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RE: LeoThread 2025-04-06 04:45

in LeoFinance6 months ago

Fast charging, powerful EV battery: Breakthrough US model unlocks lithium failure secrets

During rapid charging of lithium-ion batteries, lithium plating can occur, where metallic lithium accumulates on the surface of the battery’s anode.

A researcher at the University of Wisconsin-Madison has developed a groundbreaking computational model that provides new insights into the causes of lithium-ion battery failure.

“Fast-charging lithium-ion batteries are ubiquitous, powering everything from cellphones and laptops to electric vehicles. They’re also notorious for overheating or catching fire,” said the university in a press release.

Assistant Professor Weiyu Li has created a model that elucidates the phenomenon of lithium plating. This is a key factor in the overheating and potential fires associated with fast-charging lithium-ion batteries.

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Lithium plating occurs when metallic lithium builds up on the surface of a battery’s anode during rapid charging.

“The mechanisms that trigger lithium plating, until now, have not been well understood,” added the press release.

Lithium plating accelerates battery degradation
Lithium-ion batteries’ ability to charge quickly is a significant advantage. However, the propensity for these batteries to overheat or even catch fire during rapid charging has raised safety concerns.

Lithium plating is a major contributing factor to these issues, as it can lead to short circuits and accelerated battery degradation.

“Lithium (Li) plating is a major challenge limiting the adoption of fast-charging Li-ion batteries,” asserted the researcher in a new study.