Battery fires led to the recall of nearly 2 million Samsung Galaxy Note 7 smartphones. In order to address this safety concern, researchers at Stanford University have identified 21 solid electrolytes for solid state batteries that could power the next-generation of electronics.
“Electrolytes shuttle lithium ions back and forth between the battery’s positive and negative electrodes,” says lead author of the study Austin Sendek, a doctoral candidate at Stanford University, who worked with ECS member Yi Cui on this research. “Liquid electrolytes are cheap and conduct ions really well, but they can catch fire if the battery overheats or is short-circuited by puncturing.”
“The main advantage of solid electrolytes is stability,” Sendek says. “Solids are far less likely to blow up or vaporize than organic solvents. They’re also much more rigid and would make the battery structurally stronger.”