Lithium metal battery lifespan extended to record levels

Researchers have extended the life of the lithium metal battery to 600 cycles, which means it can be fully charged and discharged 600 times over its lifetime.

Researchers have increased the lifespan of a lithium metal battery for electric vehicles to record levels, important for the future of electric vehicles. It is planned to use batteries of this type in them.

Lithium metal batteries are one of the global environmental solutions for electric vehicles. This battery contains almost twice as much energy as its lithium-ion counterparts and is also lighter. These two qualities in the long term will make an electric car that covers distances faster and easier and uses less energy.

However, there is a problem: lithium metal batteries fail faster than lithium-ion batteries.

Now, a team of scientists from the US Department of Energy’s Pacific Northwest National Laboratory has created a lithium metal battery that lasts 600 cycles. This means it can be fully charged and discharged 600 times.

In comparison, four years ago, a lithium metal battery could only last 50 cycles, two years later that figure has grown to 200.

The team found a way to increase battery life: They took an unexpected approach. Instead of using anodes with a large amount of lithium for the development, very thin strips of lithium, only 20 microns wide, are taken for this role, they are thinner than a human hair.

The resulting lithium metal battery has an energy density of 350 watt-hours per kilogram (Wh / kg) and lasts longer.

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Alexandr Ivanov earned his Licentiate Engineer in Systems and Computer Engineering from the Free International University of Moldova. Since 2013, Alexandr has been working as a freelance web programmer.
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Alexandr Ivanov

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