Nitrogen-doped hierarchical porous CNF derived from fibrous structured hollow ZIF-8 for a high-performance supercapacitor electrode

Nie, Hongjiao; Mi, Kan; Song, Lanlan; Zheng, Xiuwen

doi:10.1039/c9ra07846k

Cited by 13 publications

(3 citation statements)

References 26 publications

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“…The specific capacitances were found to be 74.8, 162.3, and 94 F/g at 1 A/g for pure CNF, CNF/Gd 2 O 3 ‐1, and CNF/Gd 2 O 3 ‐2 SSCs, respectively. The capacitance retention of CNF/Gd 2 O 3 ‐1 (%65.6) exceeded that reported in some studies in the literature, even surpassing certain nano‐sized metal oxide doped or heteroatom doped CNFs [44–46] . To assess the ion and electron transfer kinetics of the as‐synthesized materials, an electrochemical impedance spectroscopy (EIS) test was conducted.…”

Section: Resultsmentioning

confidence: 90%

“…The capacitance retention of CNF/ Gd 2 O 3 -1 (%65.6) exceeded that reported in some studies in the literature, even surpassing certain nano-sized metal oxide doped or heteroatom doped CNFs. [44][45][46] To assess the ion and electron transfer kinetics of the as-synthesized materials, an electrochemical impedance spectroscopy (EIS) test was conducted. Figure 8d displays the Nyquist plots of all SSCs and an equivalent circuit model fitted with the data is shown inset of Figure 8d.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

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Incorporating Gadolinium Oxide (Gd₂O₃) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application

Aydın,

Üstün,

Kurtan

et al. 2024

ChemElectroChem

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In this study, we synthesized gadolinium oxide nanoparticles (Gd2O3 NPs) incorporated heteroatom‐doped microporous carbon nanofibers (CNF) to serve as electrode materials for enhancing supercapacitive energy storage. Our primary focus is on elucidating the impact of these hybrid electrode materials on key supercapacitor performance properties such as specific capacitance, specific energy, and specific power. To comprehensively assess the structural and chemical attributes of Gd2O3 NPs‐incorporated heteroatom‐doped microporous CNFs (CNF/Gd2O3) we employed an array of advanced characterization techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy (RAMAN), X‐ray diffraction (XRD), and X‐ray photoelectron spectroscopy (XPS). Our research has yielded impressive results, demonstrating a significant increase in supercapacitive performance. Specifically, the CNF/Gd2O3‐1 symmetric supercapacitor cell (SSC) has demonstrated a good specific capacitance of 162.3 F/g and a high specific energy of 8.12 Wh/kg at a specific power of 300 W/kg. These findings could be a new pathway to prepare composite electrodes for use in energy storage applications and promote further development for other rare‐earth nanostructures.

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Section: Resultsmentioning

confidence: 90%

Section: Electrochemical Characterizationmentioning

confidence: 99%

Incorporating Gadolinium Oxide (Gd₂O₃) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application

Aydın,

Üstün,

Kurtan

et al. 2024

ChemElectroChem

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“…The results confirmed that the CNF/Fe 2 O 3 /PPy-based electrode exhibited excellent electrochemical performance and high-rate capabilities. In addition, the capacitive performances of the CNF/SnO 2 /PPy- and CNF/Fe 2 O 3 /PPy-based electrodes were compared with previously reported CNF-derived supercapacitor electrode materials including 3D structure in a three-electrode system, as shown in Table S2 [ 81 , 82 , 83 , 84 , 85 ]. Compared with previously reported materials, the CNF/SnO 2 /PPy- and CNF/Fe 2 O 3 /PPy-based electrodes showed better specific capacitances, signifying the successful preparation of 3D hierarchically structured materials.…”

Section: Resultsmentioning

confidence: 99%

3D Hierarchically Structured Tin Oxide and Iron Oxide-Embedded Carbon Nanofiber with Outermost Polypyrrole Layer for High-Performance Asymmetric Supercapacitor

et al. 2023

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Herein, unique three-dimensional (3D) hierarchically structured carbon nanofiber (CNF)/metal oxide/conducting polymer composite materials were successfully synthesized by combinations of various experimental methods. Firstly, base CNFs were synthesized by carbonization of electrospun PAN/PVP fibers to attain electric double-layer capacitor (EDLC) characteristics. To further enhance the capacitance, tin oxide (SnO2) and iron oxide (Fe2O3) were coated onto the CNFs via facile hydrothermal treatment. Finally, polypyrrole (PPy) was introduced as the outermost layer by a dispersion polymerization method under static condition to obtain 3D-structured CNF/SnO2/PPy and CNF/Fe2O3/PPy materials. With each synthesis step, the morphology and dimension of materials were transformed, which also added the benign characteristic for supercapacitor application. For the practical application, as-synthesized CNF/SnO2/PPy and CNF/Fe2O3/PPy were applied as active materials for supercapacitor electrodes, and superb specific capacitances of 508.1 and 426.8 F g−1 (at 1 A g−1) were obtained (three-electrode system). Furthermore, an asymmetric supercapacitor (ASC) device was assembled using CNF/SnO2/PPy as the positive electrode and CNF/Fe2O3/PPy as the negative electrode. The resulting CNF/SnO2/PPy//CNF/Fe2O3/PPy device exhibited excellent specific capacitance of 101.2 F g−1 (at 1 A g−1). Notably, the ASC device displayed a long-term cyclability (at 2000 cycles) with a retention rate of 81.1%, compared to a CNF/SnO2//CNF/Fe2O3 device of 70.3% without an outermost PPy layer. By introducing the outermost PPy layer, metal oxide detachment from CNFs were prevented to facilitate long-term cyclability of electrodes. Accordingly, this study provides an effective method for manufacturing a high-performance and stable supercapacitor by utilizing unique 3D hierarchical materials, comprised of CNF, metal oxide, and conducting polymer.

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Comprehensive Review on Silicon-enhanced Green Nanocomposites Towards Sustainable Development

Jatoi

Ahmed

Muhammad

et al. 2021

Silicon

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Nitrogen-doped hierarchical porous CNF derived from fibrous structured hollow ZIF-8 for a high-performance supercapacitor electrode

Abstract: Hollow ZIF-8 shells were assembled into fibers to obtain nitrogen-doped hierarchical porous carbon nanofibers for excellent supercapacitor application.

Cited by 13 publications

References 26 publications

Incorporating Gadolinium Oxide (Gd₂O₃) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application

Incorporating Gadolinium Oxide (Gd₂O₃) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application

3D Hierarchically Structured Tin Oxide and Iron Oxide-Embedded Carbon Nanofiber with Outermost Polypyrrole Layer for High-Performance Asymmetric Supercapacitor

Comprehensive Review on Silicon-enhanced Green Nanocomposites Towards Sustainable Development

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Nitrogen-doped hierarchical porous CNF derived from fibrous structured hollow ZIF-8 for a high-performance supercapacitor electrode

Abstract: Hollow ZIF-8 shells were assembled into fibers to obtain nitrogen-doped hierarchical porous carbon nanofibers for excellent supercapacitor application.

Cited by 13 publications

References 26 publications

Incorporating Gadolinium Oxide (Gd2O3) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application

Incorporating Gadolinium Oxide (Gd2O3) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application

3D Hierarchically Structured Tin Oxide and Iron Oxide-Embedded Carbon Nanofiber with Outermost Polypyrrole Layer for High-Performance Asymmetric Supercapacitor

Comprehensive Review on Silicon-enhanced Green Nanocomposites Towards Sustainable Development

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Resources

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Incorporating Gadolinium Oxide (Gd₂O₃) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application

Incorporating Gadolinium Oxide (Gd₂O₃) as a Rare Earth Metal Oxide in Carbon Nanofiber Skeleton for Supercapacitor Application