Research progress on thermal safety of all solid-state lithium batteries
With the wide application of liquid lithium batteries,thermal runaway phenomenon occurs from time to time,and their thermal safety has become an urgent issue to be solved.The all-solid-state lithium batteries show great application potential due to their excellent safety.The basic concept and structure of all-solid-state lithium batteries were briefly introduced,especially the latest research progress on oxide,sulfide and polymer solid electrolytes.Meanwhile,the differences in the thermal safety of these three types of all-solid-state lithium batteries,including thermal safety at level of solid electrolyte material,the level of the interface between solid electrolyte and mixing of active material or lithium metal cathode,and the thermal safety at the level of full-cell battery were summarized.In addition,it was pointed out that the influence of lithium dendrite phenomenon on the safety of all-solid-state lithium batteries was still not negligible.At present,there were many studies on the thermal safety at the material and interface levels,but only a few studies at the full-cell level with most focused on small-capacity batteries,therefore,the thermal safety at the full-cell battery level still needed to be further investigated.Finally,it was suggested that the future commercialization of high-safety all-solid-state lithium batteries should focus on solving the key interface problems and lithium dendrite problems in all-solid-state lithium batteries.
all solid-state lithium batterieshigh specific energythermal safetysolid electrolyteslithium dendrite
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