Engineers at the University of California San Diego have developed a breakthrough in electrolyte chemistry that enables lithium batteries to run at temperatures as low as -60 degrees Celsius with excellent performance. The new electrolytes also enable electrochemical capacitors to run as low as -80 degrees Celsius — their current low-temperature limit is -40 degrees Celsius. While the technology enables extreme low-temperature operation, high performance at room temperature is still maintained. The new electrolyte chemistry could also increase the energy density and improve the safety of lithium batteries and electrochemical capacitors.
The work will be published online by the journal Science.
The technology could allow electric vehicles in cold climates to travel farther on a single charge. It could also be used to power craft in the extreme cold, such as high atmosphere WiFi drones and weather balloons, satellites, interplanetary rovers and other aerospace applications.
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