A battery that includes tiny heaters inside can be charged to 70% in just 11 minutes.
Electric cars with self- heating batteries can charge quickly.
Think A is a stock photo.
The battery can charge to 70% in 11 minutes. The design could allow electric cars to be re-charged at a faster rate than petrol ones.
It can cause damage and even fires if you heat the batteries.
It would take 45 minutes to charge an electric car using existing fast-charging technology, but Brian McCarthy and his colleagues have come up with a design that heats up safely, so an electric car could be charged in just 11 minutes.
The battery's capacity is limited by the fact that it is easier to push lithium ion across a shorter distance during fast-charging than it is to charge it.
McCarthy's team used stacks of anodes and cathodes to create a higher energy density as well as fast charging.
In tests, the researchers heated and charged a 265 watt-hour battery to 70 per cent in 11 minutes at 65C (149F), and showed that it could accept the equivalent of about 320 kilometres of range.
Electric car batteries should not be charged more than 80 percent for general use.
McCarthy thinks the battery design could make electric cars more practical.
If you could produce battery packs that were faster-charging, and so let you do long-distance trips in similar time to having one giant battery, you could imagine auto-makers making maybe three or two battery packs with the same amount of materials. You get more electric vehicles into the system quicker.
The journal is titled Nature.
There are more on this topic.
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