Rod-Structured Solid Oxide Cell for Uniform Gas Flow
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Solution Overview
Problem
Solid oxide cells face challenges in achieving efficient gas flow and reactivity due to random pore formation in conventional electrode structures, limiting their performance as fuel cells and water electrolysis cells.
Innovation Solution
A novel solid oxide cell structure featuring a plurality of rods with an aspect ratio of 2 or more, where at least one of the electrodes is formed along the surfaces of these rods, and an electrolyte with a base layer and protruding rods, enhancing gas flow and reaction areas by controlling pore size and shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a porous electrode structure is used to enable gas flow, then gas permeability is improved, but the structure becomes complex and manufacturing precision deteriorates
Solution Approach 1:
The electrode is divided into multiple rod-shaped protrusions with specific aspect ratios (2 or more) arranged in an array, replacing the conventional random porous structure. This segmentation provides defined gas flow paths while maintaining manufacturing precision through controlled geometry of individual rod elements.
Solution Approach 2:
The invention changes the structural parameters of the electrode by introducing rods with specific aspect ratios (≥2) and regular arrangements, transforming the random porous structure into a controlled geometric pattern that enables precise control over gas flow characteristics.
2Productivity
If the electrode surface area is increased to enhance reaction area, then reactivity is improved, but device complexity increases
Solution Approach 1:
The electrode transitions from a conventional planar structure to a three-dimensional array of rod-shaped protrusions with aspect ratios of 2 or more. This dimensional change increases the effective reaction surface area while maintaining relatively simple fabrication processes through controlled formation of vertical rod structures.
3Ease of operation
If a conventional porous electrode structure is used, then gas flow is enabled, but uniformity of gas distribution and reaction paths deteriorates
Solution Approach 1:
The electrode employs an array of rods with uniform dimensions and regular spacing, creating homogeneous gas flow paths and reaction areas. This homogeneous structure ensures uniform gas distribution across the electrode surface, improving operational consistency compared to random porous structures.
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 structure improves reactivity and gas flow, leading to enhanced performance in both fuel cell and water electrolysis applications by creating uniform electrical, ion conduction, and gas flow paths, increasing the effective reaction area.
Implementation Method 1
a solid oxide cell includes a fuel electrode, an air electrode, and an electrolyte disposed between the fuel electrode and the air electrode
Implementation Method 2
The solid oxide cell produces electrical energy through an electrochemical reaction or electrolyzes water through the reverse reaction of a solid oxide fuel cell
Implementation Method 3
electrolyzes water through the reverse reaction of a solid oxide fuel cell to produce hydrogen
Data Source
AI summary
A solid oxide cell includes a fuel electrode, an air electrode, and an electrolyte disposed between the fuel electrode and the air electrode and including a plurality of rods. At least one of the fuel electrode or the air electrode is disposed along surfaces of the plurality of rods.