Graphite Intercalation Compound Conductors for Aerospace Weight Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Graphite intercalation compounds, while offering reduced weight and comparable electrical conductivity, are brittle and have limited electrical conductivity normal to the planes due to guest molecule intercalation, which restricts their application in weight-sensitive industries like aerospace.
Innovation Solution
Forming electrical conductors by surrounding graphite intercalation compounds with multiple layers of electrically conductive material, extending coverage in both planar and normal directions to enhance conductivity and durability, and dispersing these compounds within a base matrix for further weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If graphite intercalation compounds are used as electrical conductors, then weight is reduced and in-plane electrical conductivity is improved, but the material becomes brittle and electrical conductivity normal to the planes is reduced
Solution Approach 1:
The patent combines graphite intercalation compounds with metallic materials to form a composite electrical conductor. The graphite intercalation compound provides weight reduction and high in-plane conductivity, while the metallic material compensates for brittleness and provides conductivity in the normal direction, creating a composite structure that balances all required properties
Solution Approach 2:
The patent structures the electrical conductor with graphite intercalation compound layers nested within or surrounded by metallic material layers. This nested arrangement allows the lightweight graphite core to provide mass reduction while the enclosing metallic layers provide mechanical strength and supplemental conductivity pathways
2Weight of moving object
If graphite intercalation compounds are used as electrical conductors, then weight is reduced, but electrical conductivity normal to the planes is reduced
Solution Approach 1:
The composite structure combines graphite intercalation compound with metallic material, where the metallic component provides conductivity pathways in the normal direction that compensate for the graphite's limited through-plane conductivity, ensuring reliable electrical transmission in all directions
Solution Approach 2:
The metallic material acts as an intermediary that bridges the electrical conductivity limitation of graphite in the normal direction, providing alternative conduction pathways that enable reliable electrical transmission perpendicular to the graphite planes
3Weight of moving object
If graphite intercalation compounds are used as electrical conductors, then weight is reduced and in-plane electrical conductivity is improved, but the material is susceptible to exfoliation at increased temperatures
Solution Approach 1:
The patent creates a composite where thermally stable metallic material surrounds or supports the graphite intercalation compound, providing thermal anchoring that prevents exfoliation at elevated temperatures while preserving the weight reduction benefits of the graphite component
Solution Approach 2:
The metallic material provides pre-established thermal support and structural reinforcement to the graphite intercalation compound, cushioning against thermal stress and preventing exfoliation before it can occur during temperature increases
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 achieves significant weight reduction with maintained or improved electrical conductivity, addressing brittleness and directional conductivity limitations, making them suitable for weight-critical applications like aerospace.
Implementation Method 1
at least some known processes effectively introduce 'dopant' guest molecules or atoms between the graphene layers via diffusion due to the relatively weak bond strength between adjacent graphene layers in graphitic carbon
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
An electrical conductor is provided. The electrical conductor includes a graphite intercalation compound and at least one layer of electrically conductive material extending over at least a portion of the graphite intercalation compound. The graphite intercalation compound includes a carbon-based particle and a plurality of guest molecules intercalated in the carbon-based particle.