NASA's Breakthrough in Solid-state Batteries
Surging News 2022-12-17
Recently, the National Aeronautics and Space Administration (NASA) said that its research and development of solid state batteries for aviation has made a major breakthrough.
NASA introduced on its official website that the energy density of the solid state battery successfully developed by NASA has reached 500Wh/kg, almost twice the energy density of the best electric vehicle battery at present -- the energy density of Tesla's 4680 lithium battery is about 300Wh/kg.
In April 2021, NASA announced that its project (e Solid state Architecture Batteries for Enhanced Rechargeability and Safety, "SABERS") would develop solid state batteries for electric aircraft. Compared with the existing liquid electrolyte lithium ion batteries, they have higher energy density, smaller battery volume, can continue to be used after impact, and lower fire risk.
It is understood that NASA's solid state battery is a sulfur selenium battery. Its electrolyte material uses cheap and easily available sulfur. The battery also uses the "porous graphene" material previously developed by NASA, which has good conductivity and light weight. As the solid lithium battery has no liquid electrolyte, the risk of liquid fire and explosion is reduced.
In addition, unlike the single package of ordinary lithium-ion batteries, NASA's solid-state batteries stack the battery cells together in a single case, which reduces the battery weight by 30% - 40%.
"SABERS has tested new battery materials, which have made remarkable progress in discharging. In the past year, the team has successfully increased the discharge rate of the battery by 10 times, and then by 5 times, making researchers closer to the goal of providing power for large vehicles." NASA said in its press release.
It is reported that the electric aircraft and NASA's advanced air maneuver project will be the main beneficiaries of the new battery technology.
Issued by Tom, M&S, Dec. 17, 2022.
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