Battery activity slows down at lower temperatures than humans are comfortable with. That’s because the ions move more slowly between the electrodes, much as we linger in bed on chilly winter mornings. Chao-Yang Wang, and his colleagues at Pennsylvania State University in University Park decided to try heating lithium batteries to 60 °C to see what happened.
Heating Lithium Batteries Eliminated Plating
The Penn State scientists heated their lithium batteries to 60°C before fast charging. The batteries topped up in 10 minutes but something even more amazing happened.
Charging lithium batteries at high rates usually shortens battery life by encouraging the lithium to plate on the anode. This phenomenon blocks the flow of ions progressively, and eventually renders the battery useless according to Nature magazine. “We demonstrated that we can charge an electrical vehicle in ten minutes for a 200 to 300 mile range. And we can do this maintaining 2,500 charging cycles, or the equivalent of half a million miles of travel,” Chao-Yang Wang added.
The Roots of This Remarkable Discovery
However, This Is ‘Forbidden Area’ for Now
Writing on the Pennsylvania State University website he explains heating lithium batteries is not a practical solution. “Taking this battery to the extreme of 60 °C is forbidden in the battery arena. That’s because it is too high and considered a danger to the materials and would shorten battery life drastically.”
However, things could be different if it were possible to rapidly chill the battery after charging. The Pennsylvania State University researcher envisages rapid cooling through systems incorporated in the host EV. If he is correct, then this could end range anxiety according to Reuters news agency.
The U.S. Department of Energy supported this research. The work deserves repeating several times, and if successful taking to the next stage.
Related
You Can Push Lithium Ions Too Far Says Rice
Battery Chemistry and Electronics Facts
Preview Image: Boron nitride nanosheets insulate barium nitrate central layer
Video Share Link: https://youtu.be/ppYGWnYgUrc
