Silicon anode is deemed to be one of the most promising anode materials and has attracted wide attention from all walks of life. However, its commercial application is severely limited owing to the high cost, serious volume expansion, and poor electrical conductivity. Herein, Si/SiOx nanoparticles were successfully prepared by sand milling the low-cost volatile deposited silicon waste from electron beam refining polycrystalline silicon. Furthermore, the atomic layer deposited (ALD) zine oxide on Si/SiOx nanoparticles enhances the integrity of the electrode structure and provides a steady solid electrolyte layer (SEI). The outer layer is wrapped by a uniform carbon shell to restrict the volume expansion and boost the conductivity of the electrode during lithiation/delithiation. Impressively, lithium-ion batteries (LIBs) employing the Si/SiOx@ZnO@C anodes display excellent rate performance (up to 844.48 mAh g^-1 at 2 A g^-1) and cycle stability (912.7 mAh g^-1 at 1A g^-1 over 50 cycles). Moreover, the Si/SiOx@ZnO@C electrode exhibits high initial coulombic efficiency (76.8%) and the reversible specific capacity maintains at 846 mAh g^-1 over 200 cycles with a current density at 0.5 A g^-1. The improvement is ascribed to the synergistic effect of triple-protected layer that effectively enhances the stability of SEI and the conductivity of the electrode. This work not only opens a novel and economic strategy for the manufacture of high-performance silicon-based anode but also furnishes an original approach for recycling and resource utilization of silicon waste.

硅负极被认为是最具发展前景的负极材料之一，受到了社会各界的广泛关注。但其成本高、体积膨胀严重、导电性差等问题严重限制了其商业应用。在此，通过对来自电子束精炼多晶硅的低成本挥发性沉积硅废料进行砂磨，成功制备了 Si/SiOx 纳米粒子。此外，Si/SiOx 纳米粒子上的原子层沉积 (ALD) 氧化锌增强了电极结构的完整性并提供了稳定的固体电解质层 (SEI)。外层由均匀的碳壳包裹，以限制体积膨胀并提高锂化/脱锂过程中电极的电导率。令人印象深刻的是，^-1在 2 A g ^-1 ) 和循环稳定性（912.7 mAh g ^-1在 1A g ^-1超过 50 个循环）。^{此外，Si/SiOx@ZnO@C电极表现出高初始库仑效率（76.8%），可逆比容量在0.5 A g -1}的电流密度下循环200次后仍保持在846 mAh g ^-1。这种改进归因于三重保护层的协同作用，有效提高了SEI的稳定性和电极的导电性。该工作不仅为高性能硅基负极的制造开辟了一条新颖、经济的策略，也为硅废料的回收利用提供了一条新途径。