China’s SAIC will start producing second-generation solid-state batteries in 2026
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Hedef 400 Wh/kg
SAIC, the umbrella company of British-based MG, which also operates in our country, announced that it will start second-generation solid-state battery production in 2026. The battery in question will have a high energy density of 400 Wh/kg. For comparison, Chery’s recently established production line will first produce solid-state batteries with an energy density of 280 Wh/kg, but the value it wants to reach in 2026 is 600 Wh/kg.
When we look at the data announced by SAIC, we see that the energy density declared for the battery in question is 820 Wh/L in terms of volume. While these two values essentially express the energy storage capacity of the battery, 400 Wh/kg indicates the amount of energy the battery can store per mass. 820 Wh/L represents the amount of energy that can be stored per volume.
Another point that SAIC underlines about the solid state battery is safety. It is stated that the battery, which is stated to have protection against thermal leaks that result in fire or explosion, is resistant even to temperatures as high as 200 degrees. It is also stated that it will maintain 90 percent of its performance in cold weather conditions, which is one of the nightmares of electric vehicles.
Solid state batteries are safer and longer lasting
Although it varies depending on the intended use of batteries, it is important to reduce the mass or volume and increase the energy per mass/volume. Solid-state batteries stand out by having a solid electrolyte that allows reducing volume by 40 percent and mass by 25 percent. The risk of thermal leakage in solid-state batteries, which have a long life of up to 45 thousand cycles, is much lower than lithium batteries.
Apart from SAIC and Chery, which we mentioned in the news, many companies such as CATL, Great Power, Sunwoda, GWM, BYD and Honda are working on solid-state batteries.
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