Advanced Polymer-Inorganic Hybrid Protective Layers for Enhanced Durability of Lithium Metal Batteries
발표자
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초록
내용
The lithium metal electrode, with its high specific capacity (3,860 mAh g-1) and low redox potential (-3.04 V vs. SHE), is promising for high-energy-density batteries. However, lithium dendrite growth during charge/discharge cycles challenges performance and safety. This study introduces a conductive organic-inorganic hybrid protective layer using a solvent-free transfer-printing technique to enhance cycling stability. A dual-layer coating of ceramic (Al2O3) and lithophilic-metal (Au) addresses dendrite formation. The ceramic layer inhibits dendrite growth, while the Au layer ensures uniform lithium-ion deposition, minimizing internal resistance. The coating demonstrated outstanding performance in Li/Li symmetric, Li-Cu, and NCM811/Li cell tests, with >85% capacity retention and >99.8% Coulombic efficiency after 150 cycles.