Sunwoda and CATL Make Advances in Solid-State Batteries

TapTechNews June 13th news, today, Sunwoda stated on the investor interaction platform that the solid-state battery company has been conducting research and development and layout since 2015, and has planned the first-generation 400 Wh/kg and the second-generation 500 Wh/kg all-solid-state batteries.

Among them, the latest ampere-hour level sample of the first-generation all-solid-state battery can achieve more than 1000 stable cycles; The second-generation laboratory sample has reached the energy density target of 500 Wh/kg (Energy density is an indicator of concern, but the lifespan and safety of the product cannot be ignored). As for when the new product will be mass-produced, Sunwoda has not disclosed for the time being.

TapTechNews noticed that the energy density of 500 Wh/kg can be said to be a development direction of future battery products.

Last April, CATL released the condensed state battery with an energy density also reaching 500 Wh/kg, far exceeding lithium ternary and lithium iron phosphate batteries, and meeting the requirements of civil aviation. Wu Kai, the chief scientist of CATL, said that this is an important and huge breakthrough of CATL on the battery. The condensed state battery has the characteristics of high safety, strong reliability, and long cycle life, and can be mass-produced quickly, and the vehicle-level products will also be launched next.

For reference, the energy density of ternary lithium batteries is generally 180-230 Wh/kg, the energy density of BYD's blade battery is 140 Wh/kg, and the theoretical energy density of Tesla's 4680 battery can reach more than 300 Wh/kg.

In addition, according to the statement of Tesla founder Elon Musk, an energy density of 500 Wh/kg is sufficient for application in aircraft, and the energy density of the solid-state battery developed by NASA has reached this energy density.