The future of solid state batteries lies in water

Among the limitations that electric vehicles must face is the relatively limited range compared to gasoline and diesel vehicles. This limitation can only be broken by making solid state batteries more efficient than those currently used.

One of the companies that has been working in this direction for several years is Samsung SDI, committed to developing a solid-state batterycapable of offering a range of more than 1,000 kilometers, fast charges and a longer useful life.

The solid battery with these characteristics could begin to be marketed within three years, if the expectations of the researchers of this South Korean company are met. In it currently They are experimenting with a production method that uses a seemingly contradictory element: water.

Using pressurized water to speed up production

The development of the solid battery has taken Samsung SDI more than 10 years of research, with which it has obtained more than 50 patents (it is not the only group of researchers, nor the only company that works on this type of batteries). Now it has begun to focus on more efficient ways to produce this battery and that can be used in a production line.

To reach this goal have created the “S Line”, a production method that includes the use of high-pressure waterto achieve the high levels of pressing required in the production of the battery.

Samsung batteries

In order for solid batteries to work, The pressing of the materials must be done quickly and with very high temperatures. It is about ensuring that the core materials are structured in the most solid way possible, with the electrolyte sunk as deeply as the anode and cathode, and a pressure around 100 MPa (megapascal). The latter is a pressure measurement that is used in structural engineering and material resistance).

To do this, the Samsung team uses an isotactic press equipped with rollers, which can exert forces close to 600 MPa. In this sense, an important part of the process consists of pour the battery cells into a tank of watera method that contributes to improving the quality of the process.

The entire procedure is carried out at the Samsung research centerin Suwon, and in this phase it takes around 30 minutes, a time that they must cut in half so that it is similar to what it takes to build other batteries.

Samsung batteries

Solid state batteries in 2027

Once they refine this part of the project and other details, Samsung will build another production line at the company’s plant in Ulsan, southeast of Seoul, and They hope to begin marketing these batteries in 2027.

Solid batteries differ from lithium batteries in that the latter use liquid electrolyte between the anode and cathode to facilitate the flow of ions. Solid ones, on the other hand, only use solid materials compressed at high pressure, which makes them safer (less susceptible to fires, like lithium ones), with higher energy density and more durable.

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