Topic
Electrochromism
About: Electrochromism is a research topic. Over the lifetime, 13097 publications have been published within this topic receiving 294637 citations.
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TL;DR: In this paper, the authors describe the state-of-the-art technology that is being implemented in commercial applications and suggest future research directions that are motivated by the need to reduce the production costs of large-area EC windows.
Abstract: Many transition metal-oxide films exhibit an electrochromic (EC) effect as they change their optical transmittance upon charge insertion or extraction. These materials may be integrated into multilayer devices, and the optical modulation is then produced by application of a small electrical voltage. Electrochromic films are therefore being developed for application in dynamic or “smart” windows that are at the forefront of emerging energy-saving advances in building technologies. Here we will describe the state-of-the-art technology that is being implemented in commercial applications. It predominantly relies on the use of tungsten oxide-based films (coloring with ion insertion) and nickel oxide-based films (coloring with ion extraction). We also suggest future research directions that are motivated by the need to reduce the production costs of large-area EC windows. Specifically, we describe the possibility of alternative less expensive manufacturing processes, as well as the development of flexible EC devices that allow for an inexpensive “retrofit” installation to existing structures.
328 citations
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TL;DR: In this article, a review of the chemistry, electrochemistry, stability and manufacturing of different window varieties is presented, with a focus on the chemistry and stability of different windows.
324 citations
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TL;DR: Tungsten oxide quantum dots with an average size down to 1.6 nm are developed, serving as a new class of promising electrode materials, which yield efficient and fast electron/ion transport in the charge/discharge process.
Abstract: Tungsten oxide quantum dots (QDs) with an average size down to 1.6 nm are developed, serving as a new class of promising electrode materials, which yield efficient and fast electron/ion transport in the charge/discharge process. With a visually impressive display, the QDs present coloration/bleaching times within 1 s, which is much superior to inorganic analogues and even competitive to organic-related materials.
323 citations
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TL;DR: In this paper, an integrated multifunctional flexible device called the Energy Storage Smart Window (ESS window) was designed and fabricated, which comprises an integrated supercapacitor and electrochromism function in one flexible device using ordered polyaniline nanowire arrays as electrodes.
Abstract: In this paper, a new integrated multifunctional flexible device called the Energy Storage Smart Window (ESS window) was designed and fabricated. The proposed ESS window comprises an integrated supercapacitor and electrochromism function in one flexible device using ordered polyaniline nanowire arrays as electrodes. The ESS window showed high areal capacitance and high stability as a supercapacitor, and in situ optical measurements proved its electrochromic function. Furthermore, the ESS window can be integrated with a conventional solar cell to form a smart device system, which can simultaneously harvest, store, and use renewable energy efficiently.
322 citations
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TL;DR: In this paper, uniform NiO nanoparticles on different substrates were successfully synthesized by a simple and low-cost solvothermal method and achieved high capacitance (1386 F g−1 at 1 ǫg−1) and excellent rate capability.
321 citations