Electrochemical Synthesis via Directly Heated Spiral Electrode
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Solution Overview
Problem
Existing electrochemical synthesis methods require significant energy to heat the entire electrolyte solution, leading to slow temperature changes and potential damage to sensitive substances, while also being limited in miniaturization and material turnover.
Innovation Solution
A device with a three-dimensional spiral working electrode, heated directly by alternating current through a symmetrical bridge circuit, allowing for localized and efficient heating of the electrolyte solution, minimizing heat loss and maintaining a uniform temperature distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the entire electrolyte solution is heated using conventional electrochemical synthesis methods, then the reaction temperature can be maintained, but significant energy is consumed and temperature changes occur slowly
Solution Approach 1:
The patent applies local quality by heating only the electrolyte solution in the immediate vicinity of the working electrode surface, rather than heating the entire electrolyte bulk. This is achieved through direct electrical heating of the electrode itself, creating a localized thermal zone that reduces energy consumption while maintaining reaction temperature where needed.
Solution Approach 2:
The heating function is segmented from the bulk electrolyte heating approach. Instead of heating the entire solution volume, the electrode structure itself serves as the heating element, with thermal energy being generated locally at the electrode surface and transferred only to the adjacent electrolyte layers where electrochemical reactions occur.
2Temperature
If the entire electrolyte solution is heated, then the reaction temperature can be maintained, but the temperature changes are slow
Solution Approach 1:
By concentrating the heating effect locally at the electrode surface rather than distributing it throughout the bulk electrolyte, the temperature change rate at the reaction interface is significantly increased. The localized heating allows rapid temperature adjustment without the thermal inertia of heating the entire solution volume.
3Temperature
If conventional heating methods are used, then the electrolyte can be heated, but sensitive substances may be damaged by elevated temperatures
Solution Approach 1:
The localized heating at the electrode surface ensures that only the electrolyte in immediate contact with the electrode experiences elevated temperatures, while the bulk electrolyte and sensitive substances in the cell remain at lower temperatures. This spatial separation of thermal effects protects temperature-sensitive compounds from thermal damage.
4Reliability
If layered constructions with galvanically isolated heating elements are used, then direct heating is avoided, but the structure becomes more complicated and miniaturization is limited
Solution Approach 1:
The patent merges the heating function with the working electrode itself, eliminating the need for separate galvanically isolated heating elements. The working electrode serves dual purposes: as the site of electrochemical reactions and as the heating element through direct electrical heating, thereby simplifying the overall device structure and enabling miniaturization.
Solution Approach 2:
The working electrode is designed to perform multiple functions simultaneously: electrochemical catalysis and thermal heating. This multi-functionality eliminates the need for separate heating components, reducing structural complexity and allowing for compact, miniaturized device designs.
5Stability of the object's composition
If wire electrodes with additional plastic bars are used, then the electrode construction can be stable, but microliter drops cannot be placed on them and vertical arrangement is required
Solution Approach 1:
The patent transitions from a vertical arrangement of wire electrodes with plastic bars to a planar or near-planar configuration where the working electrode surface is horizontally oriented. This dimensional change allows microliter drops to be placed directly on the electrode surface for micro-scale electrochemical reactions, while maintaining structural stability through the electrode's own mechanical strength rather than external support bars.
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 enables high material turnover and efficient electrochemical synthesis with rapid temperature control, reducing energy consumption and minimizing exposure of sensitive substances to elevated temperatures, thus enhancing reaction selectivity and product stability.
Implementation Method 1
heated directly by alternating current through a symmetrical bridge circuit
Data Source
Figure 1A~1D
Figure 2
AI summary
The present invention relates to a method for producing at least one product by electrochemical synthesis on a directly electrically heated working electrode (1), at least one reactant reacting on the heated working electrode (1) to the at least one product. The invention also relates to the use of a directly electrically heated working electrode (1) for the electrochemical synthesis of at least one product. The invention relates in particular to a working electrode (1), particularly in the form of a three-dimensional, preferably conical spiral, designed for the electrochemical synthesis. Another object of the invention is the synthesis/regeneration of an enzymatic cofactor on a working electrode (1) according to the invention.