Self-growing graphite felt/vanadium pentoxide/polyindole ternary composite as binder-free electrode for supercapacitor with 1.8 V operating potential window and excellent electrochemical performance

Zhang, Wenjing; You, Mingyu; Yan, Xuehua; Zhang, Mengyang; Huang, Xinpeng; Wu, Sutang; Shahnavaz, Zohreh; Pan, Jianmei; Li, Tie; Zuo, Zhihua

doi:10.1016/j.apsusc.2022.153780

Cited by 13 publications

(5 citation statements)

References 61 publications

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“…Considerable efforts have been devoted to boosting the electron diffusion rate of V 2 O 5 and further enhancing its capacitive performances . Previous reports , indicated that cationic doping has proved to be an effective method to increase the electrical conductivity by 1 or 2 orders of magnitude . Inspired by this benefit, several kinds of metal cations (Ga, W, Al, Cu, etc.…”

Section: Introductionmentioning

confidence: 99%

Boosting the Capacitor Performance of the Metal Organic Frameworks Derived V₂O₅ Nanoflower by Cu Doping

Wang,

Qian

et al. 2024

Langmuir

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Due to its ultrahigh theoretical capacitance, vanadium pentoxide (V 2 O 5 ) is considered to be a valid candidate for advanced supercapacitors. However, because of the low electron/electrolyte transfer rate, the capacitive performance still remains to be improved. In this report, Cu doping is adopted to improve the capacitive performance by a two-steps strategy consisting of microwave-assisted solvothermal and postannealing treatments. The electrochemical results indicate that the Cu doping was beneficial for improving the specific capacitance, extending the potential window, and improving the rate ability and long-term stability of V 2 O 5 . Furthermore, the mechanism for the performance improvement is explained in detail by combining theoretical calculation and experiments. The results indicated that, compared with that of undoped V 2 O 5 , the larger interplanar spacing, better electrical conductivity, a larger proportion of V 3+ /V 4+ , and more abundant oxygen vacancies result in an improved capacitive performance. Our proposed Cu-doped V 2 O 5 (Cu-V 2 O 5 ) can be used as both a positive electrode and a negative electrode for the assembly of the symmetric supercapacitor, which can be used as an energy storage device for light emitting diode lamps.

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Section: Introductionmentioning

confidence: 99%

Boosting the Capacitor Performance of the Metal Organic Frameworks Derived V₂O₅ Nanoflower by Cu Doping

Wang,

Qian

et al. 2024

Langmuir

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“…This performance distinctly surpassed that of its binary counterparts: graphite felt@vanadium oxide (GF@V 2 O 5 ) recorded a capacitance of 1431 mF cm −2 , while graphite felt@polyindole (GF@PIn) managed 647 mF cm −2 , thereby underscoring the enhanced electrochemical attributes of the ternary composite over binary ones. [19] However, managing and simultaneously optimizing for electrochemical efficiency in ternary electrodes made of nanocomposites [20] has inherent difficulties, with the fabrication of such multi-component hybrid electrode materials typically involving complex and time-consuming procedures. For instance, Xu et al fabricated graphene/polyaniline/MnO 2 ternary supercapacitor electrodes [21] using a sequential electrodeposition method that may be impractical for large-scale productions.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Ternary Pseudocapacitive Electrode with Synergistic Contributions

Zhou,

Tynan,

Dai

et al. 2024

Advanced Energy Materials

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Ternary electrodes represent an exciting strategy to substantially enhance the performance of supercapacitors beyond what binary electrodes offer. However, the interplays among ternary constituents and their possible synergies remain poorly understood. This study investigates a ternary electrode design, wherein ferric oxyhydroxide (FeOOH) and magnesium dioxide (MnO2) are co‐deposited onto carbon nanotube (CNT) mats. The results reveal that the ternary electrode demonstrates a 33.3% reduction in internal resistance and a 59% increase in areal capacitance compared to its binary MnO2/CNT counterpart. Furthermore, the ternary electrode achieves a 25% increase in capacitance compared to the combined capacitances of separate MnO2/CNT and FeOOH/CNT electrodes. These findings demonstrate that combining FeOOH and MnO2 can synergistically enhance electrical conductivity and pseudocapacitance beyond their binary counterparts. This design yields a surface capacitance exceeding 3500 mF cm−2 at an active material loading up to 15 mg cm−2. By pairing with a binary FeOOH/CNT electrode, the resulting asymmetric supercapacitor exhibits an operational voltage window to 1.6 V. To demonstrate the potential of the new design, ternary electrodes are integrated into wearable and structural supercapacitors. The new synergistic ternary electrode approach provides a promising avenue for enhancing energy storage capacitance and expanding the scope of energy storage structure applications.

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“…Vanadium pentoxide (V 2 O 5 ), as a layered transition metal oxide, possesses a unique valence electron structure and is rich in a variety of compound states (þ5, þ4, þ3, þ2), enabling it to exhibit a high specific capacitance and the potential to enhance the capacitance properties of WO 3 when combined. [47][48][49][50] In this study, we employed a simple hydrothermal-calcination method to incorporate a V 2 O 5 precursor solution into presynthesized WO 3 nanorods. By investigating the influence of the precursor (V 2 O 5 ) concentration on the morphology and performance of the composite, we identified the optimal concentration and successfully prepared a 3D network-like WO 3 /V 2 O 5 /CC composite material.…”

Section: Introductionmentioning

confidence: 99%

“…Vanadium pentoxide (V 2 O 5 ), as a layered transition metal oxide, possesses a unique valence electron structure and is rich in a variety of compound states (+5, +4, +3, +2), enabling it to exhibit a high specific capacitance and the potential to enhance the capacitance properties of WO 3 when combined. [ 47–50 ]…”

Section: Introductionmentioning

confidence: 99%

WO₃–V₂O₅–Carbon Fiber Self‐Supported Composite Electrodes for High‐Performance Supercapacitors

Hu,

Liu,

Wang

et al. 2023

Energy Tech

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The design of high‐energy‐density device electrodes has garnered significant attention but remains a challenging task. This study proposes an effective strategy for constructing a ternary composite material (WO3/V2O5/CC‐n, n = 1, 2, 3). Utilizing V2O5 as a precursor, a highly efficient electrode (WO3/V2O5/CC‐2) with a 3D nanowire structure is designed. The results demonstrate that the WO3/V2O5/CC‐2 electrode exhibits enhanced capacitive performance with a specific capacity (495.6 F g−1 at 1 A g−1) and remarkable electrochemical stability even after 5000 cycles. Furthermore, kinetics analysis reveals that the charge stored on the electrode is primarily attributed to surface capacitive effects and diffusion‐controlled insertion processes. This facile preparation method of the WO3/V2O5/CC‐2 electrode derived from WO3 and V2O5 holds excellent potential for constructing new‐generation electrochemical energy‐storage devices with superb capacitance performance.

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Self-growing graphite felt/vanadium pentoxide/polyindole ternary composite as binder-free electrode for supercapacitor with 1.8 V operating potential window and excellent electrochemical performance

Cited by 13 publications

References 61 publications

Boosting the Capacitor Performance of the Metal Organic Frameworks Derived V₂O₅ Nanoflower by Cu Doping

Boosting the Capacitor Performance of the Metal Organic Frameworks Derived V₂O₅ Nanoflower by Cu Doping

A Novel Ternary Pseudocapacitive Electrode with Synergistic Contributions

WO₃–V₂O₅–Carbon Fiber Self‐Supported Composite Electrodes for High‐Performance Supercapacitors

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Self-growing graphite felt/vanadium pentoxide/polyindole ternary composite as binder-free electrode for supercapacitor with 1.8 V operating potential window and excellent electrochemical performance

Cited by 13 publications

References 61 publications

Boosting the Capacitor Performance of the Metal Organic Frameworks Derived V2O5 Nanoflower by Cu Doping

Boosting the Capacitor Performance of the Metal Organic Frameworks Derived V2O5 Nanoflower by Cu Doping

A Novel Ternary Pseudocapacitive Electrode with Synergistic Contributions

WO3–V2O5–Carbon Fiber Self‐Supported Composite Electrodes for High‐Performance Supercapacitors

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Product

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Boosting the Capacitor Performance of the Metal Organic Frameworks Derived V₂O₅ Nanoflower by Cu Doping

Boosting the Capacitor Performance of the Metal Organic Frameworks Derived V₂O₅ Nanoflower by Cu Doping

WO₃–V₂O₅–Carbon Fiber Self‐Supported Composite Electrodes for High‐Performance Supercapacitors