Planarized Mesh Electrodes for Electrolysis Gas Desorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrodes for electrolysis experience high overvoltage due to poor adhesion to membranes and gas trapping, which affects the efficiency of the electrolysis process.
Innovation Solution
A planarized metal substrate with a mesh structure and a coating layer comprising ruthenium-based, cerium-based, and platinum-based oxides, along with an amine-based compound, where the wire cross-section aspect ratio is 120% or greater, enhancing adhesion and reducing gas traps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional metal substrate is used without planarization, then the manufacturing process is simpler, but the adhesion to membrane is poor and gas trap occurs
Solution Approach 1:
The metal substrate is planarized before coating application to create a flat surface. This preliminary action ensures better adhesion of the coating layer and prevents gas trap, resolving the contradiction between manufacturing simplicity and adhesion quality.
Solution Approach 2:
The aspect ratio of the wire cross-section is changed to 120% or greater through planarization. This parameter change improves the contact area between the substrate and membrane, enhancing adhesion while managing the complexity of the manufacturing process.
2Strength
If the wire cross-section aspect ratio is less than 120%, then the coating application is easier, but gas trap occurs and adhesion is reduced
Solution Approach 1:
The wire cross-section aspect ratio is optimized to 120% or greater. This specific parameter change ensures sufficient adhesion and prevents gas trap while maintaining reasonable ease of manufacture through controlled planarization processes.
3Reliability
If the metal substrate is planarized, then adhesion to membrane is improved and gas trap is reduced, but the manufacturing process becomes more complex
Solution Approach 1:
Planarization is performed as a preliminary step before coating to ensure the metal substrate has the required surface quality. This advance preparation improves electrolysis efficiency by preventing gas trap and enhancing adhesion, while the process complexity is managed through integration into the manufacturing workflow.
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 results in improved adhesion to membranes, reducing overvoltage and facilitating smooth gas desorption, thereby enhancing the electrolysis reaction efficiency.
Implementation Method 1
a coating layer including a ruthenium-based oxide, a cerium-based oxide, a platinum-based oxide, and an amine-based compound
Implementation Method 2
the metal substrate layer thereof is planarized... having increased adhesion to a membrane
Implementation Method 3
A technology of producing hydroxides, hydrogen, and chlorine by electrolyzing low-cost brine such as seawater is widely known
Data Source
AI summary
The present invention provides an electrode for electrolysis in which a planarized metal substrate having a mesh structure such that the aspect ratio of an individual cross-section of a wire constituting the mesh structure is 120% or greater is used to increase the surface area of a coating layer, thereby increasing adhesion to a membrane and gas trap is reduced to reduce overvoltage.