P-Type Organic Reference Electrode for Stable Potential Tracking
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Solution Overview
Problem
Existing electrochemical storage systems, such as batteries and supercapacitors, lack a reliable method to monitor the evolution of electrode potentials, particularly in systems using organic solvents, which can lead to damage and undesirable phenomena like gas production or electrodeposition, necessitating a stable reference electrode for safe and efficient operation.
Innovation Solution
Incorporating a reference electrode based on P-type organic electroactive materials, which are partially oxidized and have a constant electrochemical potential, allowing for the monitoring of positive and negative electrode potentials in metal-ion batteries and supercapacitors, including hybrid potassium supercapacitors, ensuring safe and optimized operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no reference electrode is used in electrochemical storage systems, then the system structure remains simple, but the electrode potentials cannot be monitored, leading to unsafe operation and potential damage
Solution Approach 1:
The patent introduces a reference electrode as an intermediary component between the positive and negative electrodes. This reference electrode provides a stable potential baseline that enables monitoring of electrode potentials without directly interfering with the electrochemical reactions. The reference electrode acts as a mediator that allows potential measurement while maintaining system safety and reliability.
2Measurement precision
If existing reference electrodes are used in systems with organic solvents, then potential monitoring is possible, but the reference electrodes are unstable and have unknown potentials, leading to inaccurate monitoring
Solution Approach 1:
The patent changes the chemical composition parameters of the reference electrode by using P-type organic electroactive materials with well-defined redox couples. This parameter change ensures that the reference electrode maintains a stable and known potential even in the presence of organic solvents, thereby improving both measurement precision and reliability simultaneously.
3Measurement precision
If P-type organic material-based reference electrodes are implemented, then stable and known potential is achieved for monitoring, but the device complexity increases
Solution Approach 1:
The patent implements the reference electrode concept by creating a simplified model system using P-type organic materials that can be easily integrated into existing electrochemical cells. The reference electrode structure follows a standardized design that can be replicated across different cell formats (coin cells, pouch cells, etc.), reducing the practical complexity of implementation while maintaining high measurement precision.
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 use of P-type organic material-based reference electrodes provides a stable and known potential, enabling effective monitoring of electrode potentials, preventing malfunctions and optimizing the use of batteries and supercapacitors while ensuring safety and compatibility with various cell formats.
Implementation Method 1
P-type organic electroactive materials, which are partially oxidized and have a constant electrochemical potential
Implementation Method 2
the associated redox reaction of which has a constant electrochemical potential
Data Source
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AI summary
The present invention relates to the use, as a reference electrode in a metal-ion battery cell, in particular a sodium-ion, lithium-ion, potassium-ion, or magnesium-ion battery; a lithium-sulfur or lithium-air battery; or a supercapacitor, in particular a potassium hybrid supercapacitor, of an electrode based on one or more electroactive P-type organic materials, the associated redox reaction of which has a constant electrochemical potential; said P-type organic material(s) being present in a partially oxidized, positively charged form, with charge compensation by at least one anion. It also relates to a metal-ion, lithium-sulfur, or lithium-air battery cell; or a supercapacitor cell, in particular a potassium hybrid supercapacitor, comprising three electrodes: a positive electrode, a negative electrode, and such a reference electrode.