MIT successfully developed a fast car recharging lithium-ion battery

Researchers at the Massachusetts Institute of technology have developed a surface treatment technology for recharging materials that uses new technology to charge lithium-ion batteries in seconds.

A lithium battery usually takes 6 minutes or more to complete charging. However, traditional lithium iron phosphate materials can increase the battery charging speed by 36 times(only 10 seconds) after surface treatment to form nanoscale grooves.

The lithium battery using this technology also has a high discharge speed, so it can be used for the acceleration of hybrid cars, so that the speed of hybrid cars can catch up with cars using gasoline engines.

MIT has patented the technology and licensed it to two companies. MIT researchers said that since the new technology is an improvement on existing lithium-ion batteries and does not require new materials, commercial products will be launched in two years.

Byoungwoo Kang, a doctoral student under the direction of Professor GerbrandCeder, said that "by treating the surface of lithium iron phosphate material, lithium ions can quickly move into the channel and be quickly transferred to the terminal."

A few years ago, when Ceder used a computer to simulate the materials used in lithium ion batteries, he found that lithium ions should be transmitted faster than previously thought. After further simulation studies, it was found that due to the limited number of channels on the surface of lithium iron phosphate material that can send lithium ions to the inside of the bulk material, the transmission speed of lithium ions during charging is limited.

Through years of experience, Kang and Ceder found that surface treatment of lithium iron phosphate materials to generate multiple grooves at intervals of only 5 nanometers can increase the speed of lithium ions by 36 times.

"By adopting this technology, battery charging will no longer be limited by the speed of lithium ions. This means that later lithium batteries can not only charge more quickly, but also discharge more quickly. "

Lithium-ion batteries for mobile phones and other small devices using the technology could be recharged in seconds, the researchers said. For the emerging electric car industry, this means that electric cars will be able to speed up to the same speed as gas cars.

Applying the charging technology to existing lithium battery substrates and launching the product will take two years, during which time home chargers for electric cars can be redesigned to handle the rapid transfer of energy. For electric vehicles, the charging speed of car batteries at home is limited not only by the battery itself but also by the power situation in the owner's home.

Tests to date have shown that lithium iron phosphate is as durable as bulk material after nanometer surface treatment, allowing repeated charging and discharge without affecting the charging effect due to ageing.

MIT research funding comes from the National Science Foundation, the Center for Materials Research Science and Engineering, and the US Department of Energy's advanced transportation battery program.

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