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

Key Points

• The aim is to improve the cycling stability and performance of lithium metal batteries by using a melamine coating on the anodes.
• Introduced melamine-coated lithium metal anodes (LMAs) to form a lithium nitride-rich solid electrolyte interphase (SEI).
• Evaluated ionic conductivity and mechanical stability of the SEI layer.
• Compared cycle life of melamine-coated LMAs to bare lithium anodes at higher C-rates.
• The melamine-coated LMAs showed a nearly doubled cycle life with approximately 148 cycles at 0.5 C.
• Uniform coverage of the coating led to denser lithium deposition.
• The coating improved both the mechanical stability and ionic conductivity of the SEI.

Abstract