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it house reported on october 7 that researchers at mcgill university in canada have discovered a method to improve the performance of solid-state lithium batteries, which is expected to promote the advancement of electric vehicle battery technology.

according to a new study by a mcgill university research team, they have successfully solved the long-standing performance bottleneck of solid-state lithium batteries, paving the way for the development of safer and longer-lasting electric vehicles.

according to it house, a major challenge faced by solid-state lithium batteries has always been the interface impedance between the ceramic electrolyte and the electrode, which reduces the efficiency and energy output of the battery. the research team solved this problem by innovatively using a porous ceramic membrane instead of a traditional dense plate and filling it with a small amount of polymer.

"by using a polymer-filled porous membrane, we can allow lithium ions to move freely and eliminate the interfacial resistance between the solid electrolyte and the electrode," said george demopoulos, professor in the department of materials engineering and leader of the research team. "this not only improves the performance of the battery, but also improves battery performance. and it creates a stable interface for high-voltage operation, which is a key goal for the industry."

currently, lithium-ion batteries mainly rely on liquid electrolytes, which poses safety risks. solid-state lithium batteries are designed to replace liquid components with solid materials to improve safety and efficiency. the new research offers a new way to overcome a key obstacle to the commercialization of solid-state lithium batteries.

"this discovery brings us closer to developing the next generation of safer and more efficient electric vehicle batteries," said senhao wang, the study's first author and a doctoral graduate in the department of materials engineering.