Polymer Electro-Thermal Composites Below Carbon Percolation Limits
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Solution Overview
Problem
Existing technologies face challenges in integrating low-dimensional carbon structures into polymer matrices below the percolation limit, which is crucial for optimizing the properties of electro-thermal materials.
Innovation Solution
A composition comprising a mixture of at least two low-dimensional carbon nanostructures, such as nanospheroids, linear, and planar nanostructures, is integrated into a polymer matrix, with the mixture remaining below the percolation limit of each nanostructure type, allowing for improved electro-thermal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If low-dimensional carbon nanostructures are integrated into a polymer matrix to improve mechanical strength and thermal conductivity, then the electro-thermal performance is enhanced, but the nanostructure concentration may exceed the percolation limit leading to loss of control over thermal and electrical properties
Solution Approach 1:
The patent applies parameter changes by carefully controlling the concentration of low-dimensional carbon nanostructures (such as graphene, carbon nanotubes, or carbon nanofibers) within the polymer matrix to remain below the percolation limit. This parameter control enables the material to achieve improved mechanical strength and thermal conductivity while maintaining precise control over thermal and electrical properties, avoiding the loss of control that would occur at higher concentrations.
Solution Approach 2:
The patent utilizes composite materials by combining low-dimensional carbon nanostructures with a polymer matrix to create a nanocomposite system. This composite approach leverages the exceptional mechanical strength and thermal conductivity of carbon nanostructures while the polymer matrix provides flexibility and processability, achieving enhanced electro-thermal performance with controlled nanostructure distribution.
2Manufacturing precision
If the nanostructure mixture is kept below the percolation limit to maintain control over properties, then manufacturing precision is improved, but the electro-thermal performance and heat generation capability are reduced
Solution Approach 1:
The patent applies parameter changes by optimizing the concentration of carbon nanostructures to the highest level below the percolation threshold. This careful parameter selection allows the material to maintain control over thermal and electrical properties while achieving sufficient heat generation capability for practical applications, balancing precision with functional performance.
Solution Approach 2:
The patent applies local quality by ensuring uniform distribution of carbon nanostructures throughout the polymer matrix at concentrations below the percolation limit. This localized optimization of nanostructure placement maximizes heat generation efficiency at the nano-scale while maintaining overall control over the material's thermal and electrical properties at the macro-scale.
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
The solution enables the development of electro-thermal materials that can generate controlled heat, suitable for various applications, by maintaining the nanostructures below their individual percolation limits, enhancing mechanical strength and thermal conductivity.
Implementation Method 1
The thermoelectric effect refers to phenomena by which either a temperature difference creates an electric potential or an electric potential creates a temperature difference
Implementation Method 2
enhancing mechanical strength and thermal conductivity
Data Source
AI summary
Compositions, and methods of obtaining them, useful for lithium ion batteries comprising discrete oxidized carbon nanotubes having attached to their surface lithium ion active materials in the form of nanometer sized crystals or layers. The composition can further comprise graphene or oxygenated graphene.