Nanocomposite Capacitor Core-Shell Fillers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current high-energy density capacitors face limitations due to the trade-off between dielectric permittivity and breakdown strength, resulting in low energy density, making them bulky and costly for applications like pulse power devices.
Innovation Solution
The development of nanocomposite capacitors with a core-shell structured ceramic filler and functionalized particles dispersed in a high breakdown strength polymer material, creating a gradient interface to enhance dielectric permittivity while maintaining breakdown strength, thereby achieving high energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If high dielectric permittivity ceramic filler is added to polymer material, then dielectric permittivity is improved, but breakdown strength is reduced
Solution Approach 1:
The patent applies local quality by creating a core-shell structure where the core region provides high dielectric permittivity while the shell region provides high breakdown strength. The ceramic filler particles have a core-shell structure with a polymer shell coating that provides high breakdown strength protection, allowing the ceramic core to contribute high permittivity without sacrificing overall breakdown strength. Additionally, the polymer matrix contains polar groups localized at specific regions that enhance permittivity without compromising the overall breakdown strength of the composite material.
Solution Approach 2:
The patent employs composite materials by combining ceramic filler particles with polymer matrix material to create a nanocomposite capacitor dielectric. The composite structure integrates the high permittivity advantage of ceramic materials with the high breakdown strength advantage of polymer materials. The ceramic filler particles are dispersed in the polymer matrix, creating a composite that achieves both high permittivity and high breakdown strength simultaneously, resolving the trade-off between these two properties.
2Strength
If polymer material with high breakdown strength is used, then breakdown strength is improved, but dielectric permittivity is reduced
Solution Approach 1:
The patent applies local quality by creating a core-shell structure where the core region provides high dielectric permittivity while the shell region provides high breakdown strength. The ceramic filler particles have a core-shell structure with a polymer shell coating that provides high breakdown strength protection, allowing the ceramic core to contribute high permittivity without sacrificing overall breakdown strength. Additionally, the polymer matrix contains polar groups localized at specific regions that enhance permittivity without compromising the overall breakdown strength of the composite material.
Solution Approach 2:
The patent employs composite materials by combining ceramic filler particles with polymer matrix material to create a nanocomposite capacitor dielectric. The composite structure integrates the high permittivity advantage of ceramic materials with the high breakdown strength advantage of polymer materials. The ceramic filler particles are dispersed in the polymer matrix, creating a composite that achieves both high permittivity and high breakdown strength simultaneously, resolving the trade-off between these two properties.
3Use of energy by moving object
If nanocomposite structure is created to improve energy density, then energy density is improved, but manufacturing complexity is increased
Solution Approach 1:
The patent applies segmentation by dividing the ceramic filler particles into core-shell structured units with distinct functional regions. The core provides high permittivity while the shell provides breakdown strength protection. This segmentation allows each particle to be optimized for multiple functions simultaneously, achieving high energy density without requiring complex multi-layer film structures or intricate manufacturing processes. The segmented particle design simplifies the overall manufacturing approach compared to creating complex composite film architectures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach results in nanocomposite capacitors with significantly improved energy density, exceeding 19.6 J/cc, and enhanced breakdown strength, suitable for applications in pulse power devices without the bulkiness and cost issues of current technologies.
Implementation Method 1
The present invention relates to a nanocomposite having a high dielectric permittivity nanoengineered particles dispersed into a high breakdown strength polymer material to achieve high energy density
Implementation Method 2
The ceramic fillers are designed as core-shell structure, followed by coating the second layer of functional groups, to achieve a good dispersion in the polymer material and without causing a signification reduction in breakdown strength
Data Source
AI summary
A composite film having a high dielectric permittivity engineered particles dispersed in a high breakdown strength polymer material to achieve high energy density.