A development from the USA promises to drive 400 kilometers and then charge in ten minutes.
Range fears with e-cars are said to be thanks to a battery development of the Pennsylvania State University (Penn State) disappear. The long-life lithium iron phosphate battery drives 400 kilometers (km) and should be charged in just ten minutes during the coffee break. According to the team, this is made possible by self-heating technology that brings the battery to the optimum operating temperature.
Heating is the key
“We have developed a pretty clever battery for mass-market e-cars at cost parity with combustion vehicles,” says Chao-Yang Wang, professor of chemical engineering, materials science and technology. This promises a range of 400 km, charging in ten minutes and a service life of over 3.2 million km, according to him and his colleagues. As the researchers report in “Nature Energy”, this is made possible by self-heating technology with which the battery quickly heats up to 60 degrees Celsius – the optimum temperature for loading and unloading.
The rapid heating of the battery to operating temperature enables a thin nickel foil. When a current flows, it heats up quickly due to electrical resistance and thus heats the interior of the battery. When the 60 degrees are reached, the battery is ready for operation with rapid charging or discharging. According to Wang’s team, this technology should make it possible to use cheap electrode materials for the battery – lithium iron phosphate and graphite – and safe electrolytes. According to Wang, this makes the battery cheap, light and compact – and therefore ideal for the mass market.
Quick start possible
According to Wang, relatively compact batteries should have a capacity of 40 kilowatt hours and an output of 300 kilowatts. An e-car would therefore be able to accelerate from zero to 100 in around three seconds and could therefore be driven like a Porsche. “This will change the environment and not just contribute luxury cars,” emphasizes the scientist. According to the researchers, the batteries would also be really competitive in terms of price. “Everyone should be able to afford e-cars.”
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The report was made by the Editor “pressetext.com” (Thomas Pichler) 2021 written – the article may not be redistributed without permission!
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