Researchers at Vanderbilt University have gained new insight into the nanoscale workings of Lithium Ion batteries, a discovery that could speed the development of batteries that can be recharged in seconds.

The team of scientists spent the last 7 months investigating batteries containing quantum dots made of iron pyrite, also known as “fool’s gold.”

Quantum dots are particles just a few tens of atoms wide, and researchers already know that their use in batteries allows for very fast charging. But they can also mean a death sentence for the battery.

“When the particles get very small, they begin to chemically react with the electrolytes and so the battery can only charge and discharge a few times,” said Cary Pint, an assistant professor of mechanical engineering at Vanderbilt.

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