Low-res solid-state batteries from Japan


Researchers from Tohoku University and Tokyo Tech developed solid-state batteries with low resistance at the electrode and solid electrolyte interface. They showed great electrochemical properties that surpass those of traditional Li-ion batteries.

The scientists from Tokyo Tech and Tohoku University fabricated their solid-state batteries using LNMO by stacking various layers via thin-film deposition methods.

The team then achieved a very low electrolyte/electrode interface resistance of 7.6 Ω cm2. The researchers also observed spontaneous migration of Li-ions from the solid electrolyte to the positive electrode after the formation of the electrolyte/electrode interface.

Finally, they were able to demonstrate stable fast charging and discharging of the solid-state Li batteries, managing to charge/discharge half the battery within just one second. Moreover, the cyclability of the battery showed no degradation in performance even after 100 charge/discharge cycles.

The research team hopes that these results will lead to the development of high-performance solid-state batteries.



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