Plasma-Induced Water Splitting Using Single Cooled Electrode
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Solution Overview
Problem
Conventional water splitting methods face challenges such as high energy consumption, electrode corrosion, contamination of treated water, and the need for pre-purified water, limiting efficiency and increasing costs.
Innovation Solution
A method using plasma-induced water splitting with a single flat, cooled plasma electrode at atmospheric pressure, applying high-frequency alternating voltage to dissociate water into hydrogen and oxygen without direct electrode contact, employing a non-thermal plasma process that allows dissociative electron attachments and excitations, enabling efficient hydrogen production using various water types without pre-cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrolysis is used to split water, then hydrogen can be produced, but electrode corrosion and contamination of treated water occur
Solution Approach 1:
The patent introduces a plasma field as an intermediary between the electrode and water. Instead of direct contact between electrode and water causing corrosion and contamination, the plasma field mediates the water splitting process, allowing hydrogen production without electrode-water contact. The plasma acts as a reactive medium that enables dissociation while preventing direct electrochemical corrosion.
Solution Approach 2:
The patent replaces the conventional electrochemical mechanism with a plasma-based mechanism. Instead of using electrical current directly to drive electrolysis at electrode surfaces, the system uses a plasma field to generate reactive species that facilitate water splitting. This substitution eliminates the mechanical/electrochemical contact that causes corrosion and contamination.
2Productivity
If electrolysis is used for water splitting, then hydrogen can be produced, but high energy consumption and high costs occur
Solution Approach 1:
The patent changes the fundamental parameters of the water splitting process by transitioning from thermal/electrochemical methods to plasma-based methods. The plasma field creates a different reaction environment with higher energy density and more efficient charge transfer, enabling water splitting at lower overall energy consumption while maintaining or improving hydrogen production rates.
Solution Approach 2:
The patent employs periodic application of voltage to generate plasma. By using pulsed or alternating voltage patterns, the system efficiently sustains the plasma field without continuous high energy input. The periodic activation allows the plasma to reach stable reactive states while minimizing average energy consumption compared to continuous electrolysis.
3Adaptability or versatility
If conventional water splitting methods are used, then hydrogen can be produced, but pre-purified water is required
Solution Approach 1:
The plasma-based system is self-service in its ability to handle various water types directly. The plasma field's high reactivity allows it to process raw water without requiring pre-purification, as the plasma can accommodate different water compositions and impurity levels while maintaining effective water splitting. This eliminates the need for complex pre-treatment systems.
4Productivity
If two electrodes are used for water splitting, then hydrogen and oxygen can be produced, but electrode contamination and corrosion occur
Solution Approach 1:
The patent extracts the water splitting function from the electrode surfaces themselves and relocates it to the plasma field. By removing the direct electrode-water interface, the system eliminates the source of corrosion and contamination while maintaining hydrogen and oxygen production capabilities. The electrodes become passive components that merely generate the plasma field rather than actively participating in the water splitting reaction.
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 achieves higher efficiency and cost-effectiveness by avoiding electrode contamination, allowing the use of diverse water sources and reducing energy consumption, resulting in a stable and efficient hydrogen production process.
Implementation Method 1
a plasma is formed in the high-frequency field between the plasma electrode and a surface of the water
Implementation Method 2
Applying a high-frequency alternating voltage at atmospheric pressure to exactly one flat, cooled plasma electrode
Implementation Method 3
This enables dissociative electron attachments and dissociative excitations of the water
Implementation Method 4
The invention uses a so-called plasma electrolysis, ie a non-thermal plasma that initiates processes induced by electron impact
Data Source
Figure 1~2
AI summary
The invention relates to a method for plasma-induced splitting of water. The particular feature in the invention resides in the fact that the provision of water with a predetermined filling level in an ungrounded water reservoir within a reaction chamber, the application of exactly one flat, cooled plasma electrode with a high-frequency alternating voltage arranged at a predetermined distance over the filling level of the water reservoirat atmospheric pressure, in such a way as a plasma forms in the high-frequency field between the plasma electrode and a surface of the water, in which plasma water disassociates to form hydrogen and oxygen and the collection of the hydrogen and of the oxygen in a common output gas line from the reaction chamber are comprised.