Carbon Nanotube Composite Electrodes for Battery Conductivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electrochemical power devices, such as batteries and fuel cells, face limitations in achieving optimal electrical conductivity and mechanical strength due to the inefficiencies in using carbon nanotubes (CNT) as electrodes, where alignment and anchoring of CNTs within conductive composite layers are not effectively addressed, impacting performance.
Innovation Solution
The development of a conductive composite layer with anchored carbon nanotubes that extend from the layer, where the CNTs can be aligned or tangled, and may include nanoscale particles or thin films, formed through processes like electroplating, template-based growth, and roll-to-roll manufacturing, enhancing their role as electrodes in electrochemical power devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carbon nanotubes are used as electrodes in electrochemical power devices, then electrical conductivity is improved, but mechanical strength and alignment within conductive composite layers are insufficient
Solution Approach 1:
The patent employs composite materials by integrating carbon nanotubes into a conductive composite layer matrix. The conductive composite layer serves as a structural framework that provides mechanical strength while the embedded carbon nanotubes contribute electrical conductivity. This composite structure resolves the contradiction by combining materials with complementary properties, where the conductive composite layer acts as the continuous phase providing mechanical support and the carbon nanotubes act as dispersed conductive elements.
2Reliability
If carbon nanotubes are anchored within conductive composite layers, then electrical conductivity is enhanced, but manufacturing complexity increases due to alignment and anchoring requirements
Solution Approach 1:
The patent applies preliminary action by pre-forming the conductive composite layer structure before introducing and anchoring the carbon nanotubes. The conductive composite layer is prepared with appropriate physical and chemical properties in advance, creating favorable conditions for subsequent carbon nanotube anchoring. This sequential approach simplifies manufacturing by breaking down the complex process into manageable steps, where each step builds upon the previous preparation.
3Reliability
If carbon nanotubes extend from conductive composite layer, then electrode performance is improved, but manufacturing precision is required to achieve proper alignment
Solution Approach 1:
The patent utilizes parameter changes by modifying the physical and chemical parameters of the conductive composite layer to control carbon nanotube alignment and extension. By adjusting parameters such as the composite layer's viscosity, surface energy, and chemical composition, the patent achieves desirable carbon nanotube orientation and anchoring without requiring extremely high manufacturing precision. This approach allows for controlled self-alignment of carbon nanotubes during the manufacturing process.
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 improves the electrical conductivity and mechanical strength of electrodes, leading to enhanced performance in energy storage and conversion devices like batteries and fuel cells by effectively utilizing the properties of carbon nanotubes.
Implementation Method 1
formed through processes like electroplating
Data Source
AI summary
A current conductor for an electrochemical power device that includes an array of carbon nanotubes (CNT) anchored in a carbon nanotube metal composite layer and a structure that may incorporate nanoscale particles or thin film onto the current conductor is described. Additionally, a process for creating the structure using electrochemical plating of the metal layer onto the CNT array followed by separation of the structure from the substrate is provided. Another process includes creating the structure using co-electrodeposition of the CNT and metal from an electroplating bath using surfactants, physical energy, and a magnetic and/or electric field to orient the CNT and enhance the CNT density in the composite.