Electrochemical Control via Damped Sinewave EMF

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing electrochemical systems are inefficient and reliant on expensive catalysts and hazardous chemicals, with limitations in process improvements due to inadequate understanding of electrochemical processes and incorrect modeling of electrical double layer capacitance.

Innovation Solution

Development of a new equivalent electrical model and control mechanisms for electrochemical systems, including the use of damped sinewave emf superimposed onto DC emf, to precisely control the Nernst diffusion layer thickness and limiting current density, reducing the need for expensive catalysts and hazardous agents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If DC emf is used for electrochemical processes, then the process can operate continuously, but the efficiency remains low and expensive catalysts are required

Engineering Contradiction:

Improveprocess efficiencyVSAvoidenergy efficiency

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent applies periodic AC emf superimposed on DC emf to create time-varying electric fields that enhance mass transport and reaction kinetics. The periodic modulation of the electric field prevents concentration polarization and improves current efficiency, thereby resolving the contradiction between continuous operation and energy efficiency.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent changes the electrical parameters by introducing AC components with varying frequencies and amplitudes to the DC emf. This parameter modulation optimizes the electrochemical reactions by controlling the double layer charging and discharging cycles, improving overall process efficiency while reducing energy losses.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If conventional electrochemical systems are used, then the processes can be maintained, but they remain dependent on expensive catalysts and hazardous chemicals

Engineering Contradiction:

Improveprocess stabilityVSAvoidcatalyst dependency

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces chemical catalysts with physically controlled electric field modulation. By using AC emf to control reaction kinetics and mass transport, the system eliminates or reduces dependence on expensive chemical catalysts while maintaining process stability through electrical parameter control.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent enables the electrochemical system to self-regulate through the periodic charging and discharging of the electrical double layer. This self-service mechanism naturally controls mass transport and reaction rates without requiring external catalysts, reducing both cost and complexity.

Inventive Principle:

Principle #25Self-service

3Ease of manufacture

If incorrect modeling of electrical double layer capacitance is used, then the systems can operate, but process improvements are limited

Engineering Contradiction:

Improveprocess implementabilityVSAvoidprocess improvement capability

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The patent incorporates feedback control by monitoring the electrical double layer behavior and adjusting the AC emf parameters accordingly. This feedback mechanism enables real-time optimization of the electrochemical process, allowing continuous improvement while maintaining ease of operation through automated control.

Inventive Principle:

Principle #23Feedback

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 leads to significant improvements in process efficiency, energy savings, reduced environmental and health issues, and simpler equipment design, while eliminating trial-and-error methods and minimizing parasitic reactions.

Implementation Method 1

Electrochemical systems are key to basically the entire industrial output of the world and life itself depends on electrochemistry

Methodology Applied

Scientific EffectElectrochemical reactions: Electrolysis

Implementation Method 2

precisely control the Nernst diffusion layer thickness and limiting current density

Methodology Applied

Scientific EffectNernst diffusion layer: Diffusion

Implementation Method 3

incorrect modeling of electrical double layer capacitance

Methodology Applied

Scientific EffectElectrical double layer capacitance: Capacitance

Data Source

PatentUS11624118B2Systems and methods for controlling electrochemical processes

Publication Date: 2023.04.11 WILLIAMSON FLOYD L

AI summary

A system is disclosed for controlling an electrochemical process. The system has a power source that is coupled to a power amplifier. The power amplifier is configured to provide an electromotive force (emf) signal, and a plurality of electrodes apply the emf signal to an electrochemical solution. A control element is configured to control the power amplifier such that the emf signal exhibits a predetermined frequency, amplitude, and duty cycle for reducing a thickness of the Nernst diffusion layer such that an operational parameter is set to a predetermined value.