Flexible, Swiss roll, fiber-shaped, asymmetric supercapacitor using MnO2 and Fe2O3 on carbon fibers

Cho, Sungdong; Patil, Bebi; Yu, Seongil; Ahn, Suhyun; Hwang, Jeonguk; Park, Changyong; Do, Kwanghyun; Ahn, Hye Shin

doi:10.1016/j.electacta.2018.03.020

Cited by 59 publications

(22 citation statements)

References 43 publications

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“…Similar behavior was observed in the EDLC-pseudocapacitive composite material-based cell ( Fig. 3c, d) [74,75]. In supercapattery, a clear redox peak is observed in the CV and a nonlinear GCD curves with voltage plateau, which indicates the reversible Faradaic reaction during the electrochemical reaction.…”

Section: Supercapatterysupporting

confidence: 79%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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HIGHLIGHTS• This article reviewed the recent progress on material challenges, charge storage mechanism, and electrochemical performance evaluation of supercapatteries.• Supercapatteries bridge the gap between supercapacitors (low energy density) and batteries (low power density). Fig. 1 a Ragone plot of various electrochemical energy conversion and storage devices [43]. b Schematic illustration of charge storage mechanism of EDL capacitor in porous carbon electrode. c Representation of EDLC structures: Helmholtz model, Gouy-Chapman model and Gouy-Chapman-Stern model. Schematic representation of the charge storage mechanisms in pseudocapacitor; d Intercalation (bulk redox) and e surface redox Nano-Micro Lett.(2020) 12:85Page 5 of 46 85 Table 1 Classification of various energy storage devices according to their charge storage mechanisms NFCS non-Faradaic capacitive storage = EDLC storage, CFS capacitive Faradaic storage = pseudocapacitive storage, NCFS non-capacitive Faradaic storage = battery-type storage Device Supercapattery Battery Supercapacitor Hybrid supercapacitor EDLC Pseudocapacitors

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Section: Supercapatterysupporting

confidence: 79%

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

et al. 2020

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“…Among the various energy storage devices, supercapacitors are drawn the great attention due to its high power density, rapid charge and discharge, and good cycle stability [1][2][3][4][5][6][7][8]. And it has been successfully applied in electronic products, flexible and wearable electronic devices, and hybrid electric vehicles [9,10].…”

Section: Introductionmentioning

confidence: 99%

Supercapacitors based on free-standing reduced graphene oxides/carbon nanotubes hybrid films

et al. 2018

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The freestanding of reduced graphene oxides/carbon nanotubes (rGO/CNTs) hybrid films are synthesized via the simple vacuum filtration and thermal reduction methods. And the electrochemical behaviors of rGO/CNTs hybrid films are investigated in KOH and in Et 4 NBF 4 /AN electrolyte, respectively. In three-electrode systems, the rGO/CNTs hybrid films show a maximum specific capacitance of 221 F g −1 , a 71% capacitance retention, and an excellent cycle life in 1 M KOH electrolyte. And the electrochemical behaviors of rGO/CNTs films in Et 4 NBF 4 /AN electrolyte under three-electrode systems show a maximum specific capacitance of 174 F g −1 and good rate capability. Moreover, a symmetric supercapacitor of rGO/ CNTs//rGO/CNTs demonstrates a maximum specific capacitance of 24 F g −1 at 1 A g −1 , a energy density of 20.8 Wh kg −1 at 1.27 kW kg −1 , and an excellent cycle life of 86.1% retention after 5000 cycles. It suggests that the symmetric supercapacitor could be regarded as an ideal energy storage system.

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“…Figure 5a indicates the CV profiles of ASC at various sweeping rates (5-100 mV·s −1 ) at potential window from 0 to 1.6 V. The ASC possesses a specific capacitance of 113.48 F·g −1 at 5 mV·s −1 and the rectangularity of CV curves is slightly distorted due to the combination of double-layer capacitance of rGO and pseudocapacitance of PEDOT. The specific capacitance obtained from PVA/PEDOT nanofibers//rGO is higher than those of ASC-carbon fiber composites [36,37]. Figure 5b shows that the capacitance decreased gradually when the scan rates increased due to the reduced accessibility of electrolyte ions to fully diffused the interior surface of electrodes during the redox process [10].…”

Section: Electrochemical Characterizationsmentioning

confidence: 96%

Facile Electrodeposition of Poly(3,4-ethylenedioxythiophene) on Poly(vinyl alcohol) Nanofibers as the Positive Electrode for High-Performance Asymmetric Supercapacitor

2019

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Poly(vinyl alcohol)/poly(3,4-ethylenedioxythiophene) (PVA/PEDOT) nanofibers were synthesized as a positive electrode for high-performance asymmetric supercapacitor (ASC). PVA/PEDOT nanofibers were prepared through electrospinning and electrodeposition meanwhile reduced graphene oxide (rGO) was obtained by electrochemical reduction. The PVA/PEDOT nanofibers demonstrated cauliflower-like morphology showing that PEDOT was uniformly coated on the smooth cross-linking structure of PVA nanofibers. In addition, the ASC showed a remarkable energy output efficiency by delivering specific energy of 21.45 Wh·kg−1 at a specific power of 335.50 W·kg−1 with good cyclability performance (83% capacitance retained) after 5000 CV cycles. The outstanding supercapacitive performance is contributed from the synergistic effects of both PVA/PEDOT//rGO, which gives promising materials for designing high-performance supercapacitor applications.

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Flexible, Swiss roll, fiber-shaped, asymmetric supercapacitor using MnO2 and Fe2O3 on carbon fibers

Cited by 59 publications

References 43 publications

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

Supercapacitors based on free-standing reduced graphene oxides/carbon nanotubes hybrid films

Facile Electrodeposition of Poly(3,4-ethylenedioxythiophene) on Poly(vinyl alcohol) Nanofibers as the Positive Electrode for High-Performance Asymmetric Supercapacitor

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