Ultrathin Aerogel Micro/Nanofiber Membranes with Hierarchical Cellular Architecture for High-Performance Warmth Retention

Tian, Yucheng; Wang, Sai; Yang, Ming; Liu, Shude; Yu, Jianyong; Zhang, Shichao; Ding, Bin

doi:10.1021/acsnano.3c08930

Cited by 6 publications

References 53 publications

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Loofah‐Inspired Ultralight and Superelastic Micro/Nanofibrous Aerogels for Highly Efficient Thermal Insulation

Zhang,

Liang,

Wang

et al. 2024

Adv Funct Materials

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Extreme cold events are becoming more frequent and intense around the world, imposing a huge burden on human health and global economy. However, developing fibrous materials featuring ultralight weight, high shape retention, and high thermal insulation to withstand extreme conditions remains a great challenge. Herein, inspired by the natural porous loofah, an ultralight and superelastic micro/nanofibrous aerogel (MNFA) that integrates hierarchical pores and stable physical entanglements is directly synthesized via gelation electrospinning technology. By manipulating the solution/water molecules interaction of the charged jets, a hierarchical porous structure consisting of fibrous porous networks and aerogel microfibers is developed, which endows MNFA with high porosity (99.7%). Benefiting from the stable physical entanglement structure between the rigid microfibers and flexible nanofibers, the resulting MNFA can withstand large tensile stress (4000 times of its weight) and 1000 compression cycles without being damaged. Moreover, MNFA exhibits ultralight feature (3 mg cm−3) and high thermal insulation performance (low thermal conductivity of 25.3 mW m−1 K−1), making a promising contender for highly efficient thermal insulation. This work can offer fresh perspectives on the design and advancement of advanced fibrous aerogels for a variety of uses.

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Loofah‐Inspired Ultralight and Superelastic Micro/Nanofibrous Aerogels for Highly Efficient Thermal Insulation

Zhang,

Liang,

Wang

et al. 2024

Adv Funct Materials

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Cold protection made easy: A fiber-based fabric with enhanced sunlight absorption and unidirectional sweat transport

Chen,

Yue,

Yang

et al. 2024

Chemical Engineering Journal

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Ultrathin aerogel-structured micro/nanofiber metafabric via dual air-gelation synthesis for self-sustainable heating

Tian,

Chen,

Wang

et al. 2024

Nat Commun

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Incorporating passive heating structures into personal thermal management technologies could effectively mitigate the escalating energy crisis. However, current passive heating materials struggle to balance thickness and insulating capability, resulting in compromised comfort, space efficiency, and limited thermoregulatory performance. Here, a dual air-gelation strategy, is developed to directly synthesize ultrathin and self-sustainable heating metafabric with 3D dual-network structure during electrospinning. Controlling the interactions among polymer, solvent, and water enables the microphase separation of charged jets, while adjusting the distribution of carbon black nanoparticles within charged fluids to form fibrous networks composed of interlaced aerogel micro/nanofibers with heat storage capabilities. With a low thickness of 0.18 mm, the integrated metafabric exhibits exceptional thermal insulation performance (15.8 mW m −1 K −1 ), superhydrophobicity, enhanced mechanical properties, and high breathability while maintaining self-sustainable radiative heating ability (long-lasting warming of 8.8 °C). This strategy provides rich possibilities to develop advanced fibrous materials for smart textiles and thermal management.

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Ultrathin Aerogel Micro/Nanofiber Membranes with Hierarchical Cellular Architecture for High-Performance Warmth Retention

Cited by 6 publications

References 53 publications

Loofah‐Inspired Ultralight and Superelastic Micro/Nanofibrous Aerogels for Highly Efficient Thermal Insulation

Loofah‐Inspired Ultralight and Superelastic Micro/Nanofibrous Aerogels for Highly Efficient Thermal Insulation

Cold protection made easy: A fiber-based fabric with enhanced sunlight absorption and unidirectional sweat transport

Ultrathin aerogel-structured micro/nanofiber metafabric via dual air-gelation synthesis for self-sustainable heating

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