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首页> 外文期刊>Nanotechnology >Highly transparent TiO(2)nanowires as charge-balancing layers for assembling electrochromic devices: effect of thickness on electrode potentials and electrochromic performance
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Highly transparent TiO(2)nanowires as charge-balancing layers for assembling electrochromic devices: effect of thickness on electrode potentials and electrochromic performance

机译：高度透明的TiO（2）纳米线作为用于组装电致变色器件的电荷平衡层：厚度对电极电位和电致变色性能的影响

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摘要

TiO(2)nanowires with high transparency and good ion storage capacity were explored as the charge-balancing layers for assembling electrochromic devices (ECDs). Increase thickness of TiO(2)nanowires layer lowers the driving potential of the entire ECDs accompanied with reduced potential at the EC layer electrode, which further leads to decreased optical contrast and switching speed of the ECDs. Meanwhile, it can be found that the EC layer electrodes possess larger charge densities than those of TiO(2)nanowire electrodes during the electrochemical redox process of these ECDs. However, the intrinsic injection and extraction charge densities of each single electrode are similar, which appears that the intrinsic charge balance of EC layer and TiO(2)nanowires electrodes play more important role in the cycling stability of the ECDs. ECD with an optimum thickness of the TiO(2)nanowires layer exhibits good electrochromic properties in term of high optical contrast (similar to 45%), fast switching speed (3.23 s) and excellent cycling stability (which has nearly no decay after 5000 cycles). This study explores the effects of thickness of TiO(2)Nanowires layer on electrode potentials and electrochromic properties of electrochromic devices (ECDs), providing a potentially new direction for the preparation of ECDs with good integrated performance.
机译：的TiO（2）具有高透明性和良好的离子存储容量纳米线探索作为用于组装电致变色器件（ECD的）电荷平衡层。的TiO（2）的厚度增加纳米线层降低了整个的ECD的在EC层电极，其进一步导致减少光学对比度和的ECD的开关速度伴随着降低电位的驱动电位。同时，可以发现，EC层电极具有比二氧化钛的大的电荷密度时（2）纳米线电极这些的ECD的电化学氧化还原过程。然而，每个单电极的本征注入和提取电荷密度是相似的，这似乎EC层和TiO（2）的本征电荷平衡纳米线电极上的的ECD的循环稳定性起到更重要的作用。 ECD与在TiO的最佳厚度（2）纳米线层显示出在高光学对比度长期良好的电致变色性能（类似于45％），快速开关速度（3.23 S）和优异的循环稳定性（这5000个循环后具有几乎没有衰减）。本研究探讨上的电极电势和电致变色装置（ECD的）的电致变色性能的TiO（2）纳米线层的厚度的影响，对于具有良好的综合性能的ECD的制备提供潜在的新方向。

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