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Silver Nanowires Epsilon-Negative Metacomposites in Constructing Laminated Structure Meta-Capacitors
Zongxiang Wang1,2, Kai Sun3,2, Yuan Yuan1,2
1Logistics Engineering College, Shanghai Maritime University, Shanghai, 201306, China.
Small (Weinheim an Der Bergstrasse, Germany)
|June 30, 2025
Summary
New meta-capacitors using polyvinylidene fluoride, barium titanate, and silver nanowires achieve enhanced energy storage. These epsilon-negative devices offer superior dielectric properties for advanced capacitor applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Electrical Engineering
Background:
- Conventional capacitor materials face limitations in balancing dielectric constant, losses, and energy density.
- Epsilon-negative metacomposites show promise for enhanced electromagnetic properties.
- Demand for efficient energy storage and conversion in capacitors is increasing.
Purpose of the Study:
- To design and investigate laminated structure meta-capacitors for improved energy storage.
- To address the limitations of conventional materials in capacitor applications.
- To explore epsilon-negative behavior in meta-capacitors for enhanced performance.
Main Methods:
- Fabrication of meta-capacitors using polyvinylidene fluoride (PVDF), barium titanate (BaTiO3), and silver nanowires (AgNWs).
- Construction of percolation networks to induce plasma oscillation and achieve epsilon-negative behavior.
- Characterization of dielectric properties, including dielectric constant and loss tangent.
Main Results:
- The meta-capacitors exhibit significantly enhanced dielectric constant (59.74) compared to pristine PVDF (9.95).
- Loss tangent was maintained below 0.035, indicating low energy dissipation.
- Energy storage and discharge density increased by 148% and 133%, respectively, compared to conventional devices.
Conclusions:
- Laminated structure meta-capacitors offer a viable solution for superior energy storage and conversion efficiency.
- The developed meta-capacitors demonstrate potential for next-generation energy storage devices.
- This work provides insights into designing advanced meta-materials for energy applications.
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