Rechargeable Metal Battery Layout for Gas Separation and Corrosion Control
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Solution Overview
Problem
Traditional metal batteries face issues due to their complex structure where a single electrode acts as both an oxidation and reduction electrode, leading to corrosion, performance deterioration, and risk of gas mixture causing ignition or explosion, and overvoltage occurrence.
Innovation Solution
A rechargeable metal battery design with separate discharging and charging units, each with its own ion exchange membrane and electrolyte, featuring a metal electrode, reduction electrode, and oxidation electrode, allowing for efficient ion exchange and gas separation to prevent corrosion and mixing of gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single electrode acts as both oxidation and reduction electrode, then device complexity is reduced, but reliability deteriorates due to corrosion and gas mixing risks
Solution Approach 1:
The patent divides the single electrode into separate oxidation electrode and reduction electrode components, with the oxidation electrode containing carbon carrier material and the reduction electrode containing catalytic metal particles. This segmentation prevents gas mixing and corrosion while maintaining functional efficiency.
2Device complexity
If oxidation electrode and reduction electrode materials coexist in the same electrode, then device complexity is reduced, but performance deteriorates due to overvoltage occurrence
Solution Approach 1:
The patent separates oxidation and reduction functions into distinct electrode components with optimized material compositions. The oxidation electrode uses carbon carrier while the reduction electrode uses catalytic metal particles, preventing overvoltage and improving electrochemical efficiency.
3Device complexity
If oxygen and hydrogen occur in the same space, then device complexity is reduced, but harmful factors increase due to ignition and explosion risks
Solution Approach 1:
The patent physically separates the spaces where oxygen and hydrogen are generated by dividing them into distinct oxidation and reduction electrode compartments. This spatial segmentation prevents gas mixing and eliminates ignition/explosion hazards while maintaining operational simplicity.
4Extent of automation
If oxygen is generated during charging, then charging function is achieved, but harmful factors increase due to corrosion of carbon carrier
Solution Approach 1:
The patent separates the oxidation reaction that generates oxygen into a dedicated oxidation electrode compartment, isolated from the carbon carrier in the reduction electrode. This prevents oxygen from corroding the carbon carrier while maintaining charging functionality.
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
The solution provides a reliably operable and efficient rechargeable metal battery with improved performance and safety by separating discharging and charging sections, reducing corrosion and the risk of gas mixture, resulting in stable charging and discharging cycles.
Implementation Method 1
a first ion exchange membrane interposed between the electrode unit and the discharging unit, and a second ion exchange membrane interposed between the electrode unit and the charging unit
Data Source
AI summary
A rechargeable metal battery with an improved efficiency, and a hydrogen generation and carbon dioxide storage system equipped with the same battery. A metal battery according to one embodiment includes an electrode unit including a metal electrode, a discharging unit disposed on a first side of the electrode unit; a charging unit disposed on a second side of the electrode unit, a first ion exchange membrane interposed between the electrode unit and the discharging unit, and a second ion exchange membrane interposed between the electrode unit and the charging unit.