A wire-shaped flexible asymmetric supercapacitor based on carbon fiber coated with a metal oxide and a polymer

Liu, Weijie; Liu, Nishuang; Shi, Yuling; Chen, Ying; Yang, Chunliang; Tao, Jiayou; Wang, Siliang; Wang, Yumei; Su, Jun; Li, Luying; Gao, Yihua

doi:10.1039/c5ta01105a

Cited by 148 publications

(59 citation statements)

References 48 publications

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“…[34,35] Here, we developed aN iCo 2 O 4 @PPy hybrid structure on Ti wire as negative electrode to be coupled with the high performance NiCo 2 Se 4 electrode. [34,35] Here, we developed aN iCo 2 O 4 @PPy hybrid structure on Ti wire as negative electrode to be coupled with the high performance NiCo 2 Se 4 electrode.…”

Section: Resultsmentioning

confidence: 69%

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Flexible Asymmetric Threadlike Supercapacitors Based on NiCo₂Se₄ Nanosheet and NiCo₂O₄/Polypyrrole Electrodes

Wang

et al. 2017

ChemSusChem

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Flexible threadlike supercapacitors with improved performance are needed for many wearable electronics applications. Here, we report a high performance flexible asymmetric all-solid-state threadlike supercapacitor with a NiCo Se positive electrode and a NiCo O @PPy (PPy: polypyrrole) negative electrode. The as-prepared electrodes display outstanding volume specific capacitance (14.2 F cm ) and excellent cycling performance (94 % retention after 5000 cycles at 0.6 mA) owing to their nanosheet and nanosphere structures. The asymmetric all-solid-state threadlike supercapacitor expanded the stability voltage window from 0-1.0 V to 0-1.7 V and exhibits high volume energy density (5.18 mWh cm ) and superior flexibility under different bending conditions. This study provides a scalable method for fabricating high performance flexible supercapacitors from easily available materials for use in wearable and portable electronics.

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Section: Resultsmentioning

confidence: 69%

“…PPy has emerged as ap romising materialf or application in electrochemical SCs. [34,35] Here, we developed aN iCo 2 O 4 @PPy hybrid structure on Ti wire as negative electrode to be coupled with the high performance NiCo 2 Se 4 electrode. First, the effect of deposition times on the morphology was investigated to optimize the PPy layers.…”

Section: Resultsmentioning

confidence: 99%

Flexible Asymmetric Threadlike Supercapacitors Based on NiCo₂Se₄ Nanosheet and NiCo₂O₄/Polypyrrole Electrodes

Wang

et al. 2017

ChemSusChem

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“…This performance is comparable or better than that of some other wire‐shaped SCs, such as ZnO nanofibers/MnO 2 (0.027 µWh cm –2 , 14 µW cm –2 ), carbon fiber/Pen ink (0.38 µWh cm –2 , 0.034 µW cm –2 ), CNT fiber/MnO 2 //CNT film(1.14 µWh cm –2 , 1500 µW cm –2 ), CNT fiber/ordered mesoporous carbon (1.77 µWh cm –2 , 43 µW cm –2 ), RGO/carboxymethyl cellulose fiber (3.84 µWh cm –2 , 20 µW cm –2 ) . The energy density of PDWSs may be improved by coating MnO 2 with a synergistic material such as conducting polymer, or assembly asymmetric SCs with anode materials . The cycle life was measured with galvanostatic charge/discharge method at a current density of 0.3 mA cm –2 (Figure d).…”

Section: Resultsmentioning

confidence: 68%

Flexible Wire-Shaped Supercapacitors in Parallel Double Helix Configuration with Stable Electrochemical Properties under Static/Dynamic Bending

Guo

et al. 2016

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Wire-shaped flexible supercapacitors (SCs) have aroused much attention due to their small size, light weight, high flexibility, and deformability. However, the previously reported wire-shaped SCs usually involve complex assembly processes, encounter potential structural instabilities, and the influence of dynamic bending on the electrochemical stability of wire-shaped SCs is also not clear. Here, a parallel double helix wire-shaped supercapacitor (PDWS) protocol has been developed with two symmetric titanium@MnO2 fiber electrodes winded on a flexible nylon fiber by a simple and reliable process. The PDWSs show an operate voltage of 0.8 V, a high capacitance of 15.6 mF cm(-2) and an energy density of 1.4 µWh cm(-2) . Due to rational structure design, the PDWSs demonstrate excellent mechanical and electrochemical stability under both static and dynamic deformations. Over 3500 bending cycles, 88.0% of the initial capacitance can still be retained. In terms of dynamic bending, it is found that the cyclic voltammetry curves show periodically fluctuations simultaneously with the bending frequency and the intensity of fluctuation increases with higher bending frequency, while the dynamic capacitance is almost not affected. With extraordinary mechanical flexibility and excellent electrochemical stability, the high performance PDWS is considered to be a promising power source for wearable electronics.

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“…[18][19][20] Indeed, it remains rare for MOs to serve as both the cathode and anode of ACSs. MOs with low work function( or electrochemical potential), such as SnO 2 ,M nO 2 ,a nd ZrO 2 ,a re appropriate for the cathode, [21,22] whereasM Os with high work function, such as MoO 3 ,V 2 O 5 , and WO 3 ,a re advantageous for the anode. [23,24] The work functions of MOs are directly related to their electrochemical redox potentials.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric All‐Metal‐Oxide Supercapacitor with Superb Cycle Performance

Yang

Sun

2018

Chemistry A European J

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Metal oxides have great potential for developing high-performance supercapacitors due to their high specific capacitances. However, achieving high energy densities while maintaining good rate capability and long cycle life has proved to be challenging. We propose herein a strategy for constructing all-metal-oxide asymmetric supercapacitors (ASCs), in which both the cathode and anode are based on metal oxides, and demonstrate their outstanding electrochemical performance. We anchored SnO nanoparticles on the surface of reduced graphene oxide (RGO) through Sn-O-C bonds (as the cathode of ACSs), and employed low-crystalline RGO/MoO nanosheets as the anode, based on the large work function difference between SnO and MoO . The resulting ASC can operate stably at 1.8 V in neutral aqueous electrolyte and deliver an energy density of up to 33 W h kg , which remains at 13.8 W h kg even at 37.5 kW kg . Moreover, the ASC exhibits a good cycling stability of 92.5 % capacitance retention after 20 000 cycles.

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A wire-shaped flexible asymmetric supercapacitor based on carbon fiber coated with a metal oxide and a polymer

Abstract: A flexible wire-shaped fiber asymmetric supercapacitor shows perfect bending properties, high performance and good cycling stability.

Cited by 148 publications

References 48 publications

Flexible Asymmetric Threadlike Supercapacitors Based on NiCo₂Se₄ Nanosheet and NiCo₂O₄/Polypyrrole Electrodes

Flexible Asymmetric Threadlike Supercapacitors Based on NiCo₂Se₄ Nanosheet and NiCo₂O₄/Polypyrrole Electrodes

Flexible Wire-Shaped Supercapacitors in Parallel Double Helix Configuration with Stable Electrochemical Properties under Static/Dynamic Bending

Asymmetric All‐Metal‐Oxide Supercapacitor with Superb Cycle Performance

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A wire-shaped flexible asymmetric supercapacitor based on carbon fiber coated with a metal oxide and a polymer

Abstract: A flexible wire-shaped fiber asymmetric supercapacitor shows perfect bending properties, high performance and good cycling stability.

Cited by 148 publications

References 48 publications

Flexible Asymmetric Threadlike Supercapacitors Based on NiCo2Se4 Nanosheet and NiCo2O4/Polypyrrole Electrodes

Flexible Asymmetric Threadlike Supercapacitors Based on NiCo2Se4 Nanosheet and NiCo2O4/Polypyrrole Electrodes

Flexible Wire-Shaped Supercapacitors in Parallel Double Helix Configuration with Stable Electrochemical Properties under Static/Dynamic Bending

Asymmetric All‐Metal‐Oxide Supercapacitor with Superb Cycle Performance

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Flexible Asymmetric Threadlike Supercapacitors Based on NiCo₂Se₄ Nanosheet and NiCo₂O₄/Polypyrrole Electrodes

Flexible Asymmetric Threadlike Supercapacitors Based on NiCo₂Se₄ Nanosheet and NiCo₂O₄/Polypyrrole Electrodes