Research will help extend EV battery life by up to 30%, with slow decay

 – EV Updates 2022

Research will help extend EV battery life by up to 30%, with slow decay – EV Updates 2022

Research will help extend EV battery life by up to 30%, with slow decay

– EV Updates 2022

Researchers at the SLAC National Accelerator Laboratory and Stanford University in the Department of Energy say they have found a way to “revitalize” lithium-ion batteries, which will extend their useful life by almost 30%.

Research points to a new way to slow down battery depletion. As lithium-ion batteries increase charge / discharge cycles, they accumulate “islands” of lithium that are disconnected from the electrodes, thus contributing to energy savings, the researchers explained in a December 22 issue of the journal. Natural.

The researchers found that these lithium bits could be moved back toward the electrodes, re-establishing electrical connection and allowing that lithium to continue to be used.

Battery production at the Mercedes-Benz plant in Heidelfingen, Germany

Battery production at the Mercedes-Benz plant in Heidelfingen, Germany

The study reported that in a test cell containing a lithium-nickel-manganese-cobalt oxide (NMC) cation and a lithium anode, the isolated lithium battery moved with cycles. The lithium moved towards the cathode while charging the cell. When discharged, it moved towards the anode. With enough movement, it will eventually touch the anode and reconnect.

The inclusion of a high-current discharge step in the charging protocol has reached the desired momentum, Fang Liu, a Stanford postdoctoral colleague and lead author of the study, said in a statement. It points to a way to extend battery life by modifying the charging protocol, and also has implications for the development of lithium-metal batteries, he said.

However, promising laboratory research does not need to be translated into the real world. For example, if any battery companies follow such a strategy, they must prove for sure that it does not increase the chances of a battery fire.

GM Ultium Battery - Cell Stocking

GM Ultium Battery – Cell Stocking

Reconnecting the lithium “islands” may or may not be a viable solution, but is focusing more on battery decay as EV production increases.

In 2021, the California Air Resources Board (CARB) proposed degradation limits, which require all 2026 and later battery-electric vehicles sold in the state to be 80% of their certified range for 15 years or 150,000 miles.

Automakers are also beginning to set strong life goals. Toyota aims for 10% degradation in 10 years, while Rivian offers a good warranty against degradation.

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Research will help extend EV battery life by up to 30%, with slow decay

– EV Updates 2022

#Research #extend #battery #life #slow #decay

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