Improvement of color retention properties of Ag deposition-based electrochromic device by introducing anion exchange membrane
Improvement of color retention properties of Ag deposition-based electrochromic device by introducing anion exchange membrane
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DOI：
10.1557/mrc.2018.55
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发表时间：
2018-06
影响因子：
1.9
通讯作者：
S. Kimura;Ryouji Onodera;Kazuki Nakamura;Norihisa Kobayashi
中科院分区：
文献类型：
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作者：
S. Kimura;Ryouji Onodera;Kazuki Nakamura;Norihisa Kobayashi
我们报道的基于银沉积的多色电致变色(EC)器件仅通过电化学沉积银就可以在透明、黑色、银色、青色、品红和黄色之间切换各种光学状态。然而，由于沉积的银金属被Cu2+离子溶解，在开路状态下，电致发光器件的保色性很差，这是因为它是对电极上的氧化还原材料。在这里，我们引入了一种阴离子交换膜来从银矿床中分离出铜^2+。改进后的装置实现了更长的色态保留时间。在实际应用中，在不通电的情况下保持着色状态是有效的。
Ag deposition-based multicolor electrochromic (EC) device we reported can switch various optical states among transparent, black, silver, cyan, magenta, and yellow by only using electrochemical deposition of Ag. However, the EC device had poor color retention property under open-circuit state because of dissolution of deposited Ag metal by Cu^2+ ions, which is essential because it acts as redox material at counter electrode. Here, we introduced an anion exchange membrane to separate Cu^2+ from the Ag deposit. The improved device achieved longer retention time of colored state. It is effective to maintain the coloring state without electric power for practical application.