To avoid degradation of silicon anodes in lithium-ion batteries (LIBs), the authors report a new two-dimensional multi-layered Si-intercalated rGO (rGO/Si) anode prepared by direct growth of Si into a porous multi-layered reduced graphene oxide (rGO) film. Direct Si deposition onto the porous rGO film allows the Si layers to be intercalated into the film via in situ replacement of the oxygen groups of the multi-layered graphene oxide (GO) with Si through thermal reduction of the GO film. The porous rGO acts as a cushion against the expansion of the Si layer during lithiation, preventing the Si from being pulverized and producing highly stable LIBs.

中文翻译：

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用于锂离子电池的高度稳定的多层插硅石墨烯负极

为了避免锂离子电池 (LIB) 中硅负极的降解，作者报告了一种新型二维多层插入硅氧化石墨烯 (rGO/Si) 负极，该负极通过将硅直接生长成多孔多层还原石墨烯来制备氧化 (rGO) 薄膜。直接在多孔 rGO 薄膜上沉积 Si 允许通过 GO 薄膜的热还原用 Si 原位替换多层氧化石墨烯 (GO) 的氧基团将 Si 层插入到薄膜中。多孔 rGO 在锂化过程中起到缓冲 Si 层膨胀的作用，防止 Si 被粉碎并产生高度稳定的 LIB。