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Bulk-Surface Electrothermodynamics and Applications to Electrochemistry.

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  • 1Weierstrass-Institute, Mohrenstr. 39, 10117 Berlin, Germany.

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We developed a new modeling framework for complex mixtures, including their interactions at interfaces. This framework enables the derivation of constitutive relations for materials like liquid electrolyte|metal electrode interfaces.

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Area of Science:

  • Multiphysics modeling
  • Interface science
  • Materials science

Background:

  • Modeling complex mixtures with multiple physical properties (magnetizable, polarizable, elastic, viscous, heat conducting, reactive) is challenging.
  • Understanding the behavior of these mixtures at interfaces is crucial for various applications.

Purpose of the Study:

  • To propose a unified modeling framework for magnetizable, polarizable, elastic, viscous, heat conducting, reactive mixtures at interfaces.
  • To derive constitutive relations for these complex systems.

Main Methods:

  • Introduction of bulk and surface balance equations.
  • Formulation of constitutive principles based on axiomatic entropy and Galilean symmetry.
  • Application of the formalism to derive abstract constitutive relations.

Main Results:

  • A general modeling framework for multiphysical mixtures and their interfaces.
  • Derivation of constitutive relations using fundamental principles.
  • An explicit isothermal model for liquid electrolyte|metal electrode interfaces.

Conclusions:

  • The proposed framework provides a rigorous approach to model complex material interfaces.
  • The derived models advance the understanding of electrochemical interfaces.