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News Link • Science, Medicine and Technology

Lowering resistance 100 times brings all solid state batteries closer

• https://www.nextbigfuture.com, by brian wang

All-solid-state batteries are new type of Li-ion battery that should be potentially safer and have higher energy densities.

Resistance at the electrode/solid electrolyte interface has been too high which prevents fast charging and discharging.

The resistance of this interface, verified using electrochemical impedance spectroscopy, was 7.6 Ωcm2, two orders of magnitude smaller than that of previous LMNO-based all-solid-state batteries and even smaller than that of liquid-electrolyte-based Li-ion batteries using LNMO. These batteries also displayed fast charging and discharging, managing to charge/discharge half the battery within just one second. Moreover, the cyclability of the battery was also excellent, showing no degradation in performance even after 100 charge/discharge cycles.

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