Active-Oxygen-Enhanced Homogeneous Nucleation of Lithium Metal on Ultrathin Layered Double Hydroxide

摘要

The development of safe lithium-metal anodes is crucial for the next-generation rechargeable batteries. To stabilize Li metal anodes, pre-planting Li nucleation seeds on lithiophilic substrates is an efficient strategy to regulate initial nucleation process of Li metal. Now, activated ultrathin layered double hydroxide (U-LDHs) are reported as a promising lithiophilic 2D material to realize the uniform deposition of Li metal. The experimental studies and DFT calculations reveal that the active oxygen on U-LDHs provides abundant atomic-scale active sites for Li homogeneous nucleation and plating. Moreover, the lithiophilic properties of active oxygen is also related to its coordination environments: This work opens up an opportunity to more accurate regulation and understanding of Li nucleation from atomic-scale based on 2D ultrathin materials.