Electrolysis Cell Control Layer for Electrolyte Leaching Balance
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Solution Overview
Problem
Existing electrolysis devices face inefficiencies due to excessive leaching of electrolyte materials from the electrolyte layer to the electrodes, leading to increased overvoltage and side reactions, which hinder the improvement of electrolysis efficiency, particularly when operated in the temperature range of 100° C. to 500° C.
Innovation Solution
The electrolysis device incorporates a control layer composed of a porous material with a second ion-conductive material supported in its pores, ensuring controlled leaching of electrolyte components to maintain optimal ion and electron conduction paths, thereby regulating the amount of electrolyte that leaches into the electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the electrolyte layer material leaches to the electrode, then the voltage required for the electrode reaction is reduced and the selectivity of the target product is improved, but when the leaching excessively occurs, an increase in overvoltage and side reactions become dominant, which hinders the improvement of the electrolysis efficiency
Solution Approach 1:
The control layer is constructed as a porous structure with controlled porosity (30-70%) that allows selective transport of species while preventing excessive electrolyte material leaching to the electrode. The porous architecture enables ion transport necessary for the reaction while limiting the amount of electrolyte material that can migrate to the electrode surface, thus balancing voltage reduction with efficiency maintenance.
Solution Approach 2:
The control layer comprises a composite of porous material and ion-conductive material, combining the structural framework of the porous material with the ion-conductive properties of the ion-conductive material. This composite structure provides both the mechanical support and the ion transport pathways while controlling the leaching behavior of electrolyte materials, achieving optimal electrochemical performance.
2Manufacturing precision
If the electrolyte layer material leaches to the electrode, then the selectivity of the target product is improved, but when the leaching excessively occurs, side reactions become dominant
Solution Approach 1:
The porous control layer acts as a selective barrier that allows beneficial ion transport while restricting excessive electrolyte material migration to the electrode. The controlled pore structure ensures that only the necessary amount of electrolyte material reaches the electrode surface, maintaining high product selectivity while preventing conditions that would promote unwanted side reactions.
Solution Approach 2:
The control layer modifies the local chemical and physical parameters at the electrode interface by controlling the concentration and distribution of electrolyte materials. By regulating the leaching process through the porous structure, the layer optimizes the chemical environment at the electrode surface, favoring the main reaction pathway while suppressing side reactions.
3Reliability
If a control layer with porous material and ion-conductive material is added, then the leaching of electrolyte components is controlled, but the device complexity increases
Solution Approach 1:
The electrolysis device is segmented into distinct functional layers: the electrolyte layer, the control layer with porous and ion-conductive materials, and the electrode. This segmentation allows each layer to perform its specific function independently, with the control layer specifically tasked with regulating electrolyte material leaching, thereby simplifying the overall system design and maintenance.
Solution Approach 2:
The control layer serves multiple functions simultaneously: it controls electrolyte material leaching, facilitates ion transport, provides structural support, and regulates the chemical environment at the electrode interface. By combining these functions in a single layer, the design avoids the need for multiple separate components, thereby limiting the increase in device complexity.
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 enhances electrolytic efficiency by maintaining favorable reaction conditions, reducing overvoltage, and improving the selectivity of reduction products while minimizing power consumption and side reactions.
Implementation Method 1
an electrolyte layer provided between the cathode and the anode, and including an electrolyte layer material containing at least one selected from the group consisting of a heat-resistant polymer, a solid acid, a solid acid salt, and a molten salt, and a first ion conductive material
Implementation Method 2
a control layer that is provided at least one of between the cathode and the electrolyte layer and between the anode and the electrolyte layer, and that includes a porous material and a second ion-conductive material supported in at least a part of pores of the porous material
Implementation Method 3
a control layer that is provided at least one of between the cathode and the electrolyte layer and between the anode and the electrolyte layer, and that includes a porous material and a second ion-conductive material supported in at least a part of pores of the porous material
Data Source
AI summary
According to an embodiment, an electrolysis device includes a cathode for reducing a reduction target to generate a reduction product, an anode for oxidizing an oxidation target to produce an oxidation product, an electrolyte layer provided between the cathode and the anode, and the electrolyte layer including an electrolyte layer material containing at least one selected from the group consisting of a heat-resistant polymer, a solid acid, a solid acid salt, and a molten salt, and a first ion conductive material, and a control layer that is provided at least one of between the cathode and the electrolyte layer and between the anode and the electrolyte layer, and that includes a porous material and a second ion-conductive material supported in at least a part of pores of the porous material, wherein 0≤A≤B is satisfied, where A is an area of the second ion conductive material on a surface of the control layer on the cathode side or/and the anode side, and B is an area of the second ion conductive material on a surface of the control layer on the electrolyte layer side.