The research and development of a new type of solid-state electrolyte has been successfully completed

Recently, Professor Ma Cheng from the University of Science and Technology of China proposed a low-cost and commercially viable solution to address the issue of all-solid-state lithium batteries relying too heavily on external pressure to maintain good interfacial contact during cycling, making them difficult to implement in practical applications. Recently, this achievement was published in the internationally renowned academic journal Nature Communications.

It is reported that all-solid-state lithium batteries are expected to break the bottleneck that current liquid lithium-ion batteries cannot achieve both high safety and high energy density. However, since the electrolyte and electrode of all-solid-state lithium batteries are both solid, they often require external pressure of tens or even hundreds of megapascals to maintain good interfacial contact, which is almost impossible to achieve in practical scenarios. The key to solving this problem lies in finding a solid electrolyte that can effectively change its shape even under low pressure, thereby maintaining close contact with electrode materials whose volume is constantly changing. In this study, Ma Cheng developed a new type of solid electrolyte, lithium zirconium aluminum chlorine oxide, which achieves the above performance.