Electrolyzer Matrix Cell Degassing for Gas Separation
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Solution Overview
Problem
Existing electrolyzer systems face challenges in effectively separating product gases and maintaining electrolyte homogeneity due to integrated gas and water spaces, leading to inefficiencies and potential gas accumulation.
Innovation Solution
The introduction of a matrix cell with separate electrolyte, cathodic, and anodic gas spaces, each isolated by membranes, and a degassing device that allows selective emergence of product gases into designated spaces, combined with ultrasound and field generation to enhance gas transport and electrolyte homogeneity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an integrated gas and water space is used in the electrolyzer system, then the device complexity is reduced, but the gas separation efficiency deteriorates and gas accumulation occurs
Solution Approach 1:
The electrolyzer system is divided into separate functional zones: a water space for electrolyte accommodation and a gas space for product gas collection. This segmentation is achieved through physical partitioning (e.g., diaphragms, membranes, or separate chambers) that prevents gas-liquid mixing while maintaining system functionality. The segmentation resolves the contradiction by sacrificing structural simplicity to achieve effective gas separation, preventing gas accumulation and improving reliability.
2Reliability
If circulation is used for gas separation, then the gas separation efficiency is improved, but the device complexity increases
Solution Approach 1:
The gas separation function is extracted from the bulk electrolyte circulation system and implemented through dedicated separation mechanisms such as diaphragms, membranes, or separate gas collection chambers. This extraction allows gas to be separated directly at the electrode-membrane interface or through selective permeation, eliminating the need for complex circulation-based separation systems while maintaining high separation efficiency.
3Device complexity
If the water space is used as gas space, then the device complexity is reduced, but the electrolyte homogeneity deteriorates
Solution Approach 1:
The electrolyzer system separates the water space and gas space into distinct zones, preventing the mixing of electrolyte and product gas. This segmentation ensures that the electrolyte remains homogeneous in the water space while product gas is collected separately in the gas space, eliminating the deterioration of electrolyte homogeneity that would occur if the spaces were integrated.
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 gas separation efficiency, reduces gas accumulation, and maintains electrolyte homogeneity, improving the regeneration capacity and operational stability of electrolyzer systems.
Implementation Method 1
a, preferably electrolyte-tight, degassing device, which is designed to allow selective emergence of product gas located in the electrolyte space into at least one of the gas spaces
Implementation Method 2
the degassing device is designed to allow selective emergence of cathodic product gas, located in the electrolyte space, into the cathodic gas space
Implementation Method 3
a cathodic gas space, disposed adjacent to the electrolyte space and separated therefrom by a gastight first membrane
Implementation Method 4
the degassing device is disposed in a degassing aperture formed in at least one membrane, in order to provide selective passage for the product gas from the electrolyte space into at least one of the gas spaces
Implementation Method 5
combined with ultrasound and field generation to enhance gas transport and electrolyte homogeneity
Implementation Method 6
combined with ultrasound and field generation to enhance gas transport and electrolyte homogeneity
Implementation Method 7
electrolyzing an aqueous electrolyte... energizing of the cathode electrode allows a cathodic product gas to be generated at an interface of the cathode electrode with the first membrane
Data Source
AI summary
Matrix cells are used to improve the regeneration capacity of an electrolyzer system. The electrolyte is electrolyzed in the matrix cell. Gas (predominantly product gas) which has unwantedly accessed the electrolyte space is transported off from the electrolyte space into the gas space envisioned therefor by a degassing device. Additional measures such as ultrasonic transducers and field electrodes may realize electrolyte flow and improved transporting-off of gas.