Solid-State Batteries Explained: Why Everyone Is Talking About Them
Safer, denser and faster to charge: solid-state batteries are presented as the next big step. Where do things stand?
In a conventional lithium-ion battery, ions travel through a liquid electrolyte. A solid-state battery replaces that liquid with a solid material. It is a change that could reshape electric cars.
The promises
- Safety: a solid electrolyte is far less flammable.
- Density: a lithium-metal anode could store more energy.
- Charging: potentially shorter charging times.
The challenges
Producing these cells at scale, at a reasonable cost and with a long lifespan, is still difficult. The interfaces between solid materials are hard to control, and manufacturing processes are still being developed.
What to remember
Many carmakers and cell manufacturers are working on the technology. The first applications are expected to arrive gradually, starting with high-end models. Meanwhile, today’s batteries keep improving in both range and price.
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