Facile construction of 3D porous carbon nanotubes/polypyrrole and reduced graphene oxide on carbon nanotube fiber for high-performance asymmetric supercapacitors

Liu, Jia-hua; Xu, Xiaoying; Yu, Jiali; Hong, Jin; Liu, Chen; Ouyang, Xiaoying; Shuai, Lei; Meng, Xiao; Tang, Jiaoning; Chen, Dazhu

doi:10.1016/j.electacta.2019.05.059

Cited by 65 publications

(26 citation statements)

References 64 publications

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“…[ 89,90 ] After HI reduction, the G band of RGO shifts toward a lower wavenumber which suggests the occurrence of re‐graphitization, while the D band becomes more prominent due to an increase of defect level caused by the reduction reaction which is in agreement with previously reported results. [ 91,92 ] The intensity ratios of the D and G bands ( I D / I G ) calculated from the band intensity are 0.98 (GO) and 1.67 (RGO), respectively. The larger value of I D / I G for RGO demonstrates a higher degree of disorder, which may be ascribed to the removing of numerous OCGs and formation of massive structural defects during the reduction process, [ 92–94 ] implying that GO has been successfully reduced.…”

Section: Resultsmentioning

confidence: 99%

Core–Shell Structured Cellulose Nanofibers/Graphene@Polypyrrole Microfibers for All‐Solid‐State Wearable Supercapacitors with Enhanced Electrochemical Performance

Chen

2020

Macro Materials & Eng

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Thanks to their considerable electrochemical and mechanical properties, fiber‐shaped supercapacitors have become the most potential energy storage devices for portable and wearable electronics in the future; however, challenges still exist in the pursuit of practical applications among them. In this work, ternary microfibers, which are composed of TEMPO‐oxidized cellulose nanofibers/reduced graphene oxide microfiber cores coated with polypyrrole shell layers, are successfully fabricated through industrializable and sustainable wet‐spinning and interfacial polymerization strategies. The prepared microfibers possess well‐defined microstructures and outstanding mechanical properties (559 MPa). When assembled into symmetrical all‐solid‐state fiber‐shaped supercapacitors (FSCs), they exhibit remarkable electrochemical properties (647 mF cm−2, 14.37 µWh cm−2 at 0.1 mA cm−2), prominent cycling stability (92.5% capacitance retention and 92.6% coulomb efficiency after 10 000 cycles), and extraordinary flexibility (no significant decay in capacitance after 5000 bending cycles), which are superior to all the congeneric FSCs reported to date. The prominent performances are ascribed to the synergistic effect of the well‐designed ternary system and synergistic effects between interior components. The advantages in electrochemical, mechanical, and industrial properties of the ternary FSCs can provide reference and boost the development of flexible energy storage applications.

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Section: Resultsmentioning

confidence: 99%

Core–Shell Structured Cellulose Nanofibers/Graphene@Polypyrrole Microfibers for All‐Solid‐State Wearable Supercapacitors with Enhanced Electrochemical Performance

Chen

2020

Macro Materials & Eng

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“…[ 39,40 ] For the CV curve of the PPy@SSY electrode, the area in the positive potential range is bigger than that in the negative potential range, thus the PPy is often served as the positive electrode material for ASCs. [ 41,42 ] The PPy@Fe 2 O 3 @SSY electrode combined with the Fe 2 O 3 and PPy exhibits good capacitive behavior in the entire potential range, which is an ideal electrode for symmetric TSCs. The enclosed area of the CV curves follows the order of PPy@Fe 2 O 3 @SSY > PPy@SSY > Fe 2 O 3 @SSY, suggesting the specific capacitance of the three electrodes is in the above order.…”

Section: Resultsmentioning

confidence: 99%

Flexible Polypyrrole@Fe₂O₃@Stainless Steel Yarn Composite Electrode for Symmetric Thread‐Like Supercapacitor with Extended Operating Voltage Window in Li₂SO₄‐Based Aqueous Electrolyte

Zuo

Zang

Wang

et al. 2020

Advanced Sustainable Systems

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A flexible symmetric thread‐like supercapacitor (TSC) with high operating voltage window and good electrochemical performance is manufactured, that fulfills the requirements of wearable electronics. First, iron oxide (Fe2O3) nanosheets are directly grown in situ on the surface of stainless steel yarn (SSY) by an acid corrosion and self‐oxidation process, and then a polypyrrole (PPy) coating is covered on the surface of Fe2O3 nanosheets via chemical oxide method to obtain the thread‐like PPy@Fe2O3@SSY composite electrode. The electrode achieves a wide potential range of −1.0–0.8 V (versus Ag/AgCl) and a high areal specific capacitance of 667.8 mF cm−2 with outstanding galvanostatic charge/discharge cycling stability of 87.5% capacitance retention after 10 000 cycles in 1 m lithium sulfate (Li2SO4) aqueous solution. The symmetric TSC based on the PPy@Fe2O3@SSY electrode and carboxymethyl cellulose sodium salt/Li2SO4 gel electrolyte exhibits a wide operating voltage window of 1.8 V, and its maximum energy density can reach 39.3 μWh cm−2. Additionally, the TSC demonstrates excellent electrochemical performance under various bending states and a bending cycling test. The preparation method and raw materials are low‐cost and scalable, and the overall performance of the TSC is excellent, which makes this device a promising energy storage device for wearable electronics.

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“…As such, the areal and volumetric capacitance of NCPM/CNT-3 could reach 20 F cm −2 and 137 F cm −3 , respectively. These values are markedly superior to those from the state-of-the-art systems, including AC/CNT/rGO [ 12 ], commercial carbon black/carbon cloth (C-AC/CC) [ 12 ], MnO 2 @WC [ 34 ], 3D G/MnO 2 [ 33 ], carbon nanofiber/polypyrrole (CNF/PPy) [ 35 ], exfoliated carbon cloth/MnO 2 (ECC/MnO 2 ) [ 36 ], MXene-N [ 29 ], and Ni foam/MnO 2 [ 37 ] (Fig. 4 f).…”

Section: Printing Processmentioning

confidence: 99%

3D Printing of NiCoP/Ti3C2 MXene Architectures for Energy Storage Devices with High Areal and Volumetric Energy Density

Wei

et al. 2020

Nano-Micro Lett.

116

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Facile construction of 3D porous carbon nanotubes/polypyrrole and reduced graphene oxide on carbon nanotube fiber for high-performance asymmetric supercapacitors

Cited by 65 publications

References 64 publications

Core–Shell Structured Cellulose Nanofibers/Graphene@Polypyrrole Microfibers for All‐Solid‐State Wearable Supercapacitors with Enhanced Electrochemical Performance

Core–Shell Structured Cellulose Nanofibers/Graphene@Polypyrrole Microfibers for All‐Solid‐State Wearable Supercapacitors with Enhanced Electrochemical Performance

Flexible Polypyrrole@Fe₂O₃@Stainless Steel Yarn Composite Electrode for Symmetric Thread‐Like Supercapacitor with Extended Operating Voltage Window in Li₂SO₄‐Based Aqueous Electrolyte

3D Printing of NiCoP/Ti3C2 MXene Architectures for Energy Storage Devices with High Areal and Volumetric Energy Density

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Facile construction of 3D porous carbon nanotubes/polypyrrole and reduced graphene oxide on carbon nanotube fiber for high-performance asymmetric supercapacitors

Cited by 65 publications

References 64 publications

Core–Shell Structured Cellulose Nanofibers/Graphene@Polypyrrole Microfibers for All‐Solid‐State Wearable Supercapacitors with Enhanced Electrochemical Performance

Core–Shell Structured Cellulose Nanofibers/Graphene@Polypyrrole Microfibers for All‐Solid‐State Wearable Supercapacitors with Enhanced Electrochemical Performance

Flexible Polypyrrole@Fe2O3@Stainless Steel Yarn Composite Electrode for Symmetric Thread‐Like Supercapacitor with Extended Operating Voltage Window in Li2SO4‐Based Aqueous Electrolyte

3D Printing of NiCoP/Ti3C2 MXene Architectures for Energy Storage Devices with High Areal and Volumetric Energy Density

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Flexible Polypyrrole@Fe₂O₃@Stainless Steel Yarn Composite Electrode for Symmetric Thread‐Like Supercapacitor with Extended Operating Voltage Window in Li₂SO₄‐Based Aqueous Electrolyte