A self-supported electrode for supercapacitors based on nanocellulose/multi-walled carbon nanotubes/polypyrrole composite

Lv, Peng; Meng, Yuedong; Song, Lingxia; Pang, Hao; Liu, Weiqu

doi:10.1039/d0ra08040c

Cited by 11 publications

(5 citation statements)

References 47 publications

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“…The smaller particle size may explain the observation that Ppy coatings deposited at 55 °C produced greater cyclability, likely due to the small size facilitating the mobility of species and electron transport during the oxidation and reduction reactions. 66 The surface structure of the Ppy films in Figure 8d is rather similar to those in Figure 8c when the GO (20 wt %) particles were added into the matrix, but the roughness and surface porosity of the film seem to be greater. The average grain size for the Ppy/GO film deposited at 55 °C is ∼70 nm, as shown in Figure 8f.…”

Section: Structural Characterization 321 Surface Morphology Studymentioning

confidence: 58%

“…Visual comparison with Figure a,b shows that these deposits have a much finer particle size. The smaller particle size may explain the observation that Ppy coatings deposited at 55 °C produced greater cyclability, likely due to the small size facilitating the mobility of species and electron transport during the oxidation and reduction reactions . The surface structure of the Ppy films in Figure d is rather similar to those in Figure c when the GO (20 wt %) particles were added into the matrix, but the roughness and surface porosity of the film seem to be greater.…”

Section: Results and Discussionmentioning

confidence: 87%

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Effect of Graphene Oxide and Temperature on Electrochemical Polymerization of Pyrrole and Its Stability Performance in a Novel Eutectic Solvent (Choline Chloride–Phenol) for Supercapacitor Applications

et al. 2022

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Polypyrrole (Ppy)-modified graphene oxide (GO) electrodes were synthesized for the first time in a choline chloride–phenol-based deep eutectic solvent at various temperatures via electrochemical methods without the addition of any inorganic or organic catalysts. The surface morphologies and structures of the modified films were assessed via scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction techniques. The electrochemical properties and stability of the modified electrodes were investigated via cyclic voltammetry and impedance spectroscopy at various temperatures and scan rates. The results showed that the specific capacitance of the nanocomposites decreased with increasing scan rate during cycling. Additionally, the specific capacitances of the pure Ppy and Ppy/GO films increased with increasing temperature of the electrolyte (monomer-free), attributed to the reduction in viscosity at elevated temperature. The specific capacitances at 5 mV s –1 were found to be 1071.78 and 594.79 F g –1 for Ppy/GO (20 wt %) at 50 and 25 °C, respectively. It was also observed that the resistance in the cell decreased with increasing electrolyte temperature. Ppy/GO at 50 mV s –1 was found to have the highest capacitance retention of 85% after 2000 cycles, showing better cycling stability than the pure Ppy film. Herein, the incorporation of GO in the Ppy matrix led to improved specific capacitance and cyclic stability, suggesting that Ppy/GO could represent a promising electrode material for supercapacitor applications.

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Section: Structural Characterization 321 Surface Morphology Studymentioning

confidence: 58%

Section: Results and Discussionmentioning

confidence: 87%

Effect of Graphene Oxide and Temperature on Electrochemical Polymerization of Pyrrole and Its Stability Performance in a Novel Eutectic Solvent (Choline Chloride–Phenol) for Supercapacitor Applications

et al. 2022

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“…Inspired by the waveform metal electrodes with stretchable functionality, CNT-based conductive nanomaterial networks have been used as sensors for body signals, and are fabricated by transfer-printing hydrogel templated serpentine patterns onto the skin [29]. There are several research for CNT-based conductive nanomaterial networks with cellulose materials to thin film research with 600 bending cycles [30], 3D printing materials [31], and energy materials [32]. However, without binder materials such as carboxymethyl cellulose (CMC), the structure of the electronic device incorporating the CNT wave patterned electrode can be easily deformed by external forces or solutions.…”

Section: Introductionmentioning

confidence: 99%

Structural conductive carbon nanotube nanocomposites for stretchable electronics

Ahn

Noh²,

Kim³

et al. 2023

Mater. Res. Express

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Carbon nanotube (CNT) nanocomposites have been widely used for electronic devices because of their high conductivity and ease of processing. However, these nanocomposites have limited functionality because of their rigid intrinsic mechanical properties. In this study, we fabricated a stretchable serpentine structure using a CNT nanocomposite with a carboxymethyl cellulose binder. For a flexible mold, a polydimethylsiloxane (PDMS) was cast by the stretchable serpentine structure fabricated by a 3D printer. The CNT nanocomposite slurry was squeegeed into the serpentine-patterned PDMS mold. Fourier-transform infra-red spectroscopy and scanning electron microscopy were used to analyze the material properties of the nanocomposites with 15-45 wt% CNTs. We analyzed the serpentine grid structure using current-voltage curves, strain resistance values, and the Joule heating effect. Next, we developed the structural CNT nanocomposite electrode (SCNE) that was insulated by PDMS, and induced a skin-warming effect by Joule heating. Furthermore, light emitting diodes (LEDs) were implanted in series into a T-shaped linear SCNE, which had greater stretchability. The nine LEDs embedded in the SCNE were successfully operated by applying 20 V during the bending of the structure. Finally, the serpentine-shaped linear SCNEs with serially-implanted LEDs were programmed to light the LEDs in unison with the beat of a song.

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“…Without MWCNTs, the carbonized cellulose nanofiber‐activated carbon thin film only attained a capacitance of up to 88 F g −1 10 . Conductive polymers such as polyaniline (PANI) 11 and polypyrrole (PPy) 12‐15 were further incorporated to improve film conductivity. In addition to MWCNTs and carbon nanofibers, reduced graphene oxide (rGO) was extensively used to produce CNF‐based supercapacitors in recent works 16,17 .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of hybrid tin oxide‐cellulose nanocomposite as the flexible and thin supercapacitor

et al. 2023

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Microfibrillated cellulose (MFC) with reinforcing effects is a useful building block in the fabrication of flexible and thin supercapacitors. Herein, a hybrid tin oxide‐cellulose nanocomposite was hydrothermally produced and coated on MFC thin films to form a supercapacitor. The hybrid tin oxide‐cellulose thin films were structurally analyzed using scanning electrode microscopy, Fourier transform infrared spectroscopy and x‐ray diffraction. The cellulose thin film with the highest loading of hybrid tin oxide‐cellulose nanocomposite exhibited a specific capacitance of 225.88 F g−1 at 100 mV s−1 and 486.38 F g−1 at 20 mV s−1 in the three‐electrode electrochemical system. In addition, it revealed good cyclic stability up to 40 cycles run continuously with 95% cyclic retention. The high specific capacitance and superior cyclic stability could be related to the enhanced charge mobility and ion diffusion between the solid and electrolyte interface. The cellulose thin film coated with flower‐like hybrid nanocomposite showed great potential in energy storage.

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A self-supported electrode for supercapacitors based on nanocellulose/multi-walled carbon nanotubes/polypyrrole composite

Abstract: A robust self-supported electrode was prepared by a facile combination of ultrasonic dispersion and consequent in situ polymerization.

Cited by 11 publications

References 47 publications

Effect of Graphene Oxide and Temperature on Electrochemical Polymerization of Pyrrole and Its Stability Performance in a Novel Eutectic Solvent (Choline Chloride–Phenol) for Supercapacitor Applications

Effect of Graphene Oxide and Temperature on Electrochemical Polymerization of Pyrrole and Its Stability Performance in a Novel Eutectic Solvent (Choline Chloride–Phenol) for Supercapacitor Applications

Structural conductive carbon nanotube nanocomposites for stretchable electronics

Fabrication of hybrid tin oxide‐cellulose nanocomposite as the flexible and thin supercapacitor

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