular structure can be diversely designed to achieve high pseudocapacitance arising from redox active units in their backbone are good candidates as electrode materials for supercapacitors. Herein, this review summarizes recent progress of redox‐active organic electrode materials for supercapacitors and their pseudocapacitive energy storge mechanisms based on different organic functional groups. From the aspects of their preparation approaches, molecular design and the resultant electrochemical performances, the focus is to probe the relationship between the energy storage mechanisms and the molecular structure of redox‐active units and provide some insights for the further development of organic supercapacitor electrodes.

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The impact of Fe3+ doping on the flexible polythiophene electrodes for supercapacitors

Cited by 38 publications

References 31 publications

Design of supercapacitor electrodes constructed with silicene-polythiophene nanocomposites

Design of supercapacitor electrodes constructed with silicene-polythiophene nanocomposites

Advances in pseudocapacitive and battery-like electrode materials for high performance supercapacitors

Redox‐Active Organic Electrode Materials for Supercapacitors

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