A
Anonymous
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It's a few months old, but I hadn't seen it here before. Here's a plain-language summary:
Oct. 30 (UPI) -- Engineers at Pennsylvania State University have developed a new lithium ion battery that can charge an electric vehicle in 10 minutes. The technology could offer electric cars an additional 200 miles of driving range, alleviating concerns of becoming stranded on long trips.
In order to encourage the adoption of electric vehicles by the average driver, electric vehicle makers have been trying to find ways to charge lithium ion batteries more quickly.
When the lithium ion batteries currently used in electric vehicles are charged at rapid speeds -- quickly taking on 400 kilowatts of energy -- they become vulnerable to lithium plating, the formation and growth of metallic lithium around the anode. Lithium plating diminishes the performance and shrinks the lifespan of lithium ion batteries.
Researchers at Penn State realized they could avoid this pitfall by charging batteries at elevated temperatures. Most batteries charge and discharge at the same temperature. In the lab, engineers charged batteries at a temperature of 60 degrees Celsius, or 140 degrees Fahrenheit. The batteries quickly cooled when discharged.
from https://www.upi.com/Science_News/2019/10/30/New-hot-charging-lithium-ion-battery-can-charge-an-electric-car-in-10-minutes/1971572451708/
Joule paper: https://sci-hub.tw/https://www.cell.com/joule/fulltext/S2542-4351(19)30481-7
Oct. 30 (UPI) -- Engineers at Pennsylvania State University have developed a new lithium ion battery that can charge an electric vehicle in 10 minutes. The technology could offer electric cars an additional 200 miles of driving range, alleviating concerns of becoming stranded on long trips.
In order to encourage the adoption of electric vehicles by the average driver, electric vehicle makers have been trying to find ways to charge lithium ion batteries more quickly.
When the lithium ion batteries currently used in electric vehicles are charged at rapid speeds -- quickly taking on 400 kilowatts of energy -- they become vulnerable to lithium plating, the formation and growth of metallic lithium around the anode. Lithium plating diminishes the performance and shrinks the lifespan of lithium ion batteries.
Researchers at Penn State realized they could avoid this pitfall by charging batteries at elevated temperatures. Most batteries charge and discharge at the same temperature. In the lab, engineers charged batteries at a temperature of 60 degrees Celsius, or 140 degrees Fahrenheit. The batteries quickly cooled when discharged.
from https://www.upi.com/Science_News/2019/10/30/New-hot-charging-lithium-ion-battery-can-charge-an-electric-car-in-10-minutes/1971572451708/
Joule paper: https://sci-hub.tw/https://www.cell.com/joule/fulltext/S2542-4351(19)30481-7