Flexible Supercapacitor Integrated Systems

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: 9(21)

Published: March 10, 2024

Abstract There is a pressing need for flexible integrated systems owing to the swift progress of electronics. Apart from flexibility, supercapacitor (FSC) exhibit certain characteristics like rapid charge–discharge rates, high power density, and excellent cycling stability, which makes them promising candidate serve as vital component in In this context, an in‐depth overview recent FSC‐integrated systems, including their design structure, materials, fabrication techniques, applications, offered. On basis current progress, existing challenges future prospects are also outlined discussed.

Language: Английский

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Investigation on electrochemical behavior of rGO nanosheet supported cobalt doped vanadium pentoxide nanorods as a battery type asymmetric capacitor device

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 84, P. 110956 - 110956

Published: Feb. 16, 2024

Language: Английский

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Construction of novel coaxial electrospun polyetherimide@polyaniline core-shell fibrous membranes as free-standing flexible electrodes for supercapacitors

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 602, P. 234305 - 234305

Published: March 21, 2024

Language: Английский

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N‐Doped Holey Graphene/Porous Carbon/Cellulose Nanofibers Electrode and Hydrogel Electrolyte for Low‐temperature Zinc‐ion Hybrid Supercapacitors

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract The susceptibility to freezing of the electrolyte and mismatched cathode make aqueous zinc‐ion hybrid supercapacitors (ZHSCs) have inferior electrochemical performance at low temperature. Herein, a novel freeze‐tolerant hydrogel (CEEZ) matched graphene/porous carbon/cellulose nanofibers (GPCN) are respectively fabricated via chemical cross‐linking two‐step process assemble ZHSCs. prepared electrode has highly porous structure, abundant edge active sites, increased interlayer spacing, which collectively reduces ion transport complexity enhances contact area with electrolyte, promoting rapid ionic conduction pathways. For CEEZ, use ethylene glycol saturated vapor pressure water, thereby enhancing frost resistance electrolyte. Consequently, ZHSCs assembled from GPCN, Zn anode exhibit excellent specific capacitances 1.11 F cm⁻ 2 (21.35 3 ) 20 °C 0.74 (14.23 −20 °C. These results demonstrate promising application potential these in cold environments while maintaining impressive energy storage capabilities. This work provides valuable insights robust strategy for design high‐performance low‐temperature ZHSCs, their practical applicability renewable systems.

Language: Английский

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High Density 3D Carbon Tube Nanoarray Electrode Boosting the Capacitance of Filter Capacitor

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: July 3, 2024

Electric double-layer capacitors (EDLCs) with fast frequency response are regarded as small-scale alternatives to the commercial bulky aluminum electrolytic capacitors. Creating carbon-based nanoarray electrodes precise alignment and smooth ion channels is crucial for enhancing EDLCs' performance. However, controlling density of macropore-dominated poses challenges in boosting capacitance line-filtering EDLCs. Herein, a simple technique finely adjust vertical-pore diameter inter-spacing three-dimensional nanoporous anodic oxide (3D-AAO) template achieved, 3D compactly arranged carbon tube (3D-CACT) nanoarrays created symmetrical EDLCs using 3D-AAO template-assisted chemical vapor deposition carbon. The 3D-CACT demonstrate high surface area 253.0 m

Language: Английский

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Oxygen vacancies meet partial S substitution: an effective strategy to achieve obvious synergistic effects and adjustable electrochemical behavior in NiFe-LDH for enhanced OER and capacitive performance

Inorganic Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 10(18), P. 5391 - 5405

Published: Jan. 1, 2023

Attributed to the strong synergy between S and oxygen vacancies, as well adjustable electrochemical behavior, prepared bifunctional electrode exhibited superior OER capacitive performance.

Language: Английский

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Taming of heteropoly acids into adhesive electrodes using amino acids for the development of flexible two-dimensional supercapacitors

Polyoxometalates, Journal Year: 2024, Volume and Issue: 3(3), P. 9140062 - 9140062

Published: Feb. 29, 2024

The development of heteropoly acids (HPAs) based functional soft materials is an important topic both in science and energy devices. non-covalently supramolecular strategy has continued to evolve its capacity create innovative HPA with increasingly complex functions that are not accessible by traditional covalent synthesis. In this study, we explored a kind HPA-containing conductive adhesive via simple non-covalent strategy. We demonstrated the concomitant ionic bonds, hydrogen charge-transfer interactions, p-p stacking hydrophobic effect enable aromatic amino acids, HPAs carbon crosslink each other. As consequence, formed showcased collective advantages, such as exceptional wet adhesion flexible substrates electrolytes, adaptive deformable properties, conduction reversible redox behavior. These features allow us fabricate two-dimensional (2D) supercapacitors (SCs) conveniently injecting all-in-one adhesives onto substrates. capacitance retention SC 92% during bending folding deformation. particular, could be patterned into tandem 2D SCs for high voltage output metal-free interconnects.

Language: Английский

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Facile synthesis of Co3O4@N-pc/PEDOT composites for supercapacitor electrode

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1003, P. 175553 - 175553

Published: July 14, 2024

Language: Английский

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Highly Conductive Films Through PEDOT‐PSS Ink Formulation via Doping Using Spontaneous Wicking of Liquids for Supercapacitor Applications

Advanced Energy and Sustainability Research, Journal Year: 2024, Volume and Issue: 5(7)

Published: March 10, 2024

A novel electrode fabrication method based on liquid doping of PEDOT‐PSS onto PET‐G film by drop casting is reported. dispersed liquid‐PEDOT‐PSS solution prepared as an ink a synthesis method. The EG/DMSO:PEDOT‐PSS then cast oxygen plasma‐modified films for fabrication. Their surface topography and electrochemical characteristics are characterized. results show that the material has electrical conductivity 11661.7 11528.8 S m −1 EG‐ DMSO‐treated films, respectively. Ink formulation achieves unprecedented via spontaneous wicking. specific capacitance 134 F g at scanning rate 5 mV s 309.6 20 EG respectively, three‐electrode system while pristine calculated 80 4.6 . engineered superior supercapacitor performance through Moreover, Fourier‐transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), Raman measurements confirm removal PSS due to liquid–liquid doping. Energy‐dispersive X‐ray analysis proves expulsion molecules from interface. Therefore, die‐cast PET‐G‐PEDOT‐PSS promising candidate advanced applications.

Language: Английский

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Co Nanoparticle-loaded Porous Carbon for High-Performance Supercapacitors

International Journal of Electrochemical Science, Journal Year: 2024, Volume and Issue: 19(8), P. 100652 - 100652

Published: May 16, 2024

Porous carbon materials doped with transition metals have emerged as promising electrode in the field of energy storage due to their higher theoretical capacitance and cost-effectiveness. In this study, metallic cobalt nanoparticles (Co NPs) were successfully loaded into porous via one-step carbonization method for electrochemical research applications (Co/CM). A comparative investigation was conducted by varying content polystyrene microspheres (PS) optimize morphology. Scanning electron microscopy (SEM) analysis revealed that Co/CM-3 composite displayed a plate-like structure, while transmission (TEM) confirmed uniform loading Co NPs within skeleton. The optimal PS (Co/CM-3) exhibited specific up 810 F g-1 (at 1 g-1) three-electrode system. Furthermore, asymmetric supercapacitors assembled prepared positive activated negative demonstrated an impressive density 40 Wh kg-1 power 746 W kg-1). Remarkably, retention rate remained at 88.24% even after 5000 consecutive charge discharge cycles, highlighting potential material practical storage.

Language: Английский

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