Double shelled hollow SnO2/polymer microsphere as a high-capacity anode material for superior reversible lithium ion storage
Double shelled hollow SnO2/polymer microsphere as a high-capacity anode material for superior reversible lithium ion storage
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DOI：
10.1039/c4ta05235h
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发表时间：
2015
影响因子：
--
通讯作者：
Meijun Zhou;Yong-chang Liu;Jun Chen;Xinlin Yang
中科院分区：
文献类型：
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作者：
Meijun Zhou;Yong-chang Liu;Jun Chen;Xinlin Yang
通过氢氟酸蚀刻从相应的 SiO2/SnO2/P(EGDMA-co-MAA) 三层微球中选择性去除二氧化硅内核，制备双壳中空二氧化锡/聚(乙二醇二甲基丙烯酸酯-共-甲基丙烯酸) (SnO2/P(EGDMA-co-MAA)) 微球。这些三层微球的合成方法是将改进的 Stober 法用于二氧化硅内核、水热技术用于夹层 SnO2 层以及蒸馏沉淀聚合用于涂覆 P(EGDMA-co-MAA) 壳层。双壳空心微球用作锂离子电池负极材料，与使用纯SnO2空心球相比，其循环性能显着增强。
Double shelled hollow tin dioxide/poly(ethyleneglycol dimethacrylate-co-methacrylic acid) (SnO2/P(EGDMA-co-MAA)) microspheres were prepared by selective removal of the silica inner core via etching with hydrofluoric acid from the corresponding SiO2/SnO2/P(EGDMA-co-MAA) tri-layer microspheres. These tri-layer microspheres were synthesized using a combination of the modified Stober method for the silica inner core, a hydrothermal technique for the sandwiched SnO2 layer and distillation precipitation polymerization for the coated P(EGDMA-co-MAA) shell-layer. The double shelled hollow microspheres were utilized as anode materials for lithium ion batteries, which had a significantly enhanced cycling performance compared to when neat SnO2 hollow spheres were used.