Then, the assembled carbon nanofiber networks-based Zn-ion capacitor delivers an ultrahigh energy density of 163 Wh kg −1 and a super-stable cycle lifespan with a 90.5% capacity retention after 400, 000 cycles at 20 A/g.
1. Introduction. Electrochemical capacitors have been attracting attention as a promising energy device that exhibits high power density and long life cycle stability, and also bridges the gap in the energy density of conventional capacitors and rechargeable lithium ion batteries [1], [2], [3].They can be categorized into electrical double layered …
Carbon nanomaterials gained considerable interest in developing efficient capacitive charge storage systems to build better supercapacitors, and realize energy-efficient capacitive deionization (CDI) water treatment apparatus. Graphene, carbon nanotubes, porous carbon nanofibers, and various nanoporous carbon architectures are …
In this work, large-area and uniform Na 3 (VO) 2 (PO 4) 2 F cuboid arrays are vertically grown on carbon nanofiber (CNF) substrates for the first time. Owing to faster electron/ion transport and larger electrolyte–electrode contact area, the as-prepared NVPF array electrode exhibits much improved Na-storage properties compared to its powder …
Electrochemical capacitors based on hierarchical porous activated carbon nanofiber (RuO2 /ACNF) composites are fabricated by one-step electrospinning, and then stabilized at different activation ...
In this work, phytic acid is used as the protonic acid dopant and soft template to synthesize 3D polyaniline (PANI) nanofiber networks. Then, the PANI nanofiber networks are transformed to porous nitrogen and phosphorus co-doped carbon nanofibers (P-NP-CNFs) by the carbonization and chemical activation proce
The electrochemical properties of the ACNFC electrodes were examined in two-electrode capacitors using a 1.5 M TEABF 4 solution in AN. All the CV curves in an organic electrolyte (Fig. 2 a) displayed a box-like shape that is typical of an ideal electrical double layer capacitor in 0–2.7 V.The induced current of the AT-V 2 O 5-5 electrode was …
The obtained experimental results show that the values of ε′, ε′, tanδ, M′, M″ and σac of the PrBaCoO nanofiber capacitor are strongly dependent on frequency of applied bias voltage.
The prepared PPy/graphene/carbon nanofiber electrodes had a capacitance of 386 F/g (2 mV/s, 0.5 M Na 2 SO 4) and retained 84% of original capacitance after 1000 charge/discharge cycles. The addition of graphene can improve the rate performance of electrodes as well, PPy/graphene/carbon nanofibers had the best …
The obtained experimental results show that the values of ε′, ε′, tanδ, M′, M″ and σac of the PrBaCoO nanofiber capacitor are strongly dependent on frequency and applied bias voltage ...
Herein, we report a two-step electrospinning and potentiostatic electrodeposition method to fabricate electrodes with graphene/polypyrrole-coated carbon nanofiber core–shell architecture for supercapacitor applications. The electrospun carbon nanofiber core acts as an electrically conductive substrate that enables
As a promising energy-storage device, the hybrid lithium-ion capacitor coupling with both a large energy density battery-type anode and a high power density capacitor-type cathode is attracting great attention. For the sake of improving the energy density of hybrid ...
The electrode material for the hybrid supercapacitor is classified into three categories. The first one is carbon material, which includes Carbon Nanotubes (CNTs), …
To prepare nanographene, we chose platelet-type carbon nanofiber (CNF), rather than conventional graphite powder, as the starting material. The CNF consisted of graphite platelets stacked in a direction perpendicular to the fiber axis [14], [15], [16].Therefore, its structure is more suitable for producing nanographene by exfoliation …
DOI: 10.1016/J.JELECHEM.2015.03.009 Corpus ID: 98315684; Surface modification of RuO2 nanoparticles–carbon nanofiber composites for electrochemical capacitors @article{An2015SurfaceMO, title={Surface modification of RuO2 nanoparticles–carbon nanofiber composites for electrochemical capacitors}, author={Geon‐Hyoung An and …
Here, we present the first electroadsorption effects of an amorphous cellulose nanofiber (ACF) supercapacitor, which can store a large amount of electricity …
Abstract: In this paper, we present carbon nanofiber (CNF)-based capacitors in a MIM configuration, a CNF-MIM, with a small footprint, low profile height, and high capacitance …
To prepare nanographene, we chose platelet-type carbon nanofiber (CNF), rather than conventional graphite powder, as the starting material. The CNF consisted of graphite platelets stacked in a direction perpendicular to the fiber axis [14], [15], [16].Therefore, its ...
A flexible capacitive sensor based on the electrospun PVDF nanofiber membrane with CNTs has been developed. • This innovative flexible sensor provides a high sensitivity (up to 0.99/kPa) and rapid dynamic responses (∼29 ms). • …
Carbon nanofiber (CNF) is one of the important carbon materials for supercapacitor applications due to the high surface area and good electrical conductivity. …
Designing well-orchestrated carbon nanostructure is critical for Zn-ion capacitors with superb capacitive activity and durability. Herein, a hydrogen-bond-mediated micelle aggregating self-assembly strategy is developed to design interweaved carbon nanofiber networks (TB-DA-80) for propelling Zn-ion storage capability. ...
The separator is an important component for energy storage devices. At present, the membranes for supercapacitors are rare, especially the ones that work with an alkaline electrolyte. Herein, a type of flexible and highly porous polymer hybrid nanofiber membrane was prepared via a facile electrospinning process and served as a separator …
Supercapacitors (SCs) are promising for bridging the power/energy gap between conventional capacitors and batteries/fuel cells. However, challenges remain in the improvement of electrode materials toward high capacitive performance. Electrospun nanofibers, prepared via facile and low-cost electrospinning tec
Carbon nanofiber (CNF) was widely utilized in the field of electrochemical energy storage due to its superiority of conductivity and mechanics. However, CNF was generally prepared at relatively high temperature. ... The constructed sodium-ion capacitor with activated carbon cathode and presodiated NHCNF-600 anode can present an …
The obtained experimental results show that the values of ε′, ε′, tanδ, M′, M″ and σac of the PrBaCoO nanofiber capacitor are strongly dependent on frequency of applied bias voltage.
Electrospun nanofiber-based soft electronics
Electrospun Nb 2 O 5 nanorods/microporous multichannel carbon nanofiber film anode for Na + ion capacitors with good performance Author links open overlay panel Liaona She a b c, Feng Zhang a b c, Congying Jia a b …
A quasi-solid-state sodium-ion hybrid capacitor (SIHC) is constructed based on the NVPF array as an intercalative battery cathode and porous CNF as a capacitive supercapacitor anode together with the P(VDF-HFP)-based polymer electrolyte. Sodium-vanadium fluorophosphate (Na3 V2 O2 x (PO4 )2 F3-2 x, NVPF, 0 ≤ x ≤ 1) is considered …
The electrochemical properties of the ACNFC electrodes were examined in two-electrode capacitors using a 1.5 M TEABF 4 solution in AN. All the CV curves in an organic electrolyte (Fig. 2 a) displayed a box-like shape that is typical of an ideal electrical double layer capacitor in 0–2.7 V.V.
By employing CNF@NVPF as the battery-type cathode and ZnO-activated porous carbon nanofiber (pCNF) as the capacitor-type anode, a novel sodium-ion capacitor (SIC) is constructed with both high energy and powder densities (182.8 Wh kg −1 at 340 W kg −1 and 85.3 Wh kg −1 at 5898 W kg −1 based on the total mass of both …
PAN-derived carbon nanofiber composite electrode materials can achieve the synergistic effect between multi-components and multi-stage structures, so that the composites displays better …
High-frequency supercapacitors are being studied with the aim to replace the bulky electrolytic capacitors for current ripple filtering and other functions used in power systems. Here, 3D edge-oriented graphene (EOG) was grown encircling carbon nanofiber (CNF) framework to form a highly conductive electrode with a large surface area. Such …
Carbon nanofiber (CNF) was widely utilized in the field of electrochemical energy storage due to its superiority of conductivity and mechanics. However, CNF was …
Flexible polyaniline-carbon nanofiber (PANI-CNF) composites were fabricated and evaluated for use as supercapacitor electrodes. Sol-gel and …
Polymer blends yield carbon materials with superior performances for supercapacitor applications since blending can lead to controlled and fine pore architectures. In this study, a supercapacitor electrode material derived from an immiscible polymer blend comprising polyacrylonitrile (PAN) and polymethyl methacryla
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