Organic Hydride Electrolyzer Partitions for Current Efficiency
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Solution Overview
Problem
The production of organic hydrides faces challenges in achieving high current efficiency and low electric power consumption due to inefficient supply and removal of liquid raw materials and products at the cathode, leading to localized reactions and hydrogen generation, which hinders the reduction of unsaturated organic compounds.
Innovation Solution
An organic hydride production apparatus with a solid polymer electrolyte membrane, a porous cathode, and an electrode catalyst-containing anode, featuring partitions within the cathode chamber to ensure uniform supply and discharge of substances, preventing hydrogen accumulation and promoting high current efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional electrolytic cells are used for organic hydride production, then the reduction reaction can proceed, but current efficiency is low and electric power consumption is high due to inefficient supply and removal of liquid raw materials and products at the cathode
Solution Approach 1:
The cathode chamber is divided into multiple compartments by partitions, creating segmented flow paths that ensure uniform distribution of liquid raw materials to the cathode surface and facilitate efficient removal of products. This segmentation prevents localized reactions and improves overall current efficiency by ensuring consistent reactant supply across the entire cathode area.
Solution Approach 2:
The invention implements different structural features in different regions of the cathode chamber. Partitions are strategically positioned to create zones with optimized flow characteristics, ensuring that each region of the cathode receives adequate reactant supply. This local optimization addresses the non-uniform flow distribution that causes efficiency losses in conventional designs.
2Ease of manufacture
If liquid raw materials are supplied to the cathode without partitions, then the apparatus structure is simple, but localized reactions occur and hydrogen is generated instead of the desired organic hydride
Solution Approach 1:
Partitions are introduced into the cathode chamber to segment the liquid flow into multiple channels. This segmentation ensures uniform distribution of organic compound to the cathode surface, preventing localized depletion and the subsequent generation of hydrogen gas. The partitions maintain reaction selectivity while adding minimal structural complexity.
Solution Approach 2:
The partitions act as intermediary structures that mediate between the bulk liquid supply and the cathode surface. They distribute the liquid flow evenly across the cathode, ensuring that the reduction reaction proceeds selectively to form organic hydride rather than generating hydrogen gas through water reduction.
3Productivity
If partitions are added to the cathode chamber to improve uniformity, then current efficiency increases, but device complexity increases
Solution Approach 1:
The cathode chamber is segmented into multiple flow channels using partitions, which improves current efficiency by ensuring uniform reactant distribution. The segmentation is implemented with a practical number of partitions that balance flow uniformity with structural simplicity, avoiding excessive complexity while achieving the desired efficiency improvement.
Solution Approach 2:
The dimensions and positioning of partitions are optimized to achieve the desired flow distribution. By carefully selecting partition width, spacing, and height, the invention achieves uniform reactant supply and high current efficiency without requiring an overly complex structure. The partition geometry is tuned to match the specific electrochemical requirements.
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 apparatus enables high current efficiency and low electric power consumption in the reduction reaction of organic compounds, preventing hydrogen generation and ensuring efficient production of organic hydrides by uniformly supplying and discharging reactants and products.
Implementation Method 1
a solid polymer electrolyte membrane having proton conductivity
Implementation Method 2
a porous cathode which is provided on one surface of the solid polymer electrolyte membrane and generates a hydride by reducing a substance to be hydrogenated
Implementation Method 3
an electrode catalyst-containing anode which is provided on the other surface of the solid polymer electrolyte membrane and generates protons by oxidizing water
Implementation Method 4
at least one partition with a width of not less than 0.1 mm is formed inside the cathode chamber
Data Source
AI summary
An organic hydride production apparatus that enables the reduction reaction at the cathode of an organic compound having an unsaturated bond to proceed at high current efficiency and at a low electric power consumption rate, and a method for producing an organic hydride that uses this production apparatus. The production apparatus includes a solid polymer electrolyte membrane having proton conductivity, a cathode which is provided on one surface of the solid polymer electrolyte membrane and generates a hydride by reducing a substance to be hydrogenated, a cathode chamber which houses the cathode and is supplied with the substance to be hydrogenated, an electrode catalyst-containing anode which is provided on the other surface of the solid polymer electrolyte membrane and generates protons by oxidizing water, and an anode chamber which houses the anode and is supplied with an electrolytic solution, wherein the substance to be hydrogenated is supplied from the lower end of the cathode chamber, the production apparatus has a hydride outlet through which the product and the like is discharged from the upper end of the cathode chamber, and at least one partition with a width of not less than 0.1 mm is formed inside the cathode camber.