While lithium-ion batteries, widely used in mobile devices from cell phones to laptops, have one of the longest lifespans of commercial batteries today, they also have been behind a number of recent meltdowns and fires due to short-circuiting in mobile devices. In hopes of preventing more of these hazardous malfunctions researchers have developed a recipe that can turn electrolyte solution -- a key component of most batteries -- into a safeguard against the chemical process that leads to battery-related disasters.