How much of the energy in the electrochromic energy storage window can be reused?

Xie, Yunfei; Li, Meini; Huang, Ruonan; Cao, Ningzhi; Chao, Danming

doi:10.1016/j.ensm.2024.103321

Cited by 4 publications

(1 citation statement)

References 48 publications

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“…14 So far, the non-conjugated polymeric electrode materials have attracted the attention of researchers for development and investigation in these two years. 29,30,36,37 Constantin et al introduced phenoxazine (POZ) chromophores into the triphenylamine moiety to prepare a non-conjugated linear polyamide, and the resulting POZ-incorporated polyamide showed high Δ T contrast, remarkable C sp , and good stability. 30 At the same time, they also mentioned that the thickness of the polyamide film results in a trade-off relationship between electrochromism and supercapacitor performance.…”

Section: Introductionmentioning

confidence: 99%

Non-conjugated electrochromic supercapacitors with atom-economic arylamine-based AB₂-polyamides

Shao,

Cho,

et al. 2024

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Non-conjugated electrochromic supercapacitors with atom-economic arylamine-based AB₂-polyamides

Shao,

Cho,

et al. 2024

J. Mater. Chem. A

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Reusing the Wasted Energy of Electrochromic Smart Window for Near‐Zero Energy Building

Xie,

Huang,

et al. 2024

Advanced Science

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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−2). The buildings utilizing ESW‐PZ to modulate indoor environments demonstrated an average annual energy saving of 366 MJ m−2 based on energy simulations, which is about 16% of the total energy consumption. Impressively, a high utilization efficiency of 90% (855 mWh m−2) 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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A Multi‐Color Four‐Mode Electrochromic Window for All‐Season Thermal Regulation in Buildings

Chen,

Cao,

Liu

et al. 2024

Advanced Energy Materials

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Electrochromic windows can control the amount of sunlight entering buildings, thus enabling thermal regulation and offering a significant opportunity to reduce building energy consumption. However, current electrochromic windows encounter difficulties with multi‐color control and fully independent adjustment of visible light and near‐infrared heat. Herein, this work introduces an advanced multi‐color four‐mode dual‐band electrochromic smart window (DESW) that not only showcases various color transformations but also independently manages visible light and near‐infrared heat from solar radiation, providing year‐round thermal regulation for buildings. This device features a zinc anode with Prussian blue analogues and tungsten oxide film electrodes. Its optical state superposition effect allows for a range of color transformations (yellow, orange, green, and black), enhancing visual appeal and offering four distinct optical states for precise control of visible light and near‐infrared transmittance. Simulation results show that this device achieves greater energy efficiency than commercial glass in most global climates throughout the year. Moreover, the energy generated by this multi‐color four‐mode DESW can be used to power low‐energy devices within the building, further decreasing overall energy consumption. This research opens up extensive possibilities for smart window design and supports the development of green buildings, contributing to global carbon neutrality and sustainable development.

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How much of the energy in the electrochromic energy storage window can be reused?

Cited by 4 publications

References 48 publications

Non-conjugated electrochromic supercapacitors with atom-economic arylamine-based AB₂-polyamides

Non-conjugated electrochromic supercapacitors with atom-economic arylamine-based AB₂-polyamides

Reusing the Wasted Energy of Electrochromic Smart Window for Near‐Zero Energy Building

A Multi‐Color Four‐Mode Electrochromic Window for All‐Season Thermal Regulation in Buildings

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How much of the energy in the electrochromic energy storage window can be reused?

Cited by 4 publications

References 48 publications

Non-conjugated electrochromic supercapacitors with atom-economic arylamine-based AB2-polyamides

Non-conjugated electrochromic supercapacitors with atom-economic arylamine-based AB2-polyamides

Reusing the Wasted Energy of Electrochromic Smart Window for Near‐Zero Energy Building

A Multi‐Color Four‐Mode Electrochromic Window for All‐Season Thermal Regulation in Buildings

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Product

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Non-conjugated electrochromic supercapacitors with atom-economic arylamine-based AB₂-polyamides

Non-conjugated electrochromic supercapacitors with atom-economic arylamine-based AB₂-polyamides