Ion Exchange Membrane Fabrication via Electric Field Channel Alignment
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Solution Overview
Problem
Ion exchange membranes have inefficient ion movement due to ion channels extending in various directions, hindering rapid ion transport and thus requiring a method to align these channels for enhanced conductivity.
Innovation Solution
A device and method utilizing an electric field to align ion channels in a specific direction during the manufacturing process of ion exchange membranes, applying an AC electric field to a polymer solution to form aligned ion channels, thereby improving ionic conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ion channels are formed in various directions in the ion exchange membrane, then the membrane structure is naturally formed with ion exchangers, but the ion travelling distance becomes long and ion movement efficiency decreases
Solution Approach 1:
An electric field is applied during the membrane formation process to preliminarily align the ion channels in a specific direction before the membrane is fully formed. This preliminary alignment action ensures that ion channels extend primarily in the thickness direction, reducing ion travelling distance and improving movement efficiency while maintaining the necessary ion exchange function
Solution Approach 2:
The patent changes the physical parameter of the forming process by introducing an electric field parameter. By applying an external electric field during membrane formation, the orientation of ion channels is controlled through electrostatic forces, transforming the random channel formation into directed channel alignment, thereby improving ion transport efficiency
2Productivity
If ion channels are aligned in one direction to reduce ion travelling distance, then ion movement efficiency improves, but the manufacturing process becomes more complex
Solution Approach 1:
The patent replaces complex mechanical alignment methods with an electric field-based approach. Instead of using mechanical forces or physical constraints to align ion channels, an electric field is applied during formation, which naturally orients the ion exchangers and channels through electrostatic forces. This substitution simplifies the manufacturing process while achieving the desired channel alignment
Solution Approach 2:
The electric field alignment is performed as a preliminary step during membrane formation, combining the alignment function with the formation process itself. This integration means that no additional separate alignment step is required, and the alignment is achieved concurrently with membrane fabrication, thereby avoiding significant increases in manufacturing 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
The alignment of ion channels results in a 4 to 20-fold increase in ionic conductivity compared to conventional methods, with improved productivity and energy efficiency, and the technique is broadly applicable without requiring new materials.
Implementation Method 1
aligning the fixed ions in an electric field direction... passing the material continuously through a region where the electric field is applied to continuously align the inner fixed ions
Implementation Method 2
deflecting the ion channels present in the material to minimize the travelling distance of the ions... deflecting ion exchangers attached to a polymer backbone in a polymer solution in one direction to form the ion channels
Data Source
AI summary
The present disclosure relates to a technique for improving the ionic conductivity by introducing an electric field concept to a process for preparing an ion exchange membrane and deflecting an ion channel within an ion exchange membrane in one direction, and specifically to a device for fabricating an ion exchange membrane and a method therefor in a roll-to-roll manner and a casting manner with a deflected ion channel which can improve the ionic conductivity of the ion exchange membrane by reducing a travelling distance of the ions in the deflected ion channels.