Intrinsic Electrochemical Interphase Stability as a Structural Admissibility Condition for Electrochemical Storage Systems

Description (Abstract) This work establishes intrinsic electrochemical interphase stability as a necessary structural admissibility condition for electrochemical storage materials and systems that claim durable cycling, long service life, safety, or industrial deployability. The analysis is non-constructive and does not disclose any specific electrolyte, additive, salt, solvent, polymer, ceramic, electrode chemistry, formation protocol, or interface treatment. Instead, it formalizes a boundary condition under which a claimed electrochemical system must possess interphase stability as an identity-level property under relevant operating regimes, rather than as a consequence of continuous interphase management, sacrificial chemistry, narrow operating avoidance, or procedural formation rituals. This condition constrains patentability at the level of enablement, inventive step, and industrial applicability and applies uniformly across liquid, gel, polymer, and solid-state electrochemical systems. This document functions as prior art defining admissibility, not as a technical teaching.