A novel strategy for designing the lithium powder anode stabilized by electrospun membrane for lithium metal batteries with high specific energy

Lithium powder is a suitable candidate for anode material to suppress the formation of dendritic lithium and alleviate the volume changes. Here, a novel strategy for designing the lithium powder anode stabilized by electrospun membrane (LP@EM LPA) is reported. The lithium powder prepared via a middle-temperature emulsification method is embedded into electrospun membrane to obtain stable three-dimensional network structure that can enhance the interface stability between separator and lithium metal anode, thus leading to improve electrochemical performance for lithium metal batteries (LMBs). The LP@EM LPA can guide the regular lithium-ion distribution and uniform lithium deposition. As a result, the Li//Li symmetric cells present a superior inhibition of dendritic lithium with good long-term cyclic stability for 800 h at current density of 0.2 mA cm−2. Furthermore, the Li//LiCoO2 and Li//LiNi0.8Co0.1Mn0.1O2 asymmetric cells deliver an outstanding cycle performance and rate capability. This methodology may be useful in designing high specific energy anode for next-generation LMBs.