A novel approach to fabricate sandwich-like graphene-supported mesoporous SnO2 nanosheets (G-SnO2) as anode materials for lithium-ion batteries (LIBs) was developed. The obtained sandwich-like G-SnO2 inherit the typical two-dimensional structure of graphene and possess a high specific surface area (64[Formula: see text]m2g[Formula: see text]), nanosized SnO2 particles (about 3[Formula: see text]nm in diameter), mesoporous structure (a pore size of mainly [Formula: see text]3.8[Formula: see text]nm), large aspect ratio and enhanced electrical conductivity. As a consequence, the G-SnO2 anode significantly improved the LIBs capacity and cycle performance (536[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 500[Formula: see text]mA[Formula: see text]g[Formula: see text] even after 500 cycles).

中文翻译：

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石墨烯支撑的介孔 SnO2 纳米片作为锂离子电池的高性能负极材料

一种制备夹层状石墨烯支撑的介孔二氧化锡的新方法2纳米片（G-SnO2) 作为锂离子电池 (LIB) 的负极材料。得到的三明治状 G-SnO2继承了石墨烯典型的二维结构，具有较高的比表面积（64[公式：见正文]m2g[公式：见正文]），纳米级 SnO2颗粒（直径约3[公式：见文]nm），介孔结构（孔径主要为[公式：见文]3.8[公式：见文]nm），大纵横比和增强的电导率。因此，G-SnO2阳极显着提高了LIBs的容量和循环性能（536[公式：见文]mAh[公式：见文]g[公式：见文]在500[公式：见文]mA[公式：见文]g[公式：见文字]，即使在 500 次循环后）。