Electrochemical performance of bridge molecule-reinforced activated carbon fiber-m-aminobenzenesulfonic acid-polyaniline for braidable-supercapacitor application

Zhu, Huijuan; Xie, Yibing

doi:10.1016/j.cej.2023.147416

Cited by 10 publications

(3 citation statements)

References 52 publications

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“…3.1 Electrochemical energy storage and conversion 3.1.1 Supercapacitor. Depending on the charge storage mechanism, supercapacitors 94,95 can be classied as electric double layer capacitor (EDLC), pseudocapacitor and the hybrid supercapacitor. [96][97][98] The electrostatic energy storage of EDLC [99][100][101] is achieved by charge separation in the Helmholtz double layer at the interface between the surface of electrode and the electrolyte.…”

Section: Applications Of Gallium-based Liquid Metalsmentioning

confidence: 99%

Interfacial interaction-induced super-wettability of gallium-based liquid metals: a review

Wang,

Xie

2024

J. Mater. Chem. A

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Section: Applications Of Gallium-based Liquid Metalsmentioning

confidence: 99%

Interfacial interaction-induced super-wettability of gallium-based liquid metals: a review

Wang,

Xie

2024

J. Mater. Chem. A

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“…These conductive polymers could conduct the reversible ion doping-dedoping process to provide superior capacitance [26][27][28]. The interfacial bonding strength between the doped conductive polymers and metal substrates is related to the electrochemical energy storage performance [29]. In addition, the reactive electrolytes also influence the electrical double-layer capacitance due to the interfacial adsorption on metal substrates and the Faradaic capacitance due to the ion doping state of conductive polymers.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Investigation of Lithium Perchlorate-Doped Polypyrrole Growing on Titanium Substrate

Xie,

Xu,

et al. 2024

Inorganics

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Lithium perchlorate-doped polypyrrole growing on titanium substrate (LiClO4-PPy/Ti) has been fabricated to act as electroactive electrode material for feasible electrochemical energy storage. A theoretical and experimental investigation is adopted to disclose the conductivity, electroactivity properties and interfacial interaction-dependent capacitance of LiClO4-PPy/Ti electrode. The experimental measurement results disclose that LiClO4-PPy/Ti reveals lower ohmic resistance (0.2226 Ω cm−2) and charge transfer resistance (2116 Ω cm−2) to exhibit higher electrochemical conductivity, a more reactive surface, and feasible ion diffusion to present higher double-layer capacitance (0.1930 mF cm−2) rather than LiClO4/Ti (0.3660 Ω cm−2, 65,250 Ω cm−2, 0.0334 mF cm−2). LiClO4-PPy/Ti reveals higher Faradaic capacitance caused by the reversible doping and dedoping process of perchlorate ion on PPy than the electrical double-layer capacitance of LiClO4/Ti caused by the reversible adsorption and desorption process of the LiClO4 electrolyte on Ti. Theoretical simulation calculation results prove that a more intensive electrostatic interaction of pyrrole N···Ti (2.450 Å) in LiClO4-PPy/Ti rather than perchlorate O···Ti (3.537 Å) in LiClO4/Ti. LiClO4-PPy/Ti exhibits higher density of states (57.321 electrons/eV) at Fermi energy and lower HOMO-LUMO molecule orbital energy gap (0.032 eV) than LiClO4/Ti (9.652 electrons/eV, 0.340 eV) to present the enhanced electronic conductivity. LiClO4-PPy/Ti also exhibits a more declined interface energy (−1.461 × 104) than LiClO4/Ti (−5.202 × 103 eV) to present the intensified interfacial interaction. LiClO4-PPy/Ti accordingly exhibits much higher specific capacitances of 0.123~0.0122 mF cm−2 at current densities of 0.01~0.10 mA cm−2 rather than LiClO4/Ti (0.010~0.0095 mF cm−2, presenting superior electroactivity and electrochemical capacitance properties. LiClO4-PPy/Ti could well act as the electroactive supercapacitor electrode for feasible energy storage.

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“…Electrochemical testing systems are also widely adopted for the sensitive testing of various molecules according to the response current density. Welldesigned carbon nanofiber/conductive polymers have become feasible electrode materials in terms of achieving these functions [22]. The surface oxygen functional groups play an important role in the electrochemical properties of carbon nanofibers [23,24].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Investigations of Oxygen Activation Effect of Carbon Nanofibers Interacting with Polypyrrole

Xie,

Wang,

Wang

et al. 2023

Fibers

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Theoretical modeling calculations and experimental measurements were adopted to investigate the oxygen activation effect of carbon nanofibers (CNFs) interacting with polypyrrole (PPY). The CNF undergoes a hydrothermal oxidation process to form epoxy and hydroxyl groups containing carbon nanofibers (CNF-O). The oxygen activation effect of CNF on the electronic and electrochemical properties was investigated through the interfacial interaction between CNF-O and PPY. Theoretical modeling calculation discloses that CNF-O/PPY exhibits lower electronic bandgaps (0.64 eV), a higher density of states (10.039 states/eV), and a lower HOMO–LUMO molecular orbital energy gap (0.077 eV) than CNF/PPY (1.56 eV, 7.946 states/eV and 0.112 eV), presenting its superior electronic conductivity and electroactivity. The Mulliken population and charge density difference analysis disclose the stronger interface interaction of CNF-O/PPY caused by epoxy and hydroxyl groups. Cyclic voltammogram measurements reveal that CNF-O/PPY exhibits a higher response current and a higher specific capacitance (221.1–112.2 mF g−1) than CNF/PPY (57.6–24.2 mF g−1) at scan rates of 5–200 mV s−1. Electrochemical impendence spectrum measurements disclose that CNF-O/PPY exhibits a lower charge transfer resistance (0.097 Ω), a lower ohmic resistance (0.336 Ω), a lower Warburg impedance (317 Ω), and a higher double-layer capacitance (0.113 mF) than CNF/PPY (1.419 Ω, 9.668 Ω, 7865 Ω, and 0.015 mF). Both theoretical and experimental investigations prove that CNF-O/PPY presents an intensified intermolecular interaction rather than CNF/PPY. The promotive oxygen activation effect of CNF could contribute to improving the electronic and electrochemical properties of CNF-O/PPY.

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Electrochemical performance of bridge molecule-reinforced activated carbon fiber-m-aminobenzenesulfonic acid-polyaniline for braidable-supercapacitor application

Cited by 10 publications

References 52 publications

Interfacial interaction-induced super-wettability of gallium-based liquid metals: a review

Interfacial interaction-induced super-wettability of gallium-based liquid metals: a review

Electrochemical Investigation of Lithium Perchlorate-Doped Polypyrrole Growing on Titanium Substrate

Theoretical and Experimental Investigations of Oxygen Activation Effect of Carbon Nanofibers Interacting with Polypyrrole

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