Fluid Permeable Electrode for CO2 Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electrochemical reaction devices for CO2 reduction using light energy face inefficiencies in energy conversion and production rates due to limitations in catalyst design and reaction pathways, leading to suboptimal production of valuable carbon compounds.
Innovation Solution
The electrochemical reaction device incorporates a fluid permeable conductor electrode with a reduction catalyst and a photoelectric conversion layer, allowing for a larger reaction area and controlled current density, enhancing the production efficiency of carbon compounds like carbon monoxide, formic acid, and methanol through optimized catalyst placement and light energy utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional electrode structure is used, then the device structure is simple, but the reaction area is limited and production rate is low
Solution Approach 1:
The patent employs a porous conductive support as the electrode structure, which provides a large surface area for catalyst deposition. The porous structure allows electrolyte penetration and provides numerous active sites for electrochemical reactions, thereby significantly increasing the production rate of carbon compounds while maintaining a relatively simple overall device structure.
Solution Approach 2:
The patent transitions from a conventional planar electrode to a three-dimensional porous electrode structure. This dimensional change increases the effective reaction area without proportionally increasing the device footprint, enabling higher production rates while keeping the device structure manageable through vertical stacking of components.
2Productivity
If high current density is applied, then the production rate increases, but energy conversion efficiency decreases
Solution Approach 1:
The patent distributes the current density uniformly across the porous electrode structure by optimizing catalyst placement and conductive support geometry. This local quality optimization ensures that high current density is achieved at the reaction sites while maintaining efficient electron transport throughout the structure, preventing energy loss and improving overall energy conversion efficiency.
Solution Approach 2:
The patent optimizes the porous structure's electrical conductivity and catalyst distribution to dynamically adapt current flow patterns. This ensures that current is efficiently directed to active catalytic sites while minimizing resistive losses, enabling high production rates with improved energy conversion efficiency.
3Use of energy by moving object
If catalyst placement is optimized, then selectivity and energy conversion efficiency improve, but manufacturing complexity increases
Solution Approach 1:
The patent combines the catalyst and conductive support into an integrated composite electrode structure. The catalyst is impregnated or deposited directly onto the porous conductive support, creating a unified component that simplifies manufacturing while maintaining optimized catalyst placement for high energy conversion efficiency and selectivity.
Solution Approach 2:
The porous conductive support serves multiple functions simultaneously: it provides structural framework, ensures electrical conductivity, enables electrolyte transport, and serves as the substrate for catalyst deposition. This multi-functionality reduces manufacturing complexity by eliminating the need for separate components while maintaining optimized catalyst placement.
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 significantly increases the production rate of reduction products by 1000 times while maintaining low current density, improving energy conversion efficiency and selectivity, thus addressing the inefficiencies in existing technologies.
Implementation Method 1
a photoelectric conversion layer, allowing for a larger reaction area and controlled current density, enhancing the production efficiency of carbon compounds
Implementation Method 2
The first electrode reduces the first substance... compounds such as cellulose and saccharides are synthesized through the reduction of carbon dioxide (CO2)
Implementation Method 3
The second electrode oxidizes the second substance... electrons are gained through the oxidation of water (H2O), and compounds such as cellulose and saccharides are synthesized
Data Source
AI summary
An electrochemical reaction device of an embodiment includes: an electrolytic solution tank; a first electrode in the first room; a second electrode in the second room; and a generator. The electrolytic solution tank includes a first room and a second room. The first room is capable of storing a first electrolytic solution containing a first substance including carbon dioxide. The second room is capable of storing a second electrolytic solution containing a second substance. The first electrode reduces the first substance. The second electrode oxidizes the second substance. The generator is electrically connected to the first and second electrodes. The first electrode includes a conductor having a flow path penetrating through the conductor.