Japanese scientists have taken a major step

Solid-state batteries have become the great hope for the electric vehicle. Everything going around looks good: Its range is more than a thousand kilometersLess loading times and great longevity.

But for now, all this is just promises and expectations. Developments and developments continue, and Toyota has promised that it will have this technology on the road before the end of the decade. Nissan and the Chinese company want to follow the same path Janfeng lithium It confirms that it is already producing the first generation of this type of energy accumulator in large quantities.

As an intermediate step, NIO has demonstrated that trips of a thousand kilometers can indeed be achieved using a semi-solid battery. It is the first method, as the cost of these mass-produced batteries once they become part of the assembly line and their useful life remains to be verified.

In order to further one of the great promises, Japanese scientists have made an important advance to ensure a longer useful life.

Looking for stability

For a battery to be safer and more useful in the long term, the stability of its compounds is key. And in solid-state batteries, there is still a long way to go. So far, this has been one of her main problems.

Solid-state batteries particularly suffer from Dendritesthe growth of small structures that extend between the electrodes and which can develop over time Short circuits. Ultimately, the dendrites are lithium ions that can become trapped and accumulate on the anode surface when the battery is discharged.

What Japanese scientists have achieved is what he explained com. forumelectriccarswho chant Stady“A binary system consisting of optimized moieties of lithium titanate (Li2TiO3) and lithium vanadium dioxide (LiVO)2.”

Explained in simpler terms, this means that the material obtained provides a high ability to… Insert and extract It contains a large amount of lithium ions without undergoing major transformations or changes in its size. The ability to discharge the largest possible amount of lithium ions, as we have seen, is essential to increasing the useful life of the battery.

This discovery strengthens the hope of obtaining better energy accumulators in the future. “We expect that a truly dimensionally stable material, one that retains its volume in the electrochemical cycle, can be developed by further optimizing the chemical composition of the electrolyte,” they collect in the media.

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Photos | Robert Linder