Market analysis firm FutureBridge expects that cost-parity between Li-ion and solid-state batteries could be achieved in another five years. Solid-state batteries (SSBs) promise a leap forward, compared to incremental gains from Lithium-ion batteries (LiBs), with improved safety, higher energy density, faster charging times, and longer life. However, today their commercialization is limited to micro-scale applications outside mobility, such as medical devices. The development of large-sized SSBs for mobility applications is still in its early stages. Solid Power, Quantum Scape, and ilika forecast at least five years for SSBs to enter the automotive market. 2020 saw a growing number of research projects to improve cycle life, energy density, and ionic conductivity—the main three challenges for mass-adoption of SSBs for EVs. For example: KIST presented a sulfide-based superionic conductor that improves the ionic conductivity of solid electrolytes of SSBs. Samsung’s silver-carbon composite layer can overcome dendrites in Li-metal anodes of SSBs. […]