3D Electrode Array for High Energy Density Batteries
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Solution Overview
Problem
Current electrochemical storage and conversion devices face challenges in achieving high power and energy densities, mechanical robustness, and miniaturization for diverse applications, particularly in portable electronics and aerospace, where existing designs and materials do not fully meet the demands for high performance and reliability across various operating environments.
Innovation Solution
The development of three-dimensional electrode arrays comprising plate and rod electrodes with specific geometries and materials, where the electrodes are arranged in parallel orientations with apertures and electrolytes, allowing for enhanced surface areas and structural integrity, enabling improved energy storage and conversion capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If three-dimensional electrode arrays with plate and rod electrodes are used, then energy storage density and surface area utilization are improved, but device complexity increases
Solution Approach 1:
The electrode system is divided into multiple plate electrodes and rod electrodes, creating a segmented three-dimensional array structure. This segmentation increases the total surface area available for electrochemical reactions while distributing the energy storage function across multiple components, thereby improving energy storage density without concentrating all complexity in a single element
Solution Approach 2:
The invention transitions from traditional two-dimensional planar electrodes to a three-dimensional array configuration with plate electrodes arranged in multiple layers and rod electrodes extending through apertures. This dimensional change maximizes surface area utilization within a compact volume, improving energy storage density while the modular nature of the 3D array helps manage structural complexity
2Quantity of substance
If electrode surface area is increased through three-dimensional configuration, then energy storage capacity is improved, but mechanical robustness deteriorates
Solution Approach 1:
Rod electrodes with curved or cylindrical surfaces are used instead of flat planar structures. The curved geometry of rod electrodes provides inherent mechanical strength and resistance to deformation while maximizing surface area for electrochemical reactions, thus improving energy storage capacity without sacrificing mechanical robustness
Solution Approach 2:
The electrode array employs composite construction with plate electrodes, rod electrodes, and separator materials working together as an integrated structure. This composite approach distributes mechanical stresses across different components and materials, enhancing overall structural strength while maintaining the high surface area necessary for energy storage capacity
3Volume of moving object
If miniaturization is pursued for portable electronics, then device size is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The battery system is divided into modular plate electrodes and rod electrodes that can be manufactured separately using standardized processes, then assembled into compact three-dimensional arrays. This segmentation enables miniaturization of the overall device while maintaining manufacturability through repeated use of standard components and assembly procedures
Solution Approach 2:
The rod electrodes serve multiple functions: they provide current collection, structural support, and electrochemical reaction surfaces. This multi-functionality reduces the number of separate components needed in miniaturized devices, simplifying manufacturing while achieving compact size through efficient use of space and materials
4Power
If high power density is achieved through three-dimensional electrode arrays, then energy conversion rate is improved, but heat generation increases
Solution Approach 1:
The electrode array divides the electrochemical reaction volume into multiple smaller compartments with plate and rod electrodes distributed throughout. This segmentation distributes heat generation across multiple localized reaction sites rather than concentrating it, improving power density while managing heat generation through distributed thermal sources that can be more effectively cooled
Solution Approach 2:
Rod electrodes with cylindrical geometry provide increased surface area for heat dissipation compared to flat plates of equivalent volume. The three-dimensional curved surfaces of rod electrodes expose more material to the electrolyte and surrounding environment, enhancing heat transfer and cooling efficiency while maintaining high power density through improved surface area to volume ratio
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A
AI summary
A three-dimensional electrode array for use in electrochemical cells, fuel cells, capacitors, supercapacitors, flow batteries, metal-air batteries and semi-solid batteries.