Sodium (Na) metal batteries have gained extensive attention as promising next-generation rechargeable batteries owing to the low cost of Na resource, and high specific capacity and low electrochemical potential of Na metal anode. The development of Na metal batteries is still hindered by the challenge of repetitive breakage/recovery of solid electrolyte interphase (SEI) film caused by the volume expansion of Na metal anode during stripping/plating process, which results in dendritic Na growth, low Coulombic efficiency, and short cycling life. Herein, we synthesized hierarchical Sb₂MoO₆ (SMO) microspheres to serve as a substrate that can self-construct into a unique sodiophilic structure composed of 'seed-embedded conductive buffer matrix' to enable uniform Na deposition without dendrite growth. As a result, symmetric cells with Na-predeposited SMO (Na/SMO) electrodes demonstrate highly stable voltage profile with small hysteresis, excellent cycling stability (up to 500 cycles) at a high current density (up to 10 mA cm^-2) and a large areal capacity (up to 8 mAh cm^-2). Na-ion full cells consist of Na/SMO anode and Na₃V₂(PO₄)₃ cathode show significantly enhanced electrochemical performance (a capacity of 101.3 mAh g^-1 is retained after 800 cycles at 10C) compared to the cells with bare Na metal anode.

由于钠资源的成本低，钠金属阳极的高比容量和低电化学势，钠（Na）金属电池作为有前途的下一代可再充电电池受到了广泛关注。Na金属电池的发展仍然受到剥离/电镀过程中Na金属阳极的体积膨胀引起的固体电解质中间相（SEI）膜反复破损/回收的挑战的阻碍，这会导致树枝状Na的生长，库伦效率低，并且自行车寿命短。在这里，我们合成了分级Sb ₂ MoO ₆（SMO）微球充当底物，该底物可以自我构建为由“种子嵌入的导电缓冲基质”组成的独特的亲嗜性结构，以实现均匀的Na沉积而无枝晶生长。结果，具有Na预先沉积的SMO（Na / SMO）电极的对称电池显示出高稳定的电压曲线，具有较小的磁滞，在高电流密度（高达10 mA cm ^-2）下具有出色的循环稳定性（高达500个循环），并且大的面容量（最大8 mAh cm ^-2）。由Na / SMO阳极和Na ₃ V ₂（PO ₄）₃阴极组成的Na离子全电池显示出显着增强的电化学性能（容量为101.3 mAh g ^-1 与带有裸露的Na金属阳极的电池相比，在10C下经过800个循环后，Al 2 O 3被保留。