Toward low-emissivity passive heating: a supramolecular-enhanced membrane with warmth retention

Lei, Leqi; Wang, Dong; Shi, Shuo; Yang, Jieqiong; Su, Jing; Wang, Cong; Si, Ying; Hu, Jinlian

doi:10.1039/d3mh00768e

Mater. Horiz.

2023

DOI: 10.1039/d3mh00768e

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Toward low-emissivity passive heating: a supramolecular-enhanced membrane with warmth retention

Leqi Lei

Dong Wang

Shuo Shi

et al.

Abstract: Maintaining a reasonably stable body temperature is crucially vital for a variety of human activities in an energy-conservation strategy. However, it is well-known that metal-like materials, utilized as radiative reflectors...

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2024

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Cited by 9 publications

References 54 publications

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Direct Assembly of Aerogel Micro‐Nanofiber/MXene Sponges with Dual‐Network Structures for All‐Day Personal Heating

Wang,

Zhao,

Yang

et al. 2024

Adv Funct Materials

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Maintaining human body temperature under low temperature is crucial to human well‐being, thereby urgently requiring for high‐performance warmth retention materials. However, designing such materials with both mechanical robustness and warming up the human body under complex and changing outdoor environments remains challenging. Here, a dual‐network structured aerogel micro‐nanofiber/MXene sponge is directly synthesized by the synchronous occurrence of electrospinning and electrospraying. Tailoring phase inversion of the solution jet creates micro‐nanofibers with highly porous aerogel structures, which exhibit nanoscale aperture (30–60 nm) and high single fiber surface aera (56.5 m2 g−1). Under strong hydrogen bonding interaction, the dual‐network structures are constructed by chemical entanglement between aerogel micro‐nanofibers and self‐assembled MXene networks, achieving robust stretchable and compressible property. The nanopores of the single fiber cause the Knudsen effect to suppress the slippage of air molecules, thereby enhancing the unique capacity to block heat energy. Further integrating passive radiative heating and active heating performance of MXene networks, the as‐designed sponge offers an all‐day personal heating system to rise human skin temperature over 3.5 °C. This work may provide new candidates for the applications within aerospace, energy, transportation, and building.

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Direct Assembly of Aerogel Micro‐Nanofiber/MXene Sponges with Dual‐Network Structures for All‐Day Personal Heating

Wang,

Zhao,

Yang

et al. 2024

Adv Funct Materials

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Emerging Trends of Nanofibrous Piezoelectric and Triboelectric Applications: Mechanisms, Electroactive Materials, and Designed Architectures

Zhi,

Shi,

et al. 2024

Advanced Materials

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Over the past few decades, significant progress in piezo‐/tribo‐electric nanogenerators (PTEGs) has led to the development of cutting‐edge wearable technologies. Nanofibers with good designability, controllable morphologies, large specific areas, and unique physicochemical properties provide a promising platform for PTEGs for various advanced applications. However, the further development of nanofiber‐based PTEGs is limited by technical difficulties, ranging from materials design to device integration. Herein, we systematically review the current developments in PTEGs based on electrospun nanofibers. The review begins with the mechanisms of PTEGs and the advantages of nanofibers and nanodevices, including high breathability, waterproofness, scalability, and thermal–moisture comfort. In terms of materials and structural design, novel electroactive nanofibers and structure assemblies based on one‐dimensional micro/nanostructures, two‐dimensional bionic structures, and three‐dimensional multilayered structures are discussed. Subsequently, nanofibrous PTEGs in applications such as energy harvesters, personalized medicine, personal protective equipment, and human‐machine interactions are summarized. Nanofiber‐based PTEGs still face many challenges such as energy efficiency, material durability, device stability, and device integration. In the final section of this review, the research gap between research and practical applications of PTEGs is discussed, and emerging trends are proposed, providing some ideas for the development of intelligent wearables.This article is protected by copyright. All rights reserved

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Environment-adaptive phase-separation-porous fluorofilm for high-performance passive radiation cooling

Tang,

Li,

Meng

et al. 2024

Nano Res.

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Toward low-emissivity passive heating: a supramolecular-enhanced membrane with warmth retention

Abstract: Maintaining a reasonably stable body temperature is crucially vital for a variety of human activities in an energy-conservation strategy. However, it is well-known that metal-like materials, utilized as radiative reflectors...

Cited by 9 publications

References 54 publications

Direct Assembly of Aerogel Micro‐Nanofiber/MXene Sponges with Dual‐Network Structures for All‐Day Personal Heating

Direct Assembly of Aerogel Micro‐Nanofiber/MXene Sponges with Dual‐Network Structures for All‐Day Personal Heating

Emerging Trends of Nanofibrous Piezoelectric and Triboelectric Applications: Mechanisms, Electroactive Materials, and Designed Architectures

Environment-adaptive phase-separation-porous fluorofilm for high-performance passive radiation cooling

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