期刊
ADVANCED FUNCTIONAL MATERIALS
卷 31, 期 25, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202100938
关键词
batteries; interface; passivation; stability; thermodynamics
类别
资金
- Projekt DEAL
This study analyzes the profiles of the decisive thermodynamic potentials in a battery, with a focus on the solid electrolyte interphase (SEI) passivation layers that form. The results can also be applied to fuel cells or electrolyzers.
The profiles of the decisive thermodynamic potentials in a battery are analyzed with emphasis on the solid electrolyte interphase (SEI) passivation layers that form. Consequences for growth and chemical stability are discussed. The extreme cases of an artificial SEI and a thermodynamically fully defined in situ SEI are distinguished. The analysis also includes the open-circuit voltage drop over the combination SEI/electrolyte. The treatment is rigorous for the assumed simplified conditions (constant transport coefficients, pseudo-1D geometry, and absence of space charge zones and structural complications). In the last section, more realistic situations are addressed on a less quantitative level. The results can also be applied to fuel cells or electrolyzers.
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