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首页> 外文期刊>International Journal of Electrochemical Science >Synthesis of self-assembled Hollow-Sphere ZnO/rGO Nanocomposite as Anode Materials for Lithium-Ion Batteries
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Synthesis of self-assembled Hollow-Sphere ZnO/rGO Nanocomposite as Anode Materials for Lithium-Ion Batteries

机译：自组装空心球ZnO / rGO纳米复合材料作为锂离子电池负极材料的合成

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摘要

We investigate the lithium storage properties of two kinds of materials as anode for LIB: graphene oxide(GO) and self-assembled hollow-sphere zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposite.GO is obtained by Hummers method controlled by the various process parameters. The ZnO/rGO hollowsphere nanocomposite is synthesized by a low temperature (95 °C) chemical solution reaction. ForZnO/rGO composite, the capacity is increased remarkably as compared to GO sheets, and this is due tothe synergistic effects of both the components in the composite. The GO acts as a conductive bufferlayer that promotes the conductivity, and suppresses the volume expansion of ZnO during thecharge/discharge process. ZnO/rGO hollow sphere structure nanocomposite has higher capacity 605.36mAh g -1 , which is 4.5 times higher than GO (133.82 mAh g -1 ), after 20 cycles. The capacity variationwith the charge-discharge rate of ZnO/rGO nanocomposite showed a higher capacity (299.95 mAhg -1 at1700 mAg -1 ) than GO (20.09 mAhg -1 at 1488 mAg -1 ) after 32 cycles.
机译：我们研究了作为LIB阳极的两种材料的锂存储性能：氧化石墨烯（GO）和自组装空心球状氧化锌/还原氧化石墨烯（ZnO / rGO）纳米复合材料。各种工艺参数。 ZnO / rGO中空球纳米复合材料是通过低温（95°C）化学溶液反应合成的。对于ZnO / rGO复合材料，与GO板相比，容量显着增加，这是由于复合材料中两种组分的协同作用所致。 GO用作导电缓冲层，可提高导电性，并在充电/放电过程中抑制ZnO的体积膨胀。 ZnO / rGO中空球结构纳米复合材料在20个循环后具有605.36mAh g -1的更高容量，是GO（133.82 mAh g -1）的4.5倍。 ZnO / rGO纳米复合材料的容量随充电/放电速率的变化在32个循环后显示出更高的容量（在1700 mAg -1处为299.95 mAhg -1）在GO下（在1488 mAg -1处为20.09 mAhg -1）。

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