Kyung Hee University Research Team Identifies Innovative Solutions for Lithium Metal Batteries

Mechanical Pressure Affects Lithium Metal Batteries

Professor Kim Doo-ho's research team from the Department of Mechanical Engineering at Kyung Hee University has identified that mechanical pressure can influence dendrite formation within lithium metal batteries.

According to Kyung Hee University on the 4th, this study was conducted in collaboration with Professor Choi Jun-myeong's research team from the Department of Mechanical Engineering at Hanyang University, and was published in the September issue of the internationally renowned journal Advanced Energy Materials. This research proposes a new method to enhance the stability and efficiency of lithium metal batteries, serving as a foundation for the advancement of lithium metal battery technology.

To suppress dendrite formation, the research team introduced computational science data-driven multi-scale analysis methods and machine learning into their study.

The team conducted analyses at various scales, from the atomic level to the microscale. At the atomic level, they tracked changes in lithium bond lengths due to compression of lithium metal materials. Additionally, through material data-driven machine learning, they predicted thermodynamic energy changes to forecast the (non)uniformity tendencies of dendrites.

At the microscale, molecular dynamics simulations were used to verify dendrite formation tendencies according to thermodynamic energy changes, proposing a new design method to control dendrite growth inside lithium metal and improve battery stability.

Professor Kim explained the significance of the research, stating, "Since we have proposed a design strategy to suppress dendrite formation, it will be utilized in various secondary battery applications."

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