Novel one-step in situ growth of SnO2 quantum dots on reduced graphene oxide and its application for lithium ion batteries

Novel one-step in situ growth of SnO2 quantum dots on reduced graphene oxide and its application for lithium ion batteries
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还原氧化石墨烯上SnO2量子点的新型一步原位生长及其在锂离子电池中的应用

DOI:
10.1016/j.jssc.2019.01.028
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发表时间:
2019-05
影响因子:
3.3
通讯作者:
Liu jun
Liu jun
中科院分区:
化学3区
文献类型:
--
作者:
Lu Ren;Yang Yao;Kangyan Wang;Site Li;Kunjie Zhu;Liu jun

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在大气环境下,采用一步熔盐法在氧化石墨烯(RGO)上原位生长了超细SnO2量子点(QD),生长温度为2 5 0 °C。简单的低温熔盐法制备了平均尺寸仅为5.5 nm的SnO_2量子点。在rGO上制备的单分散SnO_2量子点比裸SnO_2纳米粒子(NPs)具有更好的电化学性能。这种在RGO上原位生长金属氧化物量子点的新方法易于实现和规模化,而且与传统的模板法或水热法相比,生长超细金属氧化物量子点要简单得多。熔盐法还可以用来在rGO上制备其他金属氧化物量子点作为LiBS的电极材料。
Ultrafine SnO2quantum dots (QDs) have been in situ grown on reduced graphene oxide (rGO) by a facile method, which only involved a one-step molten salt method at 250 °C under atmosphere environment. The facile low-temperature molten salt method imparts SnO2QDs with an average size of only 5.5 nm. The as-prepared mono-dispersed SnO2QDs on rGO show enhanced electrochemical performances than those of bare SnO2nanoparticles (NPs). Such novel method for in-situ growth of metal oxide QDs on rGO is easy to carry out and scale up, and it is much simpler to grow ultrafine metal oxide QDs than those of traditional methods, such as template methods or hydrothermal methods. The molten salt method may also be used to produce other metal oxide QDs on rGO as electrode materials for LIBs.
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