Electric cars: an innovation that could change the future of batteries

The quest for better performance for electric vehicles takes a new step. A recent breakthrough is already generating a lot of interest and could well mark a turning point for future batteries.

A solid electrolyte at the heart of innovation

We often hear that batteries are the Achilles heel of electric cars. This is a relevant remark because they are effectively limited by their autonomy, their resistance to cold and their recharge time.

But research is progressing quickly. Researchers are doubling their ingenuity to make the batteries more efficient and more resistant. The latest discovery is particularly promising.

Researchers have developed a hydrogen battery capable of operating at temperatures four times colder than conventional models.

Specifically, this new model can operate at around 90°C.

In comparison, current solid hydrogen storage methods require temperatures between 300 and 400°C.

This temperature constraint explains why solid-state hydrogen batteries have never gone beyond the research stage.

We also speak of solid storage because the hydrogen is integrated into a solid material instead of being contained in the form of gas.

This approach avoids the need for high pressure tanks in cars and allows more energy to be stored in a more compact volume.

The new battery developed by the researchers manages to exploit the entire theoretical storage capacity. In other words, it uses as much as possible all the hydrogen that its material can contain.

The secret to this breakthrough lies in the solid electrolyte, a material that facilitates the circulation of ions. It therefore allows the battery to operate efficiently without requiring extreme temperatures.

Thanks to the solid electrolyte, the battery can store and release hydrogen on demand, all with a capacity of 2,030 mAh per gram. To give you an idea, current lithium-ion batteries generally offer between 154 and 203 mAh.

This advance could pave the way for wider use of hydrogen as a daily energy source, especially in electric vehicles. It could even play a major role in the batteries of tomorrow.

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