Xie Yunfei, Huang Ruonan, Li Meini, Cao Ningzhi, Jia Xiaoteng, Wang Caiyun, Chao Danming
College of Chemistry, Jilin University, Changchun, 130012, China.
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China.
Adv Sci (Weinh). 2024 Nov;11(42):e2406232. doi: 10.1002/advs.202406232. Epub 2024 Sep 16.
Electrochromic smart windows (ESWs) are an effective energy-saving technology for near-zero energy buildings. They consume electric energy unidirectionally during a round-trip coloring-bleaching process, with the energy involved in the bleaching process being wasted. It is highly desirable to reuse this wasted electric energy directly and/or transfer it into other energy storage equipment, further enhancing the overall efficiency of electric energy usage. Herein, a zinc anode-based ESW (ESW-PZ) is reported that not only has fascinating visible-near-infrared (VIS-NIR) dual-band electrochromic performance (a high optical contrast of 63%) but also showcases good energy storage characteristics (a wide voltage window of 2.6 V and a high energy density of 127.5 µWh cm). The buildings utilizing ESW-PZ to modulate indoor environments demonstrated an average annual energy saving of 366 MJ m based on energy simulations, which is about 16% of the total energy consumption. Impressively, a high utilization efficiency of 90% (855 mWh m) of the wasted electric energy is realized through an ingenious circuit-switching strategy, which can be reused to power small household appliances.
电致变色智能窗（ESW）是一种用于近零能耗建筑的有效节能技术。在往返的着色-褪色过程中，它们单向消耗电能，而褪色过程中涉及的能量被浪费掉了。非常希望直接再利用这种浪费的电能和/或将其转移到其他能量存储设备中，进一步提高电能使用的整体效率。在此，报道了一种基于锌阳极的电致变色智能窗（ESW-PZ），它不仅具有迷人的可见-近红外（VIS-NIR）双波段电致变色性能（高达63%的高光学对比度），而且还展现出良好的储能特性（2.6 V的宽电压窗口和127.5 μWh cm的高能量密度）。基于能量模拟，利用ESW-PZ调节室内环境的建筑平均每年节能366 MJ m，约占总能耗的16%。令人印象深刻的是，通过巧妙的电路切换策略实现了90%（855 mWh m）的高浪费电能利用率，这些电能可再利用来为小型家用电器供电。
