Facile preparation of commercial Bi2O3 nanoparticle decorated activated carbon for pseudocapacitive supercapacitor applications

Üner, Osman; Aslan, Naim; Sarıoğlu, Akın; Semerci, Fatih; Koç, Mümin Mehmet

doi:10.1007/s10854-021-06149-1

Cited by 15 publications

(2 citation statements)

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“…2). [34][35][36][37][38]40,56,57 Although the specific capacitance of Bi 2 O 3 -MWCNTs2 prepared in our work is lower than that reported by Qiu and Uner, 45,56 we found that the potential window of charging-discharging used in our work (−1.2-0.2 V) is wider than that in their work (−1.2-0 V in Qiu's work, and 0.25-0.6 V in Uner's work). In other words, a specific capacitance of Bi 2 O 3 -MWCNTs2 can be further improved when the potential window is properly compressed.…”

Section: Epd Kinetics Study Of Bi 2 O 3 and Mwcnts Coatingmentioning

confidence: 99%

“…In contrast, increasing the current density has a significant negative effect on the specific capacitances of pure Bi 2 O 3 , Bi 2 O 3 -MWCNTs1, and Bi 2 O 3 -MWCNTs3 electrodes, which can be observed in Figure S7. In the case of relatively high loading of active materials (>1 mg cm −2 ), the specific capacitances of the Bi 2 O 3 -MWCNTs2 are at the top level (Table2) [34][35][36][37][38]40,56,57. Although the specific capacitance of Bi 2 O 3 -MWCNTs2 prepared in our work is lower than that reported by Qiu and Uner,45,56 we found that the potential window of charging-discharging used in our work (−1.2-0.2 V) is wider than that in their work (−1.2-0 V in Qiu's work, and 0.25-0.6 V in Uner's work).…”

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confidence: 99%

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Electrophoretic co‐deposition of Bi₂O₃–multiwalled carbon nanotubes coating as supercapacitor electrode

Zhang

Xiang

2022

J Am Ceram Soc.

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Nafion is suggested as an efficient assistant in preparing supercapacitor by employing nanoparticles. In this work, using a bi‐additive of 0.10‐mM NaOH + 0.10 g L−1 Nafion, Nafion‐assisted electrophoretic co‐deposition of Bi2O3–multiwalled carbon nanotubes (MWCNTs) coating is successfully realized in ethanol solvent. The capacitance performances of the electrophoretic coatings in 6.0‐M KOH electrolyte are investigated by cyclic voltammetry and galvanostatic charge–discharge techniques. Comparing with Bi2O3 coating prepared with electrophoretic deposition (EPD) by employing other additive (such as polyethyleneimine), the Bi2O3 coating prepared by Nafion‐assisted EPD shows a better capacitance performance. Benefiting from the improvement in coating conductivity caused by MWCNTs, with a small additional amount of 4.0 wt.%, the Bi2O3–MWCNTs coating exhibits an amazing 164% increase of mass‐specific capacitance (473 F g−1 at the current density of 1.0 A g−1) in comparison with pure Bi2O3 coating (179 F g−1 at the current density of 1.0 A g−1). The cyclic stability test exhibits excellent capacitance retention of 88.7% over 3000 cycles at a constant current density of 10.0 A g−1. This work combines the advantages of MWCNTs, Nafion, and EPD to provide a facile route for preparing Bi2O3‐based coating as a high‐performance supercapacitor electrode.

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Section: Epd Kinetics Study Of Bi 2 O 3 and Mwcnts Coatingmentioning

confidence: 99%

mentioning

confidence: 99%

Electrophoretic co‐deposition of Bi₂O₃–multiwalled carbon nanotubes coating as supercapacitor electrode

Zhang

Xiang

2022

J Am Ceram Soc.

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High‐performance supercapacitors using nanostructured polyaniline‐based carbon: Effect of electrolytes

Madhushani,

Perera,

Lin

et al. 2024

Energy Storage

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Developing high‐performance materials for electrochemical energy storage devices such as batteries, and supercapacitors is a significant topic in material chemistry‐based research. The high consumption and limited availability of numerous materials used in energy devices lead to the development of alternative, effective, and cost‐effective materials exhibiting superior electrochemical chemical performance. A porous activated carbon, derived from polyaniline (PANI) synthesized through chemical oxidative polymerization, can be considered a viable solution in this context. In this study, the electrochemical window of the nitrogen‐doped porous activated carbon was enhanced through a combined synthesis process involving the carbonization and activation of PANI nanotubes with KOH. Moreover, alternations in surface area and porosity were evaluated using BET analysis for the samples having PANI to KOH ratios 1:0.5, 1:1, and 1:2. The results revealed a significant improvement in surface area and pore volume, increasing from 18 to 3535 m2/g from pure PANI to chemically treated samples. Among those materials, the PANI to KOH ratio of 1:1 exhibited the highest surface area of 3535 m2/g and the highest pore volume of 0.7131 cm3/g. Subsequently, the electrochemical performance of all materials was evaluated using a three‐electrode cell system and a symmetrical coin‐cell device. Electrodes fabricated with PANI to KOH ratio of 1:1 by weight showed better electrochemical performance in an aqueous electrolyte (6 M KOH) in both systems. This material exhibited the highest capacitance of 378 F/g (at 0.5 A/g) in the three‐electrode system and 143 F/g (at 0.5 A/g) in the SCCD. The SCCD achieved a maximum energy density of 23 Wh/kg with a power density of 544 W/kg. Additionally, these supercapacitors provided a good Coulombic efficiency of about 99% with capacitance retention of 97% at 7 A/g current density after 10 000 charge–discharge cycles. Further, this study expanded by investigating variations of electrochemical performance across various electrolytes, including aqueous, organic, and ionic liquids in coin‐cell supercapacitors. The findings reveal promising results, suggesting potential commercial applications for this facile approach to synthesize nitrogen‐doped activated carbon, especially for supercapacitors with aqueous electrolytes.

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Surfactant-mediated synthesis of bismuth oxide nanostructures as negative electrode for supercapacitors

Karthikeyan,

Saravanakumar,

Johnson

et al. 2024

Appl. Phys. A

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Facile preparation of commercial Bi2O3 nanoparticle decorated activated carbon for pseudocapacitive supercapacitor applications

Cited by 15 publications

References 50 publications

Electrophoretic co‐deposition of Bi₂O₃–multiwalled carbon nanotubes coating as supercapacitor electrode

Electrophoretic co‐deposition of Bi₂O₃–multiwalled carbon nanotubes coating as supercapacitor electrode

High‐performance supercapacitors using nanostructured polyaniline‐based carbon: Effect of electrolytes

Surfactant-mediated synthesis of bismuth oxide nanostructures as negative electrode for supercapacitors

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Facile preparation of commercial Bi2O3 nanoparticle decorated activated carbon for pseudocapacitive supercapacitor applications

Cited by 15 publications

References 50 publications

Electrophoretic co‐deposition of Bi2O3–multiwalled carbon nanotubes coating as supercapacitor electrode

Electrophoretic co‐deposition of Bi2O3–multiwalled carbon nanotubes coating as supercapacitor electrode

High‐performance supercapacitors using nanostructured polyaniline‐based carbon: Effect of electrolytes

Surfactant-mediated synthesis of bismuth oxide nanostructures as negative electrode for supercapacitors

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Product

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Electrophoretic co‐deposition of Bi₂O₃–multiwalled carbon nanotubes coating as supercapacitor electrode

Electrophoretic co‐deposition of Bi₂O₃–multiwalled carbon nanotubes coating as supercapacitor electrode