Scientists Use A Magnetic Material To Monitor Battery Life

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A new study demonstrates how a magnetic substance may be used to monitor 

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how long a rechargeable battery has left before it has to be recharged.

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The experiment was conducted by Shenqiang Ren, a scientist and engineer from the University at Buffalo. 

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Lithium ions flow from one side of the battery to the other as lithium-ion batteries charge and drain.

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 Ren’s team designed a lithium-ion battery with a peculiar substance at one end: a compound whose magnetic

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 property varies when lithium ions enter or exit it. According to Ren, this allows for the measurement 

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of the battery’s charge level by measuring changes in the material’s magnetic.

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“The main goal of this project was working on the magneto-ionics, which uses ions to control the magnetism of materials. 

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As the lithium ions travel in or out of the material we are using, the material will change its magnetization.

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