Lithium metal batteries are capable of revolutionizing the battery marketplace for electrical vehicles, owing to the high capacity and low voltage offered by Li metal. Current exploitation of Li metal electrodes, however, is plagued by their exhaustive parasitic reactions with liquid electrolytes and dendritic growth, which pose concerns to both cell performance and safety. We demonstrate that a hybrid membrane, both elastic and Li⁺-ion percolating, can stabilize Li plating/stripping with high Coulombic efficiency. The compact packing of a Li⁺ solid electrolyte phase offers percolated Li⁺-conducting channels and the consequent infiltration of an elastic polymer endows membrane flexibility to accommodate volume changes. The protected electrode allows Li plating with 95.8% efficiency for 200 cycles and stable operation of an LTO|Li cell for 2,000 cycles. This rationally structured membrane represents an interface engineering approach toward stabilized Li metal electrodes.

由于锂金属提供的高容量和低电压，锂金属电池能够彻底改变电动汽车的电池市场。然而，锂金属电极的当前开发受到它们与液体电解质和树突状生长的详尽的寄生反应的困扰，这对电池性能和安全性都造成了关注。我们证明了一种混合膜，既有弹性膜又有Li ⁺离子渗滤膜，可以以高库仑效率稳定Li镀层/剥离层。Li ⁺固体电解质相的紧密堆积可提供渗透的Li ⁺传导通道和随后的弹性聚合物渗透赋予膜柔韧性以适应体积变化。受保护的电极允许以200.循环的效率进行95.8％的Li电镀，并以2,000循环使LTO | Li电池稳定运行。这种合理结构的膜代表了针对稳定的锂金属电极的界面工程方法。