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Self-Driven Infrared Electrochromic Device with Tunable Optical and Thermal Management
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-10-12 , DOI: 10.1021/acsami.1c14123 Hui Gong 1 , Jingru Ai 1 , Wanzhong Li 1 , Jiahao Zhu 1 , Qianqian Zhang 1 , Jingbing Liu 1 , Yuhong Jin 1 , Hao Wang 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-10-12 , DOI: 10.1021/acsami.1c14123 Hui Gong 1 , Jingru Ai 1 , Wanzhong Li 1 , Jiahao Zhu 1 , Qianqian Zhang 1 , Jingbing Liu 1 , Yuhong Jin 1 , Hao Wang 1
Affiliation
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Electrochromic devices (ECDs) exhibiting tunable optical and thermal modulation in the infrared (IR) region have attracted extensive attention in recent years due to their attractive application prospects in both military and civilian settings. However, considering the continuous energy supply needed for driving the device operation, it is desired to develop advanced IR-ECDs with low energy consumption. Herein, a flexible self-driven IR-ECD is constructed for achieving variable optical and thermal management in a low-energy mode. In this device, a built-in potential difference of 1.36 V exists between the EC polyaniline cathode and the aluminum foil anode. Consequently, there is a rapid and obvious increase in the IR reflectance of the device after connecting the two electrodes. Such a self-driven reflectance contrast is over 20% at the wavelength of 1500 nm, and the coloration efficiency of the device reaches up to 93.6 cm2 C–1. Meanwhile, the maximum apparent temperature modulation on the surface of the device reaches up to 5.6 °C. Then, the self-driven IR-ECD could recover to its original state driven by a solar cell, indicating good reversibility and stability. We anticipate that this work may provide a new insight into developing advanced self-driven IR-ECDs for applications in dynamic military camouflage and commercial thermal control.
中文翻译：
具有可调谐光学和热管理的自驱动红外电致变色器件
近年来，由于其在军事和民用环境中具有吸引力的应用前景，在红外 (IR) 区域表现出可调谐光学和热调制的电致变色器件 (ECD) 引起了广泛关注。然而，考虑到驱动设备运行所需的持续能量供应，需要开发低能耗的先进 IR-ECD。在此，构建了一种灵活的自驱动 IR-ECD，以在低能量模式下实现可变光学和热管理。在该装置中，EC 聚苯胺阴极和铝箔阳极之间存在 1.36 V 的内置电位差。因此，在连接两个电极后，器件的红外反射率迅速而明显地增加。2 C –1。同时，器件表面的最大表观温度调制高达 5.6 °C。然后，自驱动的 IR-ECD 可以在太阳能电池的驱动下恢复到其原始状态，表明具有良好的可逆性和稳定性。我们预计这项工作可以为开发用于动态军事伪装和商业热控制的先进自驱动 IR-ECD 提供新的见解。
更新日期：2021-10-27
中文翻译：
具有可调谐光学和热管理的自驱动红外电致变色器件
近年来，由于其在军事和民用环境中具有吸引力的应用前景，在红外 (IR) 区域表现出可调谐光学和热调制的电致变色器件 (ECD) 引起了广泛关注。然而，考虑到驱动设备运行所需的持续能量供应，需要开发低能耗的先进 IR-ECD。在此，构建了一种灵活的自驱动 IR-ECD，以在低能量模式下实现可变光学和热管理。在该装置中，EC 聚苯胺阴极和铝箔阳极之间存在 1.36 V 的内置电位差。因此，在连接两个电极后，器件的红外反射率迅速而明显地增加。2 C –1。同时，器件表面的最大表观温度调制高达 5.6 °C。然后，自驱动的 IR-ECD 可以在太阳能电池的驱动下恢复到其原始状态，表明具有良好的可逆性和稳定性。我们预计这项工作可以为开发用于动态军事伪装和商业热控制的先进自驱动 IR-ECD 提供新的见解。
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