Modified Carbon Fiber Paper-Based Electrodes Wrapped by Conducting Polymers with Enhanced Electrochemical Performance for Supercapacitors

Tan, Sicong; Li, Jiajia; Zhou, Lun; Chen, Peng; Shi, Jiangtao; Xu, Zhaoyang

doi:10.3390/polym10101072

Cited by 19 publications

(10 citation statements)

References 45 publications

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“…It is well known that the energy density of a supercapacitor is determined by the specific capacitance and squared operating voltage window [2,3]. To improve the energy density, tremendous efforts have been devoted to developing novel electrode materials to elevate the specific capacitance [4,5,6,7,8,9,10]. Apart from the electrodes, electrolyte is one of the key components of a supercapacitor, that can significantly affect the operating voltage as well as lifespan and safety of supercapacitors [11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Construction of Polymer Electrolyte Based on Soybean Protein Isolate and Hydroxyethyl Cellulose for a Flexible Solid-State Supercapacitor

Xun

Gao

et al. 2019

Polymers

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Supercapacitors are a very active research topic. However, liquid electrolytes present several drawbacks on security and packaging. Herein, a gel polymer electrolyte was prepared based on crosslinked renewable and environmentally friendly soybean protein isolate (SPI) and hydroxyethyl cellulose (HEC) with 1.0 mol L−1 Li2SO4. Highly hydrophilic SPI and HEC guaranteed a high ionic conductivity of 8.40 × 10−3 S cm−1. The fabricated solid-state supercapacitor with prepared gel polymer electrolyte exhibited a good electrochemical performance, that is, a high single electrode gravimetric capacitance of 91.79 F g−1 and an energy density of 7.17 W h kg−1 at a current density of 5.0 A g−1. The fabricated supercapacitor exhibited a flexible performance under bending condition superior to liquid supercapacitor and similar electrochemical performance at various bending angles. In addition, it was proved by an almost 100% cycling retention and a coulombic efficiency over 5000 charge–discharge cycles. For comparison, supercapacitors assembled with commercial aqueous PP/PE separator, pure SPI membrane, and crosslinked SPI membrane were also characterized. The obtained gel polymer electrolyte based on crosslinked SPI and HEC may be useful for the design of advanced polymer electrolytes for energy devices.

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Section: Introductionmentioning

confidence: 99%

Construction of Polymer Electrolyte Based on Soybean Protein Isolate and Hydroxyethyl Cellulose for a Flexible Solid-State Supercapacitor

Xun

Gao

et al. 2019

Polymers

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“…The line is close to 45°, which fits the standard of the mixed control between charge transfer and diffusion processes in electrochemical system. To sum up, G/GAs presents good electrochemical properties and stability and can be used as electrode materials for EDLCs [41,42].…”

Section: Resultsmentioning

confidence: 99%

Glucose/Graphene-Based Aerogels for Gas Adsorption and Electric Double Layer Capacitors

2018

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In this study, three-dimensional glucose/graphene-based aerogels (G/GAs) were synthesized using the hydrothermal reduction and CO2 activation method. Graphene oxide (GO) was used as a matrix, and glucose was used as a binder for the orientation of the GO morphology in an aqueous media. We determined that G/GAs exhibited narrow mesopore size distribution, a high surface area (763 m2 g−1), and hierarchical macroporous and mesoporous structures. These features contributed to G/GAs being promising adsorbents for the removal of CO2 (76.5 mg g−1 at 298 K), CH4 (16.8 mg g−1 at 298 K), and H2 (12.1 mg g−1 at 77 K). G/GAs presented excellent electrochemical performance, featuring a high specific capacitance of 305.5 F g−1 at 1 A g−1, and good cyclic stability of 98.5% retention after 10,000 consecutive charge-discharge cycles at 10 A g−1. This study provided an efficient approach for preparing graphene aerogels exhibiting hierarchical porosity for gas adsorption and supercapacitors.

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“…Carbon materials are electrically conductive, inexpensive, nontoxic, robust, scalable, and chemically inert. They can also possess high surface area, such as carbon fiber paper (CFP), making them desirable in many electrochemical, fuel cell, 1, 2 electrolyzer, 3,4 supercapacitor, [5][6][7][8][9][10] sensing, 11,12 water desalination 13 and wastewater treatment 14,15 applications. Another advantage is the excellent biocompatibility of CFP for in-vitro and in-vivo studies, 16 for biosensing applications, 17,18 tissue engineering, 19 and in regenerative medicine and cancer treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Reported chemical treatments required concentrated mineral acids and were tedious. 6,7,10,12,[34][35][36][37][38] They raised hydrophilicity, but materials were further functionalized immediately, indicating that hydrophilicity of carbon surfaces did not last. A hydrothermal process taking 12 hours was reported for CFP activation for further impregnation by salicylic acid.…”

mentioning

confidence: 99%

Selective hydroxylation of carbon surfaces for long-lasting hydrophilicity by a green chemistry process

Wilsey

Watson

Fasusi

et al. 2022

Preprint

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We report the selective hydroxylation of carbon surfaces that rendered initially hydrophobic carbon fiber paper hydrophilic for more than five months. This long time of sustained hydrophilicity is unprecedented. Carbon fiber paper is an inexpensive, electrically conductive, high surface area material that is additionally nontoxic, biocompatible, robust, and scalable. But its hydrophobicity prevents widespread use in aqueous applications. Inhibition of overoxidation of carbon beyond hydroxylation is especially challenging because the first oxidation step is thermodynamically most difficult and subsequent oxidations are much easier. We achieved selectivity for less oxidized hydroxyls over carboxyls by an environmentally friendly, solution-processable, acid-free carbon surface functionalization treatment that is rapid, amenable to large scale applications, and did not damage carbon fibers and their network architectures. The development of this mild, green chemistry carbon surface treatment that provides selectivity for surface hydroxyls transforms the utility of carbon materials.

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Modified Carbon Fiber Paper-Based Electrodes Wrapped by Conducting Polymers with Enhanced Electrochemical Performance for Supercapacitors

Cited by 19 publications

References 45 publications

Construction of Polymer Electrolyte Based on Soybean Protein Isolate and Hydroxyethyl Cellulose for a Flexible Solid-State Supercapacitor

Construction of Polymer Electrolyte Based on Soybean Protein Isolate and Hydroxyethyl Cellulose for a Flexible Solid-State Supercapacitor

Glucose/Graphene-Based Aerogels for Gas Adsorption and Electric Double Layer Capacitors

Selective hydroxylation of carbon surfaces for long-lasting hydrophilicity by a green chemistry process

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