Aqueous supercapacitors based on carbonized silk electrodes

Zhang, Limei; Meng, Zhaohui; Qi, Qiaoyun; Yan, Wen; Lin, Naibo; Liu, Xiang Yang

doi:10.1039/c8ra01988f

Cited by 21 publications

(10 citation statements)

References 67 publications

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“…Even at a high power density of 25009 W kg –1 , the energy density of C-SPIO@4 still reached 31.7 Wh kg –1 . Such results are much better than those of carbonized SF-based, N-doped nanoporous carbon originating from organic compounds and IO-based nanoporous carbon for SC electrodes. ,− Comparisons of the electrochemical performances of C-SPIO@4 with those reported in the literature are listed in Table S2. It is understood that the capacitances of these heteroatom-doped carbon materials showed high energy densities at small current densities but declined significantly at higher current densities.…”

Section: Resultsmentioning

confidence: 97%

A Strategy to Synthesize Ultrahigh-N-Doped Hierarchical Carbons via Induced β-Sheet from Silk Fibroin by In Situ Electrogelation/Electropolymerization

Liu

Hung

et al. 2020

ACS Appl. Energy Mater.

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Silk fibroin (SF) is recognized for its rich nitrogen content and has been explored for its promising potential in energy storage because of its hexagonal pseudographitic structure from the direct transformation of the unique secondary protein β-sheet peptides of carbonized SF. In this work, we proposed a novel strategy that combined with in situ electrophoresis and electrogelation of SF as well as the electropolymerization of 3,4-ethylenedioxythiophene (EDOT) for producing high-level nitrogen-doped (N-doped) carbons. A high β-sheet content of SF can be synthesized in a three-dimensional (3D) inverse opaline skeleton via double-network microstructure (physical β-sheet cross-linking and chemical PEDOT cross-linking) induced by the hydrophobic EDOTs. This synergistic effect regulating SF distribution and balancing the intra/ intermolecular hydrogen bonding among SF results in boosting β-sheet contents. Herein, this 3D SF/PEDOT composite inverse opal (SPIO) exhibits a much ultrahigh-concentrated β-sheets (46.4%) compared to pure electrogelated SFIO with 16.4% of β-sheets. After subsequent pyrolysis, a high-level (14.7%) N-doped pseudographitic carbon inverse opal is realized. For evaluation as a pseudocapacitor, this high-level N-doped pseudographitic carbon inverse opal shows a capacitance of 342 F g −1 at 0.5 A g −1 and a commendable energy density of 31.7 Wh kg −1 at an ultrahigh power density of 25009 W kg −1 (at 50 A g −1 ). After galvanostatic charging/discharging at 15 A g −1 for 10000 cycles, the sample maintains an impressive capacitance retention of 89.8%.

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Section: Resultsmentioning

confidence: 97%

A Strategy to Synthesize Ultrahigh-N-Doped Hierarchical Carbons via Induced β-Sheet from Silk Fibroin by In Situ Electrogelation/Electropolymerization

Liu

Hung

et al. 2020

ACS Appl. Energy Mater.

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“…Furthermore, rGO@Hh and Ni (OH) 2 /rGO@Hh fibers were used as negative and positive electrodes in a solid-state fiber-based asymmetric supercapacitor (FASC), which showed high energy of 27.6 Wh/kg and a power density of 699 W/kg, respectively. In addition, Zhang et al [ 56 ] reported on simultaneous ZnCl 2 activation and FeCl 3 graphitization at varied heating temperatures. This yielded graphitic nitrogen-doped hierarchical porous carbon nanosheets and was employed for supercapacitor application from a readily produced green silk, as shown in Figure 8 e. The degree of graphitization and BET surface area increased to their greatest values when the heating temperature was increased from 700 °C to 850 °C, while the nitrogen doping concentration was kept at 2.24 wt%.…”

Section: Recent Advancements In Biopolymers-derived Materials For Sup...mentioning

confidence: 99%

“…( e ) Silk synthesis method. Adapted from reference [ 56 ]. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY 3.0) license.…”

Section: Figurementioning

confidence: 99%

Biopolymers-Derived Materials for Supercapacitors: Recent Trends, Challenges, and Future Prospects

et al. 2022

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Supercapacitors may be able to store more energy while maintaining fast charging times; however, they need low-cost and sophisticated electrode materials. Developing innovative and effective carbon-based electrode materials from naturally occurring chemical components is thus critical for supercapacitor development. In this context, biopolymer-derived porous carbon electrode materials for energy storage applications have gained considerable momentum due to their wide accessibility, high porosity, cost-effectiveness, low weight, biodegradability, and environmental friendliness. Moreover, the carbon structures derived from biopolymeric materials possess unique compositional, morphological, and electrochemical properties. This review aims to emphasize (i) the comprehensive concepts of biopolymers and supercapacitors to approach smart carbon-based materials for supercapacitors, (ii) synthesis strategies for biopolymer derived nanostructured carbons, (iii) recent advancements in biopolymer derived nanostructured carbons for supercapacitors, and (iv) challenges and future prospects from the viewpoint of green chemistry-based energy storage. This study is likely to be useful to the scientific community interested in the design of low-cost, efficient, and green electrode materials for supercapacitors as well as various types of electrocatalysis for energy production.

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“…2g) found for SA-1500 at $2700 cm −1 indicates the formation of graphene-like nanostructures. 39 In order to further identify the elemental composition of the SA, XPS patterns are shown in Fig. S6 † and Fig.…”

Section: Fabrication and Characterization Of Silk Derived Carbon Bre...mentioning

confidence: 99%

Ultralight biomass-derived carbon fibre aerogels for electromagnetic and acoustic noise mitigation

et al. 2022

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Aqueous supercapacitors based on carbonized silk electrodes

Cited by 21 publications

References 67 publications

A Strategy to Synthesize Ultrahigh-N-Doped Hierarchical Carbons via Induced β-Sheet from Silk Fibroin by In Situ Electrogelation/Electropolymerization

A Strategy to Synthesize Ultrahigh-N-Doped Hierarchical Carbons via Induced β-Sheet from Silk Fibroin by In Situ Electrogelation/Electropolymerization

Biopolymers-Derived Materials for Supercapacitors: Recent Trends, Challenges, and Future Prospects

Ultralight biomass-derived carbon fibre aerogels for electromagnetic and acoustic noise mitigation

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