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Multifactorial engineering of biomimetic membranes for batteries with multiple high-performance parameters

2022    Wang, Mingqiang; Emre, Ahmet E.; Kim, Ji-Young; Huang, Yiting; Liu, Li; Cecen, Volkan; Huang, Yudong; Kotov, Nicholas A.

Lithium-sulfur batteries have a high specific capacity, but lithium polysulfide diffusion (LPS) and dendrite growth reduce their cycle life. Here, the authors show a biomimetic aramid nanofiber membrane for effectively suppressing LPS diffusion as well as lithium dendrites while allowing lithium ions to be transported. The membranes resists performance degradation at high temperatures and can be produced at scale by Kevlar recycling.