Phase-field Modeling of Phase Changes and Mechanical Stresses in Electrode Particles of Secondary Batteries

Phase-field Modeling of Phase Changes and Mechanical Stresses in Electrode Particles of Secondary Batteries

Most storage materials exhibit phase changes, which cause stresses and, thus, lead to damage of the electrode particles. In this work, a phase-field model for the cathode material NaxFePO4 of Na-ion batteries is studied to understand phase changes and stress evolution. Furthermore, we study the part...

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Bibliographic Details
Main Author: Zhang, Tao (auth)
Format: Book Chapter
Published: Karlsruhe KIT Scientific Publishing 2021
Subjects:
Mechanical engineering & materials
Phasenfeldansatz
Phasentrennung
Nichtlokalität
Endliche Verformungselastizität
Sekundärbatterien
Phase-field approach
Phase segregation
Nonlocality
Finite deformation elasticity
Secondary batteries
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Summary:Most storage materials exhibit phase changes, which cause stresses and, thus, lead to damage of the electrode particles. In this work, a phase-field model for the cathode material NaxFePO4 of Na-ion batteries is studied to understand phase changes and stress evolution. Furthermore, we study the particle size and SOC dependent miscibility gap of the nanoscale insertion materials. Finally, we introduce the nonlocal species concentration theory, and show how the nonlocality influences the results.
Physical Description:1 electronic resource (224 p.)
ISBN:KSP/1000100537
9783731510024
Access:Open Access

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