When it comes to batteries, there are always areas for improvement: the race is on to develop batteries that are cheaper, safer, longer lasting, more energy dense, and easily recyclable. 

In a review article published in the March 2020 issue of Nature Nanotechnology, nanoengineers at the University of California San Diego offer a research roadmap that includes four challenges that need to be addressed in order to advance a promising class of batteries—all-solid-state batteries—to commercialization. This article summarizes the team's work to tackle these challenges over the past three years, which have been reported in several peer-reviewed articles published in various journals.

Unlike today's rechargeable lithium ion batteries, which contain liquid electrolytes that are often flammable, batteries with solid electrolytes offer the possibility of greater safety, in addition to a whole range of benefits including higher energy density.

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