Preparation of ultrafine flexible alumina fiber for heat insulation by the electrospinning method

Wang, Nan; Xie, Yongshuai; Lv, Junai; Zhang, Jian; Zhu, Luyi; Jia, Zhitai; Tao, Xiaofeng

doi:10.1016/j.ceramint.2022.03.249

Cited by 9 publications

(13 citation statements)

References 31 publications

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“…For samples calcined at 1000 and 1200 °C, the diffraction peaks corresponded almost exactly to the Al 2 (SiO 4 )O standard card (PDF#04-008-0812), and the peak intensity increased as the temperature increased. There were no crystalline peaks for samples calcined at 800 and 600 °C, suggesting that fibers calcined at these temperatures are amorphous. , The Al 2 SiO 5 fiber in its amorphous state is good for its flexibility; it corresponds to the good flexibility of the fibers calcined below 1000 °C.…”

Section: Preparation and Characterization Of Fibersmentioning

confidence: 91%

“…Figure a displays the thermogravimetric (TG) curves of the precursor fibers.The weight loss of the sample from room temperature to 170 °C is primarily attributed to the removal of physically adsorbed water and the decomposition of ethanol molecules, , the weight loss observed between 170 and 300 °C can be attributed to the decomposition of aluminum nitrate, and from 300 to 630 °C, the weight loss is primarily attributed to the decomposition of organic matter in the precursors. When exceeding 630 °C, the weight of the sample is almost constant, which suggests that the organic matter has been fully decomposed at 630 °C; this also corresponded to the results of infrared spectrum analysis.…”

Section: Preparation and Characterization Of Fibersmentioning

confidence: 98%

“…There were no crystalline peaks for samples calcined at 800 and 600 °C, suggesting that fibers calcined at these temperatures are amorphous. 36,40 The Al 2 SiO 5 fiber in its amorphous state is good for its flexibility; it corresponds to the good flexibility of the fibers calcined below 1000 °C.…”

Section: Properties Of the Al 2 Siomentioning

confidence: 99%

“…We compared the Al 2 SiO 5 sample prepared in this work with several other fiber materials (Figure a). Wang et al prepared ultrafine Al 2 O 3 fibers with thermal conductivities of 0.169, 0.171, 0.172, 0.196, and 0.241 W/(m·K) at 30, 200, 400, 600, and 800 °C, respectively. Tian et al prepared hollow silicon carbide (HSiC) fibers showing outstanding thermal insulation performance with a low thermal conductivity of 0.1049 W/(m·K) at 800 °C.…”

Section: Preparation and Characterization Of Fibersmentioning

confidence: 99%

“…Numerous researchers have examined ceramic nanofiber materials prepared by electrospinning and found that these materials have good performance for thermal insulation, high-temperature resistance, corrosion resistance, and mechanical properties. Wang et al 36 developed highly flexible alumina nanofibers by electrospinning and subsequent heat treatment, with a thermal conductivity of only 0.318 W/(m•K) at 1000 °C. Fan et al 37 prepared γ-Y 2 Si 2 O 7 fiber felt using a simple method that combined Y-Si-O/PVB sol−gel electrospinning, achieving a low thermal conductivity of 0.052 W/(m•K).…”

Section: Introductionmentioning

confidence: 99%

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Flexible Al₂SiO₅ Nanofiber Membranes for Thermal Insulation in Lithium-Ion Batteries

Zhao,

Wang,

Liu

et al. 2024

ACS Appl. Nano Mater.

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The performance loss in extreme environmental temperatures and thermal runaway (TR) is a major drawback of lithium-ion batteries (LIBs), raising significant concern. This study employed electrospinning to prepare flexible Al 2 SiO 5 nanofiber membranes for thermal insulation in batteries. These membranes exhibited low thermal conductivities of 0.03487, 0.03512, and 0.07384 W/(m•K) at −25, 25, and 800 °C, respectively, indicating that these membranes are excellent for thermal insulation. With the fiber membrane in place, the cell surface temperature changed slower toward ambient temperature than the control group. During charging and discharging at −25 °C, batteries wrapped with the fiber membrane exhibited a significantly higher capacity than the control group. In the case of thermal abuse, the battery module with fibers exhibited a 1608 s delay from the heating start to the TR onset compared to the battery module without membranes, and the time gap between safety valve rupture to TR onset was also 503 s more than the battery module without membranes. The fiber membranes have less effect on the surrounding cells than the control group, thus significantly improving battery safety.

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Section: Preparation and Characterization Of Fibersmentioning

confidence: 91%

Section: Preparation and Characterization Of Fibersmentioning

confidence: 98%

Section: Properties Of the Al 2 Siomentioning

confidence: 99%

Section: Preparation and Characterization Of Fibersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Flexible Al₂SiO₅ Nanofiber Membranes for Thermal Insulation in Lithium-Ion Batteries

Zhao,

Wang,

Liu

et al. 2024

ACS Appl. Nano Mater.

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Multifunctional Submicron SiC Fibers for Extreme Environments: Superior Electromagnetic Absorption and High‐Temperature Performance

Kang,

Shen,

Yang

et al. 2024

Adv Funct Materials

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The development of radar stealth for high‐speed flight vehicles and aviation engines requires novel flexible fiber materials that can not only withstand high temperatures, but also exhibit superior electromagnetic wave absorption. This study addresses this challenge by reporting the successful fabrication of submicron‐diameter (≈700 nm) SiC fibers with excellent properties. These fibers achieve the best electromagnetic wave absorption performance (−63.34 dB) among all the ceramic fibers, maintaining high‐temperature stability up to 1800 °C. They also demonstrate excellent oxidation resistance (1400 °C) and thermal insulation (0.273 W m−1 K−1 at 1200 °C). Furthermore, the fibers exhibit excellent corrosion resistance, prominent hydrophobic properties, reliable filtering quality, and excellent flexibility. This study overcomes the limitations of conventional multifunctional micro/nanofibers by achieving superior high‐temperature performance and electromagnetic absorption. These SiC fibers are promising materials for structural and functional integration in extreme environments.

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Fine‐Grain High‐Performance Densified Oxide Fibers Produced by Open Ultrafast High‐Temperature Sintering

Wang,

Qin,

Chen

et al. 2024

Advanced Materials

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The considerable grain growth occurring during the long‐term high‐temperature sintering of polycrystalline oxide fibers negatively affects their mechanical properties, which highlights the need for alternative sintering methods. Herein, open ultrafast high‐temperature sintering (OUHS) in air, characterized by rapid heating/cooling (>10000 K min−1) and a short high‐temperature holding time (<10 s), is used to produce 3 mol% yttria‐stabilized zirconia continuous fibers with coherent boundaries forming robust connections between fine grains. The tensile strength of these fibers (2.33 GPa on average, sintering temperature = 1673 K) notably exceeds that of their counterparts produced by traditional sintering (1.17 GPa). The effects of pores on fiber mechanical properties are analyzed using experimental and theoretical methods. For a versatility demonstration, OUHS is applied to several types of polycrystalline oxide fibers (HfO2, Al2O3, TiO2, Y2O3, and La2Zr2O7), considerably improving their mechanical properties and enabling crystalline phase control, which demonstrates the suitability of this procedure for the development of high‐performance materials.

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Preparation of ultrafine flexible alumina fiber for heat insulation by the electrospinning method

Cited by 9 publications

References 31 publications

Flexible Al₂SiO₅ Nanofiber Membranes for Thermal Insulation in Lithium-Ion Batteries

Flexible Al₂SiO₅ Nanofiber Membranes for Thermal Insulation in Lithium-Ion Batteries

Multifunctional Submicron SiC Fibers for Extreme Environments: Superior Electromagnetic Absorption and High‐Temperature Performance

Fine‐Grain High‐Performance Densified Oxide Fibers Produced by Open Ultrafast High‐Temperature Sintering

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Preparation of ultrafine flexible alumina fiber for heat insulation by the electrospinning method

Cited by 9 publications

References 31 publications

Flexible Al2SiO5 Nanofiber Membranes for Thermal Insulation in Lithium-Ion Batteries

Flexible Al2SiO5 Nanofiber Membranes for Thermal Insulation in Lithium-Ion Batteries

Multifunctional Submicron SiC Fibers for Extreme Environments: Superior Electromagnetic Absorption and High‐Temperature Performance

Fine‐Grain High‐Performance Densified Oxide Fibers Produced by Open Ultrafast High‐Temperature Sintering

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About

Flexible Al₂SiO₅ Nanofiber Membranes for Thermal Insulation in Lithium-Ion Batteries

Flexible Al₂SiO₅ Nanofiber Membranes for Thermal Insulation in Lithium-Ion Batteries