Radiative cooling assisted self-sustaining and highly efficient moisture energy harvesting

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 19, 2024

Abstract Harvesting electricity from ubiquitous water vapor represents a promising route to alleviate the energy crisis. However, existing studies rarely comprehensively consider impact of natural environmental fluctuations on electrical output. Here, we demonstrate bilayer polymer enabling self-sustaining and highly efficient moisture-electric generation hydrological cycle by establishing stable internal directed water/ion flow through thermal exchange with ambient environment. Specifically, radiative cooling effect hydrophobic top layer prevents excessive daytime evaporation solar absorption while accelerating nighttime moisture sorption. The introduction LiCl into bottom hygroscopic ionic hydrogel enhances sorption capacity facilitates ion transport, thus ensuring conversion. A single device unit (1 cm 2 ) can continuously generate voltage ~0.88 V current ~306 μA, delivering maximum power density ~51 μW −2 at 25 °C 70% relative humidity (RH). has been demonstrated operate steadily outdoors for continuous 6 days.

Language: Английский

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All-in-one hybrid atmospheric water harvesting for all-day water production by natural sunlight and radiative cooling

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(14), P. 4988 - 5001

Published: Jan. 1, 2024

A compact hybrid atmospheric water harvesting device for all-day production by synergistically energy from natural sunlight and the cold universe.

Language: Английский

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Solar-driven scalable hygroscopic gel for recycling water from passive plant transpiration and soil evaporation

Nature Water, Journal Year: 2024, Volume and Issue: 2(7), P. 663 - 673

Published: July 10, 2024

Language: Английский

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Moisture-based green energy harvesting over 600 hours via photocatalysis-enhanced hydrovoltaic effect

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

Harvesting the energy from interaction between hygroscopic materials and atmospheric water can generate green clean energy. However, ion diffusion process of moisture-induced dissociation leads to disappearance concentration gradient gradually, there is still a lack moisture-based power generation devices with truly continuous operation, especially duration current output needs be extended. Here, we propose design for reconstructing by coupling photocatalytic hydrogen evolution reaction hydrovoltaic effect, report moisture-enabled electric generator (MEG) output. We show that introduction layer not only absorbs light greatly increase MEG (500% density enhancement), but more importantly, consumes pre-stacked ions restore gradient, allowing continuously than 600 hours, which 1 2 orders magnitude higher great majority existed MEGs in terms duration. This study designs layer, achieving 500% enhancement over addressing challenge extended operation

Language: Английский

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Electricity generated by upstream proton diffusion in two-dimensional nanochannels

Nature Nanotechnology, Journal Year: 2024, Volume and Issue: 19(9), P. 1316 - 1322

Published: July 15, 2024

Language: Английский

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Silicon nanowire/ionic hydrogel-based hybrid moist-electric generators with enhanced voltage output and operational stability

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(11), P. 3788 - 3796

Published: Jan. 1, 2024

An organic–inorganic hybrid moist-electric generator outputs a voltage of 1.28 V and retains 60% the peak performance after 800 hours’ operation.

Language: Английский

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Hygroscopic salt-embedded composite materials for sorption-based atmospheric water harvesting

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 25, 2024

Language: Английский

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Advancing Efficiency in Solar-Driven Interfacial Evaporation: Strategies and Applications

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 8, 2025

Solar-driven interfacial evaporation (SDIE) has emerged as a promising technology for addressing global water scarcity by utilizing solar-thermal conversion and at the air/material/water interface. The exceptional performance of these systems attracted significant interest; it is imperative to establish rigorous scientific standards evaluating effectiveness, optimizing system design, ensuring efficient practical applications. In this Review, we propose consensus criteria accurately assessing guiding future advancements. We then explore fundamental mechanisms driving synergy, emphasizing how material compositions, microscopic hierarchical structures, macroscopic three-dimensional spatial architecture designs enhance solar absorption photothermal conversion; balance heat confinement with pathway optimization; manage salt resistance; regulate enthalpy during vaporization. These matched coordination strategies are crucial maximizing target SDIE efficiency. Additionally, investigate applications technologies, focusing on cutting-edge progress versatile purification, combined atmospheric harvesting, collection, electric generation, deicing. Finally, highlight challenges exciting opportunities advancing research, efforts integrate principles, system-level collaboration, application-driven approaches boost sustainable highly energy technologies. By linking evaluation optimization influencing factors, offer comprehensive overview field outlook that promotes clean production synergistic

Language: Английский

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Cactus-inspired moisture harvesting for sustainable and efficient high salinity desalination

Desalination, Journal Year: 2024, Volume and Issue: 583, P. 117738 - 117738

Published: May 11, 2024

Language: Английский

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Modeling of activated carbon and multi-scale molecular simulation of its water vapor adsorption: A review

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113732 - 113732

Published: Aug. 3, 2024

Language: Английский

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