Conductive Anti-Oxidation Coating for Copper Foil Conductivity
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Solution Overview
Problem
Current surface treatments for copper foils, such as impregnating with antioxidants, can lead to increased resistance and compromised conductivity, especially when the anti-oxidation layer is either too thick or too thin.
Innovation Solution
A copper foil structure is developed with a conductive organic anti-oxidation layer comprising an organic antioxidant and a conductive polymer, which is applied to the copper foil to prevent oxidation and maintain conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional organic anti-oxidation layer is applied to the copper foil, then the anti-oxidation ability is improved, but the conductivity of the copper foil deteriorates due to increased resistance
Solution Approach 1:
The patent applies a composite anti-oxidation layer comprising multiple materials including metal particles (silver, aluminum, or copper), organic anti-oxidation agents, and conductive polymers. This composite structure combines the protective properties of metal antioxidants with the conductivity-enhancing properties of conductive polymers, thereby preventing oxidation while maintaining electrical conductivity. The synergistic effect of these components resolves the contradiction between anti-oxidation ability and conductivity.
Solution Approach 2:
The patent modifies the composition parameters of the anti-oxidation layer by incorporating conductive polymers at specific concentrations (0.1-5 wt%) and using metal particles with controlled size distributions (0.1-10 μm). By adjusting these parameters, the layer achieves optimal balance between anti-oxidation protection and electrical conductivity, preventing the resistance increase that would occur with conventional thick organic layers.
2Reliability
If the anti-oxidation layer is made thicker to improve protection, then the anti-oxidation ability is improved, but the resistance between electrode material and copper foil increases
Solution Approach 1:
The composite structure with conductive polymers and metal particles enables the creation of a thinner protective layer that maintains adequate anti-oxidation ability while minimizing resistance. The conductive components provide electrical pathways through the layer, reducing the thickness required for effective protection.
Solution Approach 2:
The conductive polymer acts as an intermediary substance that facilitates electrical conduction through the anti-oxidation layer. It mediates between the copper foil and the electrode material, providing both protection and conductivity in a single integrated layer rather than requiring separate thick protective layers.
3Loss of energy
If the anti-oxidation layer is made thinner to reduce resistance, then the conductivity is improved, but the anti-oxidation ability deteriorates
Solution Approach 1:
The combination of metal particles, organic anti-oxidation agents, and conductive polymers creates a multi-functional composite layer that delivers both high conductivity and strong anti-oxidation ability at reduced thickness. Each component contributes specific properties that compensate for the reduced layer thickness.
Solution Approach 2:
The anti-oxidation layer exhibits local quality variations with metal particles and conductive polymers strategically distributed to provide conductivity pathways at critical locations while organic anti-oxidation agents are positioned to provide protection. This non-uniform distribution optimizes both conductivity and anti-oxidation ability within a thin layer structure.
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 conductive organic anti-oxidation layer effectively prevents copper foil oxidation and resistance increase, while maintaining the conductivity of the copper foil, thus addressing the limitations of existing surface treatments.
Implementation Method 1
a conductive organic anti-oxidation layer is formed on the copper foil layer. The conductive organic anti-oxidation layer includes an organic antioxidant and a conductive polymer
Data Source
AI summary
A copper foil structure and a manufacturing method thereof are provided. In some embodiments, the copper foil structure includes a copper foil layer and a conductive organic anti-oxidation layer. The conductive organic anti-oxidation layer is disposed on the copper foil layer, and the conductive organic anti-oxidation layer includes an organic antioxidant and a conductive polymer.