Oak Ridge National Laboratory's new EV battery chemistry can sustain 10-minute fast charging for 1500 cycles.
ORNL’s team claims to have developed a new type of electrolyte that enables fast charging over a sustained time period. The team developed “new formulations of lithium salts with carbonate solvents to form an electrolyte” for an improved ion flow over time and the ability to withstand the heat generated by the currents during fast charging.
“We found this new electrolyte formulation basically triples the Department of Energy’s target for the lifespan of an extreme-fast-charging battery,” ORNL’s Zhijia Du said. The high-performance electrolyte consists of “lithium bisimide , lithium hexafluorophosphate , and carbonates in, two amp hour pouch cells.”
The formula apparently displayed excellent electrochemical stability at a high charging rate of 6C, which translates to one-sixth of an hour, or 10 ten minutes. However, there are many unanswered questions. It’s not clear how much this chemistry would cost to incorporate in an EV battery, and if it can ever be democratized.new findings reveal no significant difference in battery degradationSome OEMs appear to be in the advanced stages of battery development.
. One of these lithium-ion batteries would be capable of delivering 497 miles of range, and attain 10-80 percent state of charge in 20 minutes.
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