Hollow spherical SiO micro-container encapsulation of LiCl for high-performance simultaneous heat reallocation and seawater desalination

Hollow spherical SiO micro-container encapsulation of LiCl for high-performance simultaneous heat reallocation and seawater desalination

Energy & fresh water have both become scarce resources in the modern era of human society. Sorption-based technology is environmentally friendly and energy-efficient and can be driven by low-grade energy to transfer energy and produce fresh water. Here, we report a solid sorbent fabricated by en...

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Veröffentlicht in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2020-01, Vol.8 (4), p.1887-1895
Hauptverfasser: Yang, Kaijie, Shi, Yusuf, Wu, Mengchun, Wang, Wenbin, Jin, Yong, Li, Renyuan, Shahzad, Muhammad Wakil, Ng, Kim Choon, Wang, Peng
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container_issue 4
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container_title Journal of materials chemistry. A, Materials for energy and sustainability
container_volume 8
creator Yang, Kaijie
Shi, Yusuf
Wu, Mengchun
Wang, Wenbin
Jin, Yong
Li, Renyuan
Shahzad, Muhammad Wakil
Ng, Kim Choon
Wang, Peng
description Energy & fresh water have both become scarce resources in the modern era of human society. Sorption-based technology is environmentally friendly and energy-efficient and can be driven by low-grade energy to transfer energy and produce fresh water. Here, we report a solid sorbent fabricated by encapsulating a hygroscopic salt, lithium chloride (LiCl), inside micro-sized hollow-structured SiO 2 . This composite sorbent (LiCl@HS) exhibits 6 times faster water vapor sorption kinetics than pure LiCl and a water vapor sorption capacity of 1.7 kg kg 1 at a relative humidity (RH) of 50%, which is the highest ever reported for any solid sorbent in the literature. The low regeneration temperature (
doi_str_mv 10.1039/c9ta11721k
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The thermodynamic calculations reveal that the sorbent is able to continuously supply 20 C temperature lift with a maximum coefficient of performance (COP) for cooling of 0.97 and COP for heating of 1.89 while simultaneously producing 9.05 kg potable water per kilogram sorbent daily using seawater as the source water and solar energy as the sole energy source. A homemade system is developed and its practical performance in providing seasonally switchable heating and cooling along with clean water production from source water with an impaired quality is successfully verified, indicating its great potential. Micro hollow SiO 2 spheres with LiCl encapsulated inside for high-performance simultaneous heat reallocation and seawater desalination.</description><identifier>ISSN: 2050-7488</identifier><identifier>EISSN: 2050-7496</identifier><identifier>DOI: 10.1039/c9ta11721k</identifier><ispartof>Journal of materials chemistry. 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title Hollow spherical SiO micro-container encapsulation of LiCl for high-performance simultaneous heat reallocation and seawater desalination
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