University of Maryland develops printable solid electrolyte film to promote the development of next-generation lithium batteries

my country Energy Storage Network News: Lithium batteries are widely used in portable electronic equipment, electric vehicles and grid energy storage systems, but the electrolyte of traditional lithium batteries is an organic liquid, which is prone to fire and explosion. In contrast, the use of ceramic solid electrolyte (SSE) films can prevent the growth of lithium dendrites and prevent short circuits caused by thermal runaway, thereby providing feasible and safe solutions, while increasing energy density and promoting the development of next-generation lithium batteries. However, due to the poor quality of the material, the ion conductivity of the currently used SSE films is low, about 10-8 to 10-5 S/cm. (Image source: umd) According to foreign media reports, a research team led by LiangbingHu of the University of Maryland’s A. James Clark School of Engineering (A. James Clark School of Engineering) has recently developed a new method of printing and sintering various SSE films. The team named this method 'printing and radiant heating' (PRH), which is characterized by the use of a solution-based printable technology and rapid sintering. In a typical process, the precursor suspension is printed on the substrate, and the concentration and thickness can be adjusted. Then, in an environment of about 1500°C, after about 3 seconds of rapid high-temperature sintering, an SSE film with excellent performance and quality can be obtained, thereby minimizing lithium loss and achieving high crystallinity. With this method, not only can the SSE film have a dense and uniform microstructure, but also good ion conductivity can be achieved. It is worth mentioning that it only takes about 5 minutes to complete the manufacturing process from the precursor to the final product, which is about 100 times faster than the traditional method. The team demonstrated in a proof-of-concept demonstration a garnet-based printed SSE film with high ionic conductivity of up to 1ms/cm and excellent cycle stability. This method can also be applied to a variety of other designs, such as complex multilayer assembly to prevent cross-contamination during the synthesis process; in addition, it can also be used to prepare other ceramic thin films for the development of high-performance solid-state safety batteries and other thin-film-based Devices open up new opportunities. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: German fluid design technology to achieve customized battery processing