"The other day, I reviewed a power bank with a solid-state battery at its core, rather than a lithium-ion battery. Solid-state batteries offer increased energy density, improved safety, and a longer lifespan. To demonstrate the improved safety profile, I opened the power bank and stabbed a screwdriver into a fully charged battery; apart from a few wisps of smoke, nothing happened."
"Solid-state batteries are next-generation rechargeable batteries that use solid materials for the electrolyte (the material that carries the electric charge between the battery's anode and cathode), rather than the typical liquid or gel electrolytes found in lithium-ion batteries. The electrolytes in lithium-ion batteries are typically lithium salts dissolved in a cocktail of noxious and flammable organic solvents, whereas in solid-state batteries, various dry ceramics are used."
Solid-state batteries replace liquid or gel electrolytes with solid materials, typically dry ceramics, improving safety by removing flammable solvents. Solid electrolytes enable higher energy density, faster charging, and greater cycle life compared with conventional lithium-ion cells. A puncture test on a solid-state cell produced only minor smoke, illustrating the stronger safety profile. Despite clear technical advantages, adoption is constrained by high costs, limited large-scale manufacturing capability, and an existing global supply chain built around lithium-ion production. Significant materials innovation and industrial scaling are required before solid-state batteries can meet worldwide demand.
Read at ZDNET
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