Researchers increase performance of lithium-ion batteries

Researchers at the SLAC-Stanford Battery Center have discovered a new method to extend the lifespan of lithium-ion batteries by up to 50 percent. The background.

Researchers at the SLAC-Stanford Battery Center have discovered a new method to significantly increase the performance of lithium-ion batteries. The finding: If manufacturers charge the batteries with a high current before delivery, this can reduce the charging time by thirty times. At the same time, the service life increases by around 50 percent.

The first charge therefore seems to be crucial in determining the performance of lithium-ion batteries, as it determines how many charge and discharge cycles a battery can handle before it deteriorates.

Lithium-ion batteries: Lifespan could increase worldwide

The research team used machine learning systems to identify specific changes in the battery electrodes. The results then served as a basis for exploring approaches that could lead to improved performance. The new approach appears to be invaluable for battery manufacturers.

This is because it could enable the design of more efficient production processes. The study also shows that the method is not only suitable for batteries in electric vehicles and the power grid. It can apparently also be transferred to other technologies.

Lithium loss creates a protective layer around the electrode

A key advantage of the method is that a fast charging process results in a higher loss of lithium during the first charge. However, this is a positive because the loss forms a protective layer on the negative electrode. This protects the battery from harmful side reactions and thus extends its lifespan. The discovery could fundamentally change the way we manufacture and charge batteries in the future.

In collaboration with the Toyota Research Institute, an approach was developed that could have far-reaching effects on battery production. The application should not only reduce costs for many manufacturers, but also significantly shorten production times. This would be a major step forward for the entire industry and could accelerate the transition to a more sustainable energy future.

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