Semi-IPN Polymer Electrolyte for Strength-Conductivity Balance

The patent employs a composite polymer electrolyte system combining polyethylene oxide (PEO) with a crosslinking agent. The PEO provides ionic conductivity through its crystalline structure, while the crosslinking agent forms a three-dimensional network that reinforces mechanical strength. This composite approach allows both functions to coexist: the PEO chains maintain ion transport pathways while the crosslinked structure prevents mechanical degradation.

The patent modifies the physical and chemical parameters of the polymer electrolyte by introducing crosslinking. The crosslinking degree and network density are controlled to optimize the balance between mechanical strength and ionic conductivity. By adjusting crosslinking parameters, the material transitions from a purely semi-crystalline structure to a crosslinked semi-crystalline structure with enhanced mechanical properties while preserving ion transfer capability.

The patent carefully controls the crosslinking parameters including crosslinking agent concentration, crosslinking density, and network structure. By optimizing these parameters, the crosslinked structure provides mechanical strength without creating excessive barriers to ion transport. The crosslinking is designed to be sparse enough to allow ion pathways while dense enough to provide structural integrity.

The crosslinking is distributed throughout the polymer matrix in a controlled manner, creating local regions of enhanced mechanical strength while maintaining overall ion transfer pathways. The crosslinked network provides structural support in specific regions without completely blocking the ion transport channels that run through the polymer electrolyte.