Penn State University scientists have developed an EV battery that can charge in 10 minutes
, and thus a bigger impact on the landscape, and a larger environmental footprint. The reason for all that is that EV batteries don’t charge very fast, so the assumption is that people will only buy cars that they can drive for a long time without the inconvenience of a long charging stop. But that paradigm might be about to change.
A typical EV takes around 30 minutes or more to charge with a high-powered DC fast charger. But today researchers at Penn State Universityrevealing they have developed an EV battery that, crucially, can charge up to about 70% capacity in roughly 10 minutes. The technology can work for any size of battery, but perhaps the biggest benefit is that it will enable automakers to sell EVs with smaller batteries without triggering consumers’ range anxiety.
Wang is something of a rarity in the world of battery engineering—he’s been in the field since the early 1990s, contributing work on GM’s groundbreaking EV1, and his papers stretching back through the decades have been referenced by hundreds of other studies. About seven years ago, Wang and his team started looking into the question of how to make batteries charge faster.
One other potential method involved heat. Batteries use chemical reactions to store energy, and those reactions are susceptible to temperature. When it gets cold, those reactions slow down, which is one of the reasons EV rangein cold weather. Wang and his team started looking into doing the opposite, seeing if by warming essential components to the right temperature they could stimulate those reactions to work faster. As it turned out, the approach worked better than they could have expected.
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