Lithium metal anode is the most potential anode material for the next generation high-energy rechargeable batteries owing to its highest specific capacity and lowest redox potential. Unfortunately, the uneven deposition of Li during plating/stripping and the formation of uncontrolled Li dendrites, which might cause poor battery performance and serious safety problems, are demonstrating to be a huge challenge for its practical application. Here, we show that a flexible and free-standing film hybriding with polypyrrole (PPy) nanotubes and reduced graphene oxide (rGO) can significantly regulate the Li nucleation and deposition, and further prohibit the formation of Li dendrites, owing to the large specific surface area, rich of nitrogen functional groups and porous structures. Finally, the high Coulombic efficiency and stable Li plating/stripping cycling performance with 98% for 230 cycles at 0.5 mA cm⁻² and more than 900 hours stable lifespan are achieved. No Li dendrites form even at a Li deposition capacity as high as 4.0 mA h cm⁻². Besides, the designed PPy/rGO hybrid anode scaffold can also drive a superior battery performance in the lithium-metal full cell applications.

锂金属负极由于其最高的比容量和最低的氧化还原电位，因此是下一代高能可充电电池最有潜力的负极材料。不幸的是，在镀覆/剥离过程中Li的不均匀沉积以及不受控制的Li树枝状晶体的形成，可能导致电池性能下降和严重的安全问题，显示出对其实际应用的巨大挑战。在这里，我们表明，与聚吡咯（PPy）纳米管和还原的氧化石墨烯（rGO）混合的柔性且自支撑的膜可以显着调节Li的成核和沉积，并且由于大的比表面积而进一步阻止Li树枝状晶体的形成区域，富含氮官能团和多孔结构。最后，^-2和900个小时以上的稳定使用寿命。即使在高达4.0mA h cm ^-2的Li沉积容量下也不会形成Li树枝状晶体。此外，设计的PPy / rGO混合阳极支架还可以在锂金属全电池应用中推动卓越的电池性能。