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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558134 | PMC |
| http://dx.doi.org/10.1002/advs.202406232 | DOI Listing |
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