Haolun Wang

Nanjing University of Aeronautics and Astronautics

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Hui Wu

State Key Laboratory of New Ceramics and Fine Processing

Minghao Fang

China University of Geosciences (Beijing)

Haiyang Wang

Soochow University

Sen Lin

Southwest University of Science and Technology

Zhenglian Liu

China University of Geosciences (Beijing)

Jianan Song

Dalian Maritime University

Wei Pu

Sichuan University

Xinghai Pan

Nanjing University of Aeronautics and Astronautics

Xiaopeng Bai

Chinese University of Hong Kong

Kangkang Zou

Sichuan University

Cooperative Institutions

Tsinghua University

Sichuan University

State Key Laboratory of New Ceramics and Fine Processing

Chinese Academy of Sciences

Nanjing University of Aeronautics and Astronautics

Guangxi University

Tianjin University

Zhejiang University

University of California, Los Angeles

Chengdu University

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Ultralight, scalable, and high-temperature–resilient ceramic nanofiber sponges

Science Advances (2017)

Haolun Wang Xuan Zhang Ning Wang Yan Li Xue Feng

Scalable synthesis of ultralight, multifunctional, and high-temperature resilient ceramic nanofiber sponges by blow-spinning.

Sponge

Electrospinning

10.1126/sciadv.1603170

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Citations (252)

A flexible precontact sensor for CNT-Al2O3 fibers resistant to extreme temperatures

Nanoscale (2024)

Xinghai Pan Zisong Zhou Yan‐Ling Liu Yuhang Xiao Sen Lin

By means of atomic layer deposition (ALD) technology, different thicknesses of Al 2 O 3 dielectric layers can be deposited on surface of the carbon nanotube fiber (CNTF) to give it different colors and high temperature resistance sensing properties.

10.1039/d4nr01573h

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Citations (0)

New Soft Actuating Way by Rapidly Temperature Change of Electrocaloric Effect

ACS Applied Materials & Interfaces (2023)

X Li Jialong Yang Xinghai Pan Zisong Zhou Kangkang Zou

Compared to traditional temperature control methods, the electrocaloric (EC) effect offers several advantages such as small size, rapid response, and environmental friendliness. However, current EC effects are generally used for the cooling area rather than heating. Here, poly(vinylidenefluorideter-trifluoroethylene-ter-chlorofluoroethylene) [P(VDF-TrFE-CFE)] film is combined with an electrothermal actuator (ETA) composed of polyethylene (PE) film and carbon nanotube (CNT) film. The heating and cooling process of the EC effect is used to help drive the ETA. The P(VDF-TrFE-CFE) film can produce a temperature change (ΔT) of 3.7 °C at 90 MV/m, and this process occurs within 0.1 s. With this ΔT, the composite film actuator can produce a deflection of 10°. In addition, due to the electrostrictive effect of P(VDF-TrFE-CFE), the composite film can also be used as an actuator. At 90 MV/m, the composite film actuator can produce a deflection over 240° within 0.05 s. Apart from other current driving modes for thermally responsive actuators, in this paper, a new type of soft actuating composite film by the temperature change of the EC effect is proposed. Except from ETAs, the EC effect can also have a wide application prospect in other thermally responsive actuators, including shape memory polymer actuators, shape memory alloy actuators, and so on.

Electrostriction

10.1021/acsami.3c04913

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Efficient electromagnetic interference shielding of flexible Ag microfiber sponge/polydimethylsiloxane composite constructed by blow spinning

Composites Science and Technology (2022)

Kangkang Zou Shuangqin Yi Xueying Li Jie Li Yingte Xu

Polydimethylsiloxane

Microfiber

Gasket

10.1016/j.compscitech.2022.109281

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Citations (17)

An ultralight all‐fiber‐structure sponge with thermal and electromagnetic integrated insulation property

Journal of the American Ceramic Society (2024)

Liang Su Jiaxiang Lu Huan Zhang Xilin Li Jinbo Wang

Abstract The integration of thermal and electromagnetic interference (EMI) insulation is of great significance for fields such as aerospace that face extreme environments. The challenge lies in ensuring that the protective layer is lightweight while simultaneously possessing the ability to suppress heat conduction, heat convection, thermal radiation, and electromagnetic radiation. To address these challenges, we propose a novel ultralight all‐fiber‐structure composite sponge, yttria‐stabilized zirconia/polyvinyl butyral‐supported silver (YAP) nanofiber sponge, with ultralight mass (∼65 mg/cm 3 ), exceptionally low thermal conductivity (21 mW/m K at 25°C, and 329 mW/m K at 500°C), and remarkable EMI shielding effectiveness (∼62.6 dB). Moreover, benefiting from its all‐fiber‐structure, the YAP nanofiber sponge can endure 100 cycles of compression up to 50% of its original volume while retaining its mechanical properties with minimal degradation. These characteristics render YAP nanofiber sponge an ideal material for integrated thermal and EMI insulation, offering a promising solution to the rigorous demands of extreme environment protection such as space exploration.

Sponge

10.1111/jace.19902

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Significantly Enhanced Uranium Extraction from Seawater with Mass Produced Fully Amidoximated Nanofiber Adsorbent

Advanced Energy Materials (2018)

Dong Wang Jianan Song Jun Wen Yihui Yuan Zhenglian Liu

Abstract The oceans contain hundreds of times more uranium than terrestrial ores. Fiber‐based adsorption is considered to be the most promising method to realize the industrialization of uranium extraction from seawater. In this work, a pre‐amidoximation with a blow spinning strategy is developed for mass production of poly(imide dioxime) nanofiber (PIDO NF) adsorbents with many chelating sites, excellent hydrophilicity, 3D porous architecture, and good mechanical properties. The structural evidences from 13 C NMR spectra confirm that the main functional group responsible for the uranyl binding is not “amidoxime” but cyclic “imidedioxime.” The uranium adsorption capacity of the PIDO NF adsorbent reaches 951 mg‐U per g‐Ads in uranium (8 ppm) spiked natural seawater. An average adsorption capacity of 8.7 mg‐U per g‐Ads is obtained after 56 d of exposure in natural seawater via a flow‐through column system. Moreover, up to 98.5% of the adsorbed uranium can be rapidly eluted out and the adsorbent can be regenerated and reused for over eight cycles of adsorption–desorption. This new blow spun PIDO nanofabric shows great potential as a new generation adsorbent for uranium extraction from seawater.

Uranyl

10.1002/aenm.201802607

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Citations (349)

Highly Flexible Indium Tin Oxide Nanofiber Transparent Electrodes by Blow Spinning

ACS Applied Materials & Interfaces (2016)

Haolun Wang Suiyang Liao Xiaopeng Bai Zhenglian Liu Minghao Fang

Transparent conductive film (TCF) has found wide applications. Indium tin oxide (ITO) is currently the most widely used transparent electrode. However, major problem of ITO is the lacking of flexibility, which totally limits its applications. Here, we report a highly flexible transparent electrode consisting of freestanding ITO nanofiber network fabricated by blow spinning, the advantage of which is its high-efficiency, low cost and safety. When the bending radius decreased to 0.5 mm, the resistance of the transparent electrodes only increased by 18.4%. Furthermore, the resistance was almost unchanged after thousands of bending cycles at 3.5 mm bending radius.

Indium tin oxide

Bend radius

Transparent conducting film

10.1021/acsami.6b13255

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Citations (45)

Al/CuO@CNFs Conductive Flexible Energetic Films with High Electrical Safety

ACS Applied Materials & Interfaces (2023)

Haolun Wang Baiquan Chen Yu-Tao Wang Zhenguo Pang Jie Pan

The development of energetic materials with both high energy and high safety has always been the focus of the field of energetic materials. In this paper, a low-current-sensitivity flexible energetic film composed of carbon nanofibers (CNFs)-coated Al/CuO metastable intermolecular composites (MICs) was prepared by a blow-spinning combined with controlled heat treatment technique. Hotspots can hardly generate in this kind of energetic film due to the increased electrical and thermal conductivity, leading to low sensitivity of MICs. It evenly stays at a high voltage (60 V) for 24 h without raising the temperature significantly. The energetic films keep the high energy release of MICs due to the additional violent reactions between CuO and CNFs as well as the light weight of CNFs, showing the heat release of 2864 J/g. In addition, the obtained films exhibit good mechanical properties and can maintain the structural integrity after 1000 cycles of repeated bending to a 6 mm curvature radius. The above characteristics reveal that energetic films presented in this paper have certain safety, high energy, and flexibility and have potential applications in transient electronics with flexible requirements such as micro-electromechanical system.

Electric potential energy

Bend radius

10.1021/acsami.2c22819

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Citations (5)

A Flexible Silver‐Hollow‐Fiber Film by Blow‐Spinning and UV‐Induced Microstructural Engineering for High‐Efficiency Electromagnetic Interference Shielding

Advanced Materials Technologies (2023)

Huan Zhang Jufeng Huang Yu Wang Yaxian Qin Jiaxiang Lu

Abstract As the prevalence of electromagnetic interference (EMI) continues to rise, there is a growing demand for shielding materials, which play a crucial role in electronic devices, communication systems, health protection, etc. However, conventional EMI shielding materials encounter difficulties in effectively addressing the escalating intricacies of electromagnetic environments and diverse shielding scenarios, wherein foldability, flexibility, and lightweight are desired. In this work, a novel EMI shielding material, silver‐hollow‐fiber (AgHF), is developed by combining blow‐spinning, UV radiation, and temperature‐controlled annealing technologies. During the fabrication process, UV radiation is used to selectively reduce silver ions on the outer surface of precursor fiber, and temperature‐controlled annealing is further employed to remove the inside polymer, forming a hollow fiber structure. The AgHF exhibits superior flexibility, lightweight, remarkable mechanical stability, and excellent EMI shielding efficiency (SE). Particular, the AgHF with a thickness of 163 µm demonstrates an EMI SE of 101.65 dB, and with minimal degradation of less than 10% even after undergoing 2000 bending cycles. The remarkable EMI shielding performance, combined with the lightweight, flexibility, and mechanical stability of AgHF, positions it as a highly promising material for a wide range of EMI shielding applications in the future.

Electromagnetic Compatibility

10.1002/admt.202301333

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Citations (2)

Flexible Electrodes: Roll‐to‐Roll Production of Transparent Silver‐Nanofiber‐Network Electrodes for Flexible Electrochromic Smart Windows (Adv. Mater. 41/2017)

Advanced Materials (2017)

Sen Lin Xiaopeng Bai Haiyang Wang Haolun Wang Jianan Song

Roll-to-roll processing

Electrochromic devices

10.1002/adma.201770300

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Citations (4)