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Researchers from China and Germany have made an important step forward in creating lithium-sulfur batteries. The technology proposed by them allows the battery to retain more than 80% of its initial capacity after 25,000 charge-discharge cycles — this is ten times greater than the resource of conventional lithium-ion batteries.
What makes this battery a real breakthrough?
- Unprecedented durability — withstands 25,000 cycles without a significant drop in productivity.
- Extremely fast charging — at temperatures of 50°C, the capacity can be filled in just 60 seconds.
- High stability — solid electrolyte does not allow intermediate sulfur compounds to dissolve, which prevents charge loss.
- Cheapness and environmental friendliness — sulfur is inexpensive and is a widely available raw material.
How did you manage to achieve such indicators?
- They used a solid electrolyte — it keeps the sulfur stable and fights against self-discharge.
- They developed a new warehouse — a special glass-like mixture based on boron, sulfur, lithium, phosphorus and iodine.
- They added iodine — it accelerated the transfer of electrons and increased the overall efficiency of the battery.
Where can it be used?
If the technology is launched in serial production, lithium-sulfur batteries will change many industries:
- Electric cars — almost instantaneous charging and reliable robot even in difficult weather conditions.
- Renewable energy - solar panels and wind turbines will help to accumulate energy more efficiently.
- Gadgets — a much longer autonomous robot without recharges.
What will need to be improved?
Despite impressive successes, scientists have not yet managed to solve the problem of energy density - they are still working on it.