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Memory Effects' Mechanism in the Intercalation Batteries: The Particles' Bipolarization
Amir Haghipour1, Massoud Momeni1, Hatef Yousefi-Mashhour1
1Ceramic Department, Materials and Energy Research Centre, 31787-316, Tehran, Iran.
ACS Applied Materials & Interfaces
|February 11, 2022
Summary
The bipolarization mechanism explains memory effects (ME) in intercalation batteries. Aged particles cause higher voltage reactions, impacting battery performance and design.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Understanding charge-discharge behaviors is crucial for energy storage devices.
- Memory effect (ME) significantly influences battery applications and performance.
Purpose of the Study:
- To explain the memory effect (ME) in intercalation batteries using the particles' bipolarization mechanism.
- To elucidate the underlying mechanisms influencing battery charge-discharge behaviors.
Main Methods:
- Proposed a bipolarization mechanism for reactant/product phases within particles.
- Investigated ME by analyzing particle bipolarization and subsequent neutralization.
- Conducted experiments to verify the proposed mechanism and its influence on ME.
Main Results:
- The bipolarization mechanism successfully explains known ME features and unconsidered aspects.
- Aged-neutralized particles react at higher voltages than fresh ones, causing ME.
- Demonstrated the mechanism's ability to explain increased charge voltage with longer rest times.
Conclusions:
- The bipolarization mechanism provides a comprehensive explanation for ME in intercalation batteries.
- This mechanism aids in understanding and engineering battery behaviors, impacting design and control.
- Experimental verification supports the proposed mechanism's validity and explanatory power.
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