Si has been regarded as one of the most promising anodes for next-generation lithium ion batteries for its high theoretical capacity (3579 mA h g⁻¹) and low operating potential of 0.4 V vs Li/Li⁺. However, the huge volume change during (de)lithiation and low electronic conductivity impede its further commercial applications. In this work, Zn/Si porous multi-layer films with controllable layer number (from 1 to 6 layers) are constructed firstly, and then a ZnO thin layer is sputtered on the top surface of the Zn/Si films to fabricate the Zn/Si/ZnO porous multi-layer films. When used as binder-free anodes, the designed 4 layers Zn/Si/ZnO thin film anode delivers the highest specific capacity, best cycling and rate performance than other multi-layer film anodes and the bulk Zn/Si/ZnO film anode with the same overall thickness. The excellent electrochemical properties of the prepared 4 layers Zn/Si/ZnO porous composite film anode can be attributed to its porous and multilayer structure, which can moderate the volume change, decrease the internal stress and benefit to the penetration of electrolyte. Moreover, the 3D electron and Li⁺ ion conductive channels resulted from the formed Li–Zn alloy during cycling can help to increase the electrochemical reaction kinetics.

Si具有较高的理论容量（3579 mA h g ^-1）和0.4 V vs Li / Li ^+的低工作电势，被认为是下一代锂离子电池最有希望的阳极之一。然而，在（去）锂化期间的巨大体积变化和低电子电导率阻碍了其进一步的商业应用。在这项工作中，首先构造具有可控层数（从1到6层）的Zn / Si多孔多层膜，然后在Zn / Si膜的顶面上溅射ZnO薄层以制造Zn / Si。 Si / ZnO多孔多层膜。当用作无粘合剂阳极时，设计的4层Zn / Si / ZnO薄膜阳极比其他多层膜阳极和带有Zn / Si / ZnO薄膜阳极的块状Zn / Si / ZnO膜阳极具有最高的比容量，最佳循环和倍率性能。相同的整体厚度。所制备的4层Zn / Si / ZnO多孔复合膜阳极的优异电化学性能可归因于其多孔多层结构，可缓和体积变化，降低内应力，有利于电解液的渗透。而且3D电子和锂在循环过程中由形成的Li-Zn合金形成的⁺离子导电通道可以帮助增加电化学反应动力学。