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Category:OSW2abfbcad25e455a5b12fb5e4c9b50117: Difference between revisions
Category:OSW2abfbcad25e455a5b12fb5e4c9b50117 (view source)
Revision as of 09:10, 3 April 2025
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=== Half-Cell Approach === | === Half-Cell Approach === | ||
The pseudo-open-circuit voltage (pseudo-OCV) method is a practical and widely used approach for characterizing the equilibrium potential of intercalation electrodes as a function of their state of charge. When implemented in half-cell configurations, the method | The pseudo-open-circuit voltage (pseudo-OCV) method is a practical and widely used approach for characterizing the equilibrium potential of intercalation electrodes as a function of their state of charge. When implemented in half-cell configurations, the method observes the working electrode voltage versus a reference electrode under near-equilibrium conditions. These measurements are critical for building accurate, physics-based models of electrochemical systems. | ||
==== Purpose and Advantages of Half-Cell Measurements ==== | ==== Purpose and Advantages of Half-Cell Measurements ==== | ||
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The pseudo-OCV method is suitable for both harvested and freshly fabricated electrodes. When applied to newly manufactured electrodes, it enables early-stage evaluation of electrochemical behavior, thermodynamic reversibility, and suitability for integration into devices. | The pseudo-OCV method is suitable for both harvested and freshly fabricated electrodes. When applied to newly manufactured electrodes, it enables early-stage evaluation of electrochemical behavior, thermodynamic reversibility, and suitability for integration into devices. | ||
To ensure valid results, fresh electrodes should be adequately formed to stabilize their initial | To ensure valid results, fresh electrodes should be adequately formed to stabilize their initial behaviour. It may be that the pseudo-OCV protocol itself is sufficient to do formation or conditioning on some electrodes; further research on this topic is needed. | ||
==== Experimental Methodology ==== | ==== Experimental Methodology ==== | ||
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* active material density / g cm<sup>-3</sup> | * active material density / g cm<sup>-3</sup> | ||
The test temperature must also be recorded, as electrode potentials are typically temperature dependent. If the electrode is newly fabricated, its formation and cycling history should be documented to confirm stability and representative | The test temperature must also be recorded, as electrode potentials are typically temperature dependent. If the electrode is newly fabricated, its formation and cycling history should be documented to confirm stability and representative behaviour. | ||