Electroneutral Porous Separator for Oxocarbon Electrolyzers
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Solution Overview
Problem
Existing oxocarbon electrolyzers face challenges with high costs due to the expensive process of implanting charged chemicals into ion exchange membranes, which affects mechanical stability and ion exchange capacity, limiting the use of high differential pressures and increasing the risk of membrane rupture.
Innovation Solution
The use of an electroneutral separator in oxocarbon electrolyzers, which is formed from electrically insulative yet ionically conductive materials, allows for ionic migration between the anode and cathode areas without the need for implanted charged chemicals, thereby reducing costs and enhancing mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If charged chemicals are implanted into ion exchange membranes to enable ion migration, then ion exchange capacity is improved, but manufacturing cost increases and mechanical stability deteriorates
Solution Approach 1:
The patent extracts and removes the charged chemicals from the membrane structure, replacing them with a charged liquid electrolyte that fills pores in an electroneutral porous separator. This eliminates the need for expensive implantation processes while maintaining ion exchange functionality through the liquid electrolyte phase.
Solution Approach 2:
The patent employs a porous separator material with controlled pore structures that can be filled with charged liquid electrolyte. The porous structure enables ion migration through the electrolyte-filled pores while the solid separator matrix provides mechanical support, eliminating the need to implant charges into the membrane itself.
2Reliability
If charged chemicals are implanted into ion exchange membranes to enable ion migration, then ion exchange capacity is improved, but mechanical stability worsens
Solution Approach 1:
The patent segments the ion exchange function from the mechanical support function. The electroneutral porous separator provides mechanical stability while the charged liquid electrolyte filling the pores provides ion exchange capacity. This separation allows each component to be optimized independently for its specific function.
Solution Approach 2:
The patent creates a composite system combining an electroneutral porous solid separator with a charged liquid electrolyte. The solid separator matrix provides mechanical strength while the liquid electrolyte phase enables ion migration, achieving both mechanical stability and ion exchange capacity without the trade-offs of implanted charged membranes.
3Productivity
If high differential pressures are applied to enhance electrolysis performance, then productivity is improved, but the risk of membrane rupture increases
Solution Approach 1:
The patent uses a porous separator with a solid matrix structure that provides high mechanical strength and rupture resistance. The porous structure allows pressure differential to drive electrolyte and ion flow while the solid walls of the pores prevent membrane rupture even under high differential pressure conditions.
Solution Approach 2:
The patent replaces the fragile charged membrane with a robust electroneutral porous separator structure that can withstand high pressures. The separator copies the ion migration function through its porous structure filled with electrolyte, but uses a mechanically stronger solid matrix that does not rely on implanted charged chemicals that limit pressure tolerance.
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 approach significantly reduces the overall cost of the electrolyzer, improves mechanical stability, and allows for the use of higher differential pressures, enhancing the performance and reliability of the oxocarbon electrolysis process.
Implementation Method 1
The electroneutral separator can be formed by electrically insulative material while being ionically conductive. As such, the separator can allow for ionic migration between the anode area and cathode area
Implementation Method 2
The coating increases the hydrophilicity of the porous separator. The coating can be formed from a material that is nonionic at neutral pH, water insoluble, water immiscible, insoluble or sparingly soluble in small alcohols
Data Source
AI summary
Methods and systems related to oxocarbon electrolyzers are disclosed herein. A disclosed system includes an oxocarbon electrolysis reactor. The rector includes an aqueous anode area with an oxidation substrate, a gaseous cathode area with an oxocarbon species as a reduction substrate, and an electroneutral separator separating the anode area and the cathode area while allowing ionic migration between the anode area and cathode area. In specific approaches disclosed herein the electroneutral separator is a polymer having a coating, the coating is formed of an aliphatic molecule, and the coating increases a hydrophilicity of the electroneutral separator. In specific approaches disclosed herein, the electroneutral separator is a polymer having a coating, the polymer comprises aliphatic carbon chains, and the coating is an aliphatic carbon chain with one or more hydrophilic functional groups.