Enhancement of Li+ Transport Through Intermediate Phase in High-Content Inorganic Composite Quasi-Solid-State Electrolytes

A high-proportion inorganic composite quasi-solid-state electrolyte was fabricated through the integration of high-speed defoamed mixers with in situ polymerization methodology. The intermediate phase, which exhibits an affinity for anion adsorption, facilitates the partial dissociation of lithium-ion solvation structures, thereby enhancing transport kinetics. The exceptional interfacial stability was demonstrated through a lithium-symmetric cell operating without short-circuiting for 6000 h, while the 5 V-class lithium metal cell maintained 80.5% capacity retention after 200 cycles in 0.5C.