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Template-assisted synthesis of multi-shelled carbon hollow spheres with an ultralarge pore volume as anode materials in Li-ion batteries

机译:模板辅助合成具有超大孔容的多壳碳空心球作为锂离子电池的负极材料

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By reinventing single-shelled silica hollow spheres and double-shelled silica hollow spheres as the permeable templates, double and quadruple shell carbon hollow spheres are prepared. For this intriguing architecture, the ultralarge pore volume (3.02 cm(3) g(-1)) and the ultrahigh Brunauer-Emmett-Teller (BET) specific surface areas (similar to 1534 m(2) g(-1)) endow the multi-shelled carbon hollow structures with a high reversible capacity (similar to 978 mA h g(-1)). Remarkably, a high capacity of 753 mA h g(-1) at both low and high current densities can still be attained after 75 cycles. Such a breathable structure makes the multi-shelled hollow structure a superior anode material for a Li-ion battery.
机译:通过重新发明单壳二氧化硅空心球和双壳二氧化硅空心球作为可渗透模板,制备了双壳和四壳碳空心球。对于这种有趣的体系结构,赋予了超大的孔体积(3.02 cm(3)g(-1))和超高的Brunauer-Emmett-Teller(BET)比表面积(类似于1534 m(2)g(-1))具有高可逆容量(类似于978 mA hg(-1))的多壳碳空心结构。值得注意的是,经过75个循环后,在低电流密度和高电流密度下仍可获得753 mA h g(-1)的高容量。这种透气的结构使多壳空心结构成为锂离子电池的优质负极材料。

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