Li-Ion Electrode Assembly Bonding for Adhesion Without Ion Loss

The separator is designed with a porous structure comprising inorganic fine particles (such as aluminum oxide, aluminum hydroxide, magnesium hydroxide, silicon oxide, titanium oxide, or zinc oxide) dispersed in a polymer binder matrix. The porous configuration allows electrolyte to penetrate and flow through the separator, maintaining ionic conductivity while the inorganic particles provide structural integrity and adhesion to the electrode interface without requiring additional adhesive materials that would block ion transport.

The separator combines inorganic fine particles with a polymer binder to create a composite material structure. This composite approach provides both mechanical adhesion strength through the inorganic particle network and ionic conductivity through the polymer matrix and porous channels, simultaneously addressing both requirements without the need for separate adhesive layers.

The separator employs a porous inorganic-coated structure where inorganic fine particles are dispersed throughout the polymer matrix rather than forming a dense coating layer. This porous configuration maintains thermal stability through the inorganic particles while preserving adhesion capability by allowing the polymer binder to interact with the electrode surface and maintain flexible bonding at the interface.

The separator uses a composite structure where inorganic fine particles are integrated within the polymer binder matrix, creating a unified material that provides both thermal resistance and adhesive properties. The inorganic particles contribute thermal stability while the polymer binder ensures adequate adhesion to the electrode, eliminating the need for a separate coating layer that would compromise adhesion.

The separator is designed as a composite material where inorganic fine particles are dispersed in a polymer binder matrix. The polymer binder provides the necessary electrical insulation properties to prevent internal short circuits, while the inorganic particles provide thermal stability. This composite approach simultaneously addresses both requirements that failed when using inorganic coating alone.

The porous structure of the separator, with inorganic particles dispersed in the polymer matrix, maintains electrical insulation through the polymer material while allowing ionic transport through the porous channels. The inorganic particles provide thermal stability without compromising the insulating properties, as the polymer binder continuously surrounds and isolates the conductive inorganic particles.