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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah
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"This project aims to develop the next generation of lithium metal batteries," said Donghai Wang, professor of mechanical engineering at Penn State and principal investigator of the project. "Lithium metal has been tried in batteries for decades, but there are some fundamental problems that have hindered its development."

 

Under additional strain, such as the fast charging method required for electric vehicles, lithium-ion batteries (Li) are susceptible to dendrite growth (needle-like structures), which shortens the battery cycle life and may cause safety threats such as fire or explosion. "Our approach uses a polymer at the lithium metal interface. The material is a porous sponge that not only allows lithium ions to transfer, but also inhibits lithium ion deterioration, allowing the metal coating to not grow dendrites even under low temperature and fast charging conditions," said Wang.

 

This research could make more powerful and stable metal battery technology an integral part of daily life. "Used in electric vehicles, this metal battery can increase their driving range, and it can also provide longer-lasting batteries for smartphones," said Wang.

 

In the future, the research team will explore its practical application in large battery cells to verify the advantages and feasibility of the technology. "We want to push this technology forward, and with this research we are pretty sure we can double the lifespan of lithium metal batteries," said Professor Wang.


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