Membrane electrode assembly, electrolytic cell, and electrolytic device
A surface roughness-relieving layer with inorganic materials addresses separator deterioration in carbon dioxide electrolysis devices by mitigating unevenness and reactive oxygen species, improving the durability and efficiency of the electrolytic cell.
JP2026087422APending Publication Date: 2026-05-27KK TOSHIBA
Patent Information
- Application Number
- JP2024200132
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2026-05-27
AI Technical Summary
Technical Problem
Existing membrane electrode assemblies in carbon dioxide electrolysis devices suffer from separator deterioration due to unevenness and damage caused by reactive oxygen species and gas crossover, leading to reduced performance and longevity.
Method used
Incorporating a surface roughness-relieving layer with smaller pore diameter than the anode, made of inorganic materials capable of decomposing, capturing, or inactivating reactive oxygen species, to mitigate surface irregularities and enhance diaphragm durability.
Benefits of technology
The solution effectively suppresses separator deterioration, maintaining long-term performance by reducing unevenness and preventing gas crossover, thus enhancing the stability and efficiency of the electrolytic cell.
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Smart Images
Figure 2026087422000001_ABST
Abstract
The present invention provides a membrane electrode assembly, an electrolytic cell, and an electrolytic device that enable the suppression of membrane degradation. [Solution] The film electrode assembly comprises a cathode positioned in contact with the material to be reduced for reducing the material to be reduced, an anode positioned in contact with the electrolytic solution containing the oxide for oxidizing the oxide, a diaphragm separating the cathode and the anode, and a layer provided between the anode and the diaphragm, containing inorganic material and mitigating surface irregularities of the anode. The average pore diameter of the layer is smaller than the average pore diameter of the anode.
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Citation Information
Patent Citations
Carbon Dioxide Electrolysis Device
JP7524118B2