Observably boosted electrochemical performances of roughened graphite sheet/polyaniline electrodes for use in flexible supercapacitors

Li, Guangli; Ren, Mengyao; Zhou, Haihan

doi:10.1016/j.surfin.2022.101874

Cited by 23 publications

(20 citation statements)

References 42 publications

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“…To this end, it is quite essential to establish an ideal electrode-tissue interface, for which the implanted electrodes elicit less tissue response and meanwhile neurons grow towards the electrodes. The electrode materials used are the key factor to determine the behaviors of the electrodes in vivo, including the tissue response initiated and affinity to neurons [10,11].…”

Section: Introductionmentioning

confidence: 99%

Significantly improved cell affinity of polydimethylsiloxane enabled by a surface-modified strategy with chemical coupling

Rao

Liu

Zhou

2022

J Mater Sci: Mater Med

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Polydimethylsiloxane (PDMS) is a commonly used insulation/packaging material for implantable neural electrodes. Nevertheless, the PDMS-initiated tissue response would lead to the deterioration of the electrode performances post-implantation, owing to its intrinsic hydrophobic and cell-repellent surface. The conventional physical coatings by hydrophilic hydrogels or bioactive molecules are unable to maintain during the long-term implantation due to their low stability by physical adhesion. In this work, we first anchor both hydrophilic polyethylene glycol (PEG) and bioactive molecule poly-L-lysine (PLL) on the PDMS surface by chemical coupling to change the PDMS surface from hydrophobic and cell-repellent to hydrophilic and cell-adhesive. XPS tests indicate the chemically coupled modification layers are stable on the PDMS surface after experiencing a harsh rinse process. Contact angle measurements show that the use of PEG 600 with the moderate molecular weight results in the highest hydrophilicity for the resulting PDMS-PEG-PLL. PC12 cell evaluation results exhibit that the PDMS-PEG-PLL with PEG 600 leads to significantly larger cell adhesion area, more neurite number, and longer neurite length than the PDMS. The PDMS-PEG-PLL with PEG 600 featuring stable modification layers, high hydrophilicity, and superior cell affinity has great potential in stabilizing the neural electrode-tissue interface for the long-term implantation.

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Section: Introductionmentioning

confidence: 99%

Significantly improved cell affinity of polydimethylsiloxane enabled by a surface-modified strategy with chemical coupling

Rao

Liu

Zhou

2022

J Mater Sci: Mater Med

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“…The main hindrances for the electrode are smooth surfaces, limited flexibility, low surface area with porosity, and more contact resistance between the electroactive materials and the current collector leading to low device performance. ,− Therefore, further research requires to address those limitations and to improve the output performance. Paper-based supercapacitors have provoked considerable attention due to their lightweight, small size, flexibility, and ease of integration with textile technology for versatile applications. ,,− However, the previously reported paper-based supercapacitors usually involve complex processes, usage of binder and conductive additives, and meet possible structural instabilities. ,,− Hence, further research requires to address those limitations and improve the output performance.…”

Section: Introductionmentioning

confidence: 99%

Flexible, Lightweight, and Ultrabendable RuO₂–MnO₂/Graphite Sheets for Supercapacitors

et al. 2022

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In the present work, we have introduced lightweight, ultrabendable, rough graphite sheets on a polyimide tape substrate as a current collector. The flexible current collector was fabricated by the peel-off method. The as-prepared graphite-sheetcoated polyimide substrate is ultraflexible (bendable, rollable, and twistable), thin, and lightweight, has better conductivity, high mechanical durability, and ease of fabrication, and is cost-effective, rough, and environment friendly. The fabricated flexible current collector could be directly used as the substrate for constructing RuO 2 −MnO 2 /graphite flexible supercapacitors. The as-prepared electrode delivered a maximum gravimetric capacitance of 183 F g −1 (73.5 mF cm −2 ) at a current density of 1 A g −1 with better rate capability and 96% capacitance retention (after 5000 cycles). The better electrochemical performance of the electrode is due to the rough surface and good electrical conductivity of the current collector leads to the better attachment of active material and rapid ions/electron transfer.

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“…It offers various advantages such as better controllability, durability, and energy savings 8‐13 . Supercapacitors are energy storage devices widely used due to their notable properties, including a high power density, high energy density, durability, rapid charging ability, and low fabrication costs 14‐17 . The combination of an EC device and a supercapacitor can produce a device that directly indicates the energy storage levels through a change in colour in real‐time, making storage easier to monitor 18,19 …”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10][11][12][13] Supercapacitors are energy storage devices widely used due to their notable properties, including a high power density, high energy density, durability, rapid charging ability, and low fabrication costs. [14][15][16][17] The combination of an EC device and a supercapacitor can produce a device that directly indicates the energy storage levels through a change in colour in real-time, making storage easier to monitor. 18,19 Based on their charge-storage mechanisms, EC materials have demonstrated battery-type characteristics that deliver a high energy density without compromising the power density.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured metal‐doped Prussian blue thin film electrodes for efficient and stable electrochromic supercapacitors

Chavan

Shin

Han

et al. 2022

Intl J of Energy Research

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The combined features of functional electronic devices have attracted significant attention because of high demand for promising energy technologies. Of particular interest are electrochromic (EC) supercapacitors, which can visually display the level of stored energy in real-time. Here, we demonstrate the EC energy storage properties of pure and doped Prussian blue (PB) thin films fabricated using electrodeposition. The pure PB films produced various colours at different potentials during their charging-discharging cycles, but they suffered from instability. To overcome this, we doped PB films with ruthenium (Ru), iridium (Ir), and molybdenum (Mo). Of the doped specimens, the Mo-doped PB films exhibited the most promising EC energy storage properties, with a specific capacity of 399.7 F g À1 at 1 A g À1 , a colouration efficiency of 110.2 cm 2 C À1 , and an excellent optical density difference of 0.92. The Modoped PB films also demonstrated ultra-fast colouration and bleaching behaviour within 3.25 and 4.04 seconds, respectively. Our experimental findings suggest that Metal-doped PB films can be employed for practical application.

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Observably boosted electrochemical performances of roughened graphite sheet/polyaniline electrodes for use in flexible supercapacitors

Cited by 23 publications

References 42 publications

Significantly improved cell affinity of polydimethylsiloxane enabled by a surface-modified strategy with chemical coupling

Significantly improved cell affinity of polydimethylsiloxane enabled by a surface-modified strategy with chemical coupling

Flexible, Lightweight, and Ultrabendable RuO₂–MnO₂/Graphite Sheets for Supercapacitors

Nanostructured metal‐doped Prussian blue thin film electrodes for efficient and stable electrochromic supercapacitors

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Observably boosted electrochemical performances of roughened graphite sheet/polyaniline electrodes for use in flexible supercapacitors

Cited by 23 publications

References 42 publications

Significantly improved cell affinity of polydimethylsiloxane enabled by a surface-modified strategy with chemical coupling

Significantly improved cell affinity of polydimethylsiloxane enabled by a surface-modified strategy with chemical coupling

Flexible, Lightweight, and Ultrabendable RuO2–MnO2/Graphite Sheets for Supercapacitors

Nanostructured metal‐doped Prussian blue thin film electrodes for efficient and stable electrochromic supercapacitors

Contact Info

Product

Resources

About

Flexible, Lightweight, and Ultrabendable RuO₂–MnO₂/Graphite Sheets for Supercapacitors