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Industry

MIT finds clue to key hurdle in all-solid-state batteries

A study found that a key cause of short circuits in all-solid-state batteries lies in grain boundaries inside solid electrolytes. Researchers from the Massachusetts Institute of Technology and the Technical University of Munich identified a main driver of lithium-metal dendrite growth and proposed a process solution to reduce it. Using AI and analysis methods, they tracked current flow and adjusted electrolyte processing to cut damage and energy loss. They said current density rose by more than 300 percent in tests.

Industry

Electrode restoration tech emerges that recovers up to 95 percent of used lithium-ion battery capacity

A technology has been developed to restore the performance of electrodes from used lithium-ion batteries without dismantling or melting them. Researchers expect the method can recover up to 95 percent of battery capacity and more than halve manufacturing costs for refurbished batteries. The approach regenerates electrodes directly on their metal current collectors by removing the SEI layer using a DMI solvent and applying a recovery process. It was tested mainly on EV batteries with 70 to 80 percent state of health.

Industry

KITECH develops sulfide solid electrolyte material for all-solid-state batteries

The Korea Institute of Industrial Technology said on Tuesday it has developed a sulfide-based solid electrolyte material for all-solid-state batteries that improves both ionic conductivity and air stability. A research team led by senior researcher Kim Tae-hyo said the new material raised ionic conductivity 77-fold and reduced toxic hydrogen sulfide generation by 40 percent versus existing material. It also improved stability with lithium metal and boosted initial discharge capacity in a test cell.