Samsung’s Advanced Institute of Technology (SAIT) and Samsung’s R&D Institute of Japan have developed an all-solid-state battery that that features a lifecycle of more than 1,000 charges and that could allow an electric vehicle (EV) to travel up to about 500 miles on a single charge.
All-solid-state batteries support greater energy density compared to lithium-ion batteries, which are the most widely accepted batteries in the world, powering both EVs and mobile devices.
However, lithium-ion batteries typically use liquid electrolytes, which could lead to the batteries becoming unstable and even catching fire. Meanwhile, all-solid-state batteries use solid electrolytes, but the lithium metal anodes are prone to trigger the growth of dendrites that can lead to undesirable side effects, reducing the lifespan and safety of the battery.
As such, the Samsung battery uses a silver-carbon composite layer as the anode inside the prototype pouch cell and it supports larger capacity, longer cycle life and overall safety. The nanocomposite layer, which measures just 5 micrometers, enabled the team to reduce anode thickness and increase energy density up to 900 Wh/L. This also made the prototype about 50% smaller by volume than a conventional lithium-ion battery.
The full research can be found in the journal Nature Energy.
