Solid Oxide Fuel Cell Separator Groove and Protrusion Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Solid oxide fuel cells face challenges in achieving optimal current resistance and battery performance due to limitations in separator design and conductivity.
Innovation Solution
The fuel cell design incorporates a cathode, anode, and electrolyte layer with specific groove and protrusion patterns on separators, along with an electrically conductive pattern inserted into the groove pattern of the second separator, enhancing air and fuel supply and conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional separator design is used, then device complexity is reduced, but current resistance increases and battery performance deteriorates
Solution Approach 1:
The separator is divided into multiple regions with different functions: groove patterns for fluid distribution and protrusion patterns for electrical conduction. This segmentation allows the separator to simultaneously manage fluid flow and electrical resistance, resolving the contradiction between performance and complexity
Solution Approach 2:
Different regions of the separator are assigned different properties: grooves provide fluid channels while protrusions provide conductive pathways. This local differentiation optimizes both fluid distribution and electrical conductivity in their respective zones, improving battery performance without requiring complete structural redesign
2Productivity
If groove pattern is added to separator, then fluid flow distribution is improved, but manufacturing complexity increases
Solution Approach 1:
The groove pattern and protrusion pattern are integrated into a single separator structure, where the grooves for fluid distribution and protrusions for conduction are formed simultaneously. This merging reduces the number of separate manufacturing steps compared to adding separate components, making the design more manufacturable
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 results in reduced current resistance and improved battery performance, as evident from lower sheet resistance measurements and enhanced I-V-P curve performance.
Implementation Method 1
an electrically conductive pattern provided on a surface of the anode current collector facing the second separator along the groove pattern of the second separator, in which the electrically conductive pattern is inserted into the groove pattern of the second separator
Implementation Method 2
a first separator positioned on an opposite surface to the surface of the cathode with the electrolyte layer and provided with a flow channel pattern having a groove pattern and a protrusion pattern, to which air is supplied; a second separator positioned on an opposite surface to the surface of the anode with the electrolyte layer and provided with a flow channel pattern having a groove pattern and a protrusion pattern, to which fuel is supplied
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present specification relates to a solid oxide fuel cell comprising an anode, a cathode, and an electrolyte provided between the anode and the cathode.