Flow Battery Electrode with Cutout Openings for Turbulent Mixing
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Solution Overview
Problem
Energy storage systems, such as flow batteries, face challenges in efficiently mixing electrolytes within cells, leading to non-uniform ion concentrations and reduced electrode surface area utilization, which affects energy storage and discharge efficiency.
Innovation Solution
The electrode design features a base plate with partially cutout portions that extend away from the planar surface, creating openings to enhance electrolyte mixing and flow on both sides of the plate, facilitating uniform ion distribution and increased surface area for material deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a planar electrode base plate is used, then the electrode structure is simple and manufacturing is easy, but electrolyte mixing is poor leading to non-uniform ion concentrations
Solution Approach 1:
The base plate is segmented by partially cutting out portions from the planar surface, creating multiple openings that divide the electrolyte flow path. This segmentation allows electrolyte to access both sides of the electrode at multiple locations, improving mixing and uniformity while maintaining a relatively simple manufacturing process from a flat plate
Solution Approach 2:
The electrode design transitions from a purely two-dimensional planar surface to a three-dimensional structure by having cutout portions that extend through the plate thickness. This creates openings that allow electrolyte penetration in the third dimension (through the plate), enabling mixing and access to both sides simultaneously
2Device complexity
If a planar electrode base plate is used, then the electrode structure is simple, but the available surface area for material deposition is reduced
Solution Approach 1:
By creating openings through partial cutouts of the base plate, the electrode utilizes both sides of the plate for material deposition. This transforms a single-sided planar surface into a dual-sided three-dimensional structure, effectively doubling the available surface area while maintaining the simplicity of a flat plate base structure
3Ease of operation
If electrolyte flow is not enhanced, then the system operation is simple, but mixing efficiency is poor and energy storage performance is reduced
Solution Approach 1:
The openings in the base plate segment the electrolyte flow into multiple pathways, creating turbulence and enhanced mixing as electrolyte passes through and around the electrode. This passive segmentation improves mixing efficiency without requiring additional active components or complex operation procedures
Solution Approach 2:
The electrode structure itself serves the dual function of both electrochemical reaction and flow mixing enhancement. The cutout portions and openings are integral to the electrode, allowing it to improve its own performance without requiring separate mixing devices or complex operational interventions
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 configuration promotes turbulent electrolyte flow, ensures uniform ion concentrations, and increases the available electrode surface area for material deposition, enhancing the energy storage and discharge performance of the system.
Implementation Method 1
the openings and the cutout portions are configured to enhance mixing of the electrolyte when the electrolyte is received in the flow chamber
Data Source
AI summary
An energy storage system includes a cell having a flow chamber for receiving electrolyte, and an electrode positioned in the cell. The electrode includes a base plate having a generally planar portion and a plurality of partially cutout portions partially cut out from the generally planar portion to define a plurality of openings in the base plate. Each cutout portion is attached to the generally planar portion and has a projecting part that extends away from the generally planar portion. Furthermore, the openings and the cutout portions are configured to enhance mixing of the electrolyte when the electrolyte is received in the flow chamber.