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首页> 外文期刊>Nanotechnology >Substrate-free fabrication of self-supported V2O5 nanobelt arrays by a low-temperature solvothermal method with high electrochemical performance
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Substrate-free fabrication of self-supported V2O5 nanobelt arrays by a low-temperature solvothermal method with high electrochemical performance

机译：低温溶剂热法高电化学性能无载体制备V2O5纳米带阵列

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摘要

In the designed synthesis, self-supported NH4V3O8 nanobelt arrays were prepared via a low-temperature solvothermal method. Then the NH4V3O8 nanobelt arrays were calcined in air atmosphere. Finally, a self-supported pattern of oriented V2O5 nanobelts was obtained for the first time. Further characterization methods certified that the growth direction of NH4V3O8 nanobelts was perpendicular to the orientation plane of self-formed NH4V3O8 sheet-like substrates. As a result, the nanobelts should stretch easily on the sheet-like substrate in an oriented manner. We prove that the solvent of ethanol plays a key role in the reaction and crystal growth process. It balances the two competing oxolation and olation reactions. Furthermore, the unique pattern served as high performance a lithium-ion battery and supercapacitor. Overall, the excellent electrochemical performances, for example, outstanding rate stability, remarkable cycling capacitance and ultrahigh capacity verify that the self-supported alignments have great potential applications in lithium-ion batteries and supercapacitors.
机译：在设计的合成中，通过低温溶剂热法制备了自支撑的NH4V3O8纳米带阵列。然后将NH4V3O8纳米带阵列在空气中煅烧。最后，首次获得了取向的V2O5纳米带的自支撑图案。进一步的表征方法证明了NH4V3O8纳米带的生长方向垂直于自形成的NH4V3O8片状基材的取向平面。结果，纳米带应易于以取向的方式在片状基材上拉伸。我们证明乙醇溶剂在反应和晶体生长过程中起关键作用。它平衡了两个相互竞争的羟化反应和羟化反应。此外，独特的图案可作为高性能的锂离子电池和超级电容器。总的来说，出色的电化学性能，例如出色的速率稳定性，出色的循环电容和超高容量，证明了自支撑取向在锂离子电池和超级电容器中具有巨大的潜在应用。

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