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DOE OSTI · 3029710

Strategic Melamine Coating on Lithium Metal for Li 3 N-Rich Solid Electrolyte Interphase and Improved Battery Cycling Stability

Abstract

The practical applications of lithium (Li) metal batteries (LMBs) are limited by challenges such as dendrite formation and unstable solid electrolyte interphase (SEI), especially at higher C-rates. Here, this study introduces melamine-coated Li metal anodes (LMAs), forming a Li 3 N-rich SEI layer that improves ionic conductivity and mechanical stability. The optimized melamine-coated LMA demonstrated uniform coverage resulting in denser Li deposition, nearly doubled cycle life (~148 cycles at 0.5 C, 1C = 4.1 mA cm -2 ), compared to Bare-Li. These findings emphasize that coating materials-induced beneficial SEI components could lead to improvement of LMB performance.

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BibTeXRIS

Kim, Ju-Myung [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)] (ORCID:0000000308511959), Engelhard, Mark H. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)] (ORCID:0000000255430812), Park, Hyoju [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)], Ahmed, Ridwan A. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)], Baar, Kevin [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)], Zhang, Ji-Guang [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)] (ORCID:0000000173434609), Xu, Wu [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)] (ORCID:0000000226858684). 2026-03-19. Strategic Melamine Coating on Lithium Metal for Li 3 N-Rich Solid Electrolyte Interphase and Improved Battery Cycling Stability. https://doi.org/10.1021/acsaem.6c00265

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