Carbon-Nanotube-Doped Aerogels Comprised of Ordered Curvature Nanofibers with Polysilazane as Shell and Nomex as Core for Crack-Resistant Thermally Insulating Structural Composites DOI

Jingguo Liu,

Haiming Li, Hongyan Li

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

The polymer-derived ceramics (PDCs) aerogels have been extensively employed in the field of high-temperature thermal insulation with unique nanoporous structures and excellent chemical stability. However, conventional ceramic were susceptible to structural collapse volume shrinkage during pyrolysis process, leading strength degradation reduced insulation. In this article, an ordered curvature structure was fabricated avoid defects inferior mechanical properties composites caused by precursor polymers process. fiber aerogel obtained through off-center coaxial electrospinning combined a transformation. effective load transfer along axial direction helical fibers facilitated rapid stress dissipation pyrolysis, thereby preventing damage. multilayered heterogeneous interfaces within imparted exceptional (0.0349 W/m·K). mechanism endowed properties, allowing it exhibit significant stability under reversible cycle compression. render them promising wide range applications protection systems.

Language: Английский

Biomimetic functional Aerogels: From design Strategy, preparation to application advances DOI
Fengyi Wang, Zhixiong Huang, Bo Xu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160511 - 160511

Published: Feb. 1, 2025

Language: Английский

Citations

1
Recent Development of Thermal Insulating Materials for Li-Ion Batteries DOI Creative Commons
Ting Quan, Qi Xia, Xiaoyu Wei

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(17), P. 4412 - 4412

Published: Sept. 3, 2024

As one of the core components electric vehicles, Li-ion batteries (LIBs) have attracted intensive attention due to their high energy density and good long-term cycling stability. However, some abuse conditions inevitably occur during battery operation, resulting in safety accidents such as thermal runaway (TR) LIBs. Therefore, efficient appropriate insulation material design is crucial for LIB packs effectively reduce or even inhibit spread TR. Based on it, this review, we present principle influences TR provide necessity management insulating materials. Then, deeply discuss compare two kinds representative materials: phase change materials barrier-type Their properties, synthesis methods, modification means are investigated guidance future application high-performance field

Language: Английский

Citations

4
In Situ Hierarchical Polymerization Enables Ambient-Pressure Drying of High-Performance Al2O3–SiO2 Aerogel Composites for Battery Thermal Protection DOI
Longlong Li,

Mingyuan Yan,

Zun Zhao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Ambient pressure drying (APD) is an effective method for producing Al2O3-SiO2 aerogels thermal insulation, with hydrophobic modification crucial APD success. However, challenges persist in combining insulation mechanical strength due to the hindrance of doping Al on and inherent brittleness pure aerogels. We present situ hierarchical polymerization strategy, where subsequently formed Si-O-Si network protects preferentially polymerized Al-O-Al network, enabling successful APD. Mullite fibers are incorporated create a load-bearing framework, surrounded by 3D aerogel matrix from nanoparticle aggregates. The nano serves as unit creates compartments suppress diffusion. resulting mullite fiber-reinforced composites (MF/ASAs) demonstrate high compressive (0.41 MPa at 10% strain), excellent fatigue resistance (2.39% plastic deformation after 1000 cycles), superior properties (thermal conductivity: 0.034 W·m-1·K-1 25 °C 0.081 °C). A 2 mm-thick MF/ASA effectively blocked runaway lithium battery modules, 526 maximum cell-to-cell temperature gap. This approach enables cost-effective, scalable applications high-temperature fields.

Language: Английский

Citations

0
Mesoscale Filamentous Polyelectrolytes: Chemical Functionalization and Fluidic Structure DOI Open Access
Cornelia Meissner, Alfred J. Crosby, Todd Emrick

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Abstract The preparation and study of synthetic mesoscale structures opens opportunities to understand soft materials properties at length scales that are intermediate between the molecular bulk, often referred as mesoscale. This paper details polymer filaments, prepared by flow coating evaporative deposition from solution yield filamentous versions charged polymers. Using thiol‐ene reactions on olefin‐containing ribbons, anionic character in form carboxylates is introduced structures. resultant ribbons exhibit morphological changes a function their aqueous environment, based neutral versus character, offering insights into structure morphology small, multi‐length scale, comprised macromolecular materials.

Language: Английский

Citations

0
One-pot low-temperature preparation of thermo-responsive self-ceramifiable glass fiber insulation tiles with exceptional mechanical and ablative properties DOI Creative Commons

Fengchun Ji,

Zhao-Xiang Peng,

Xin Yang

et al.

Journal of Materials Research and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Elastic and Compressive Barium Aluminosilicate Nanofibrous Sponge for Thermal Insulation up to 1400 °C DOI
Hongbo Guo,

Hualei Liu,

Liang Wei

et al.

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

Published: May 1, 2025

Language: Английский

Citations

0
Carbon-Nanotube-Doped Aerogels Comprised of Ordered Curvature Nanofibers with Polysilazane as Shell and Nomex as Core for Crack-Resistant Thermally Insulating Structural Composites DOI

Jingguo Liu,

Haiming Li, Hongyan Li

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

The polymer-derived ceramics (PDCs) aerogels have been extensively employed in the field of high-temperature thermal insulation with unique nanoporous structures and excellent chemical stability. However, conventional ceramic were susceptible to structural collapse volume shrinkage during pyrolysis process, leading strength degradation reduced insulation. In this article, an ordered curvature structure was fabricated avoid defects inferior mechanical properties composites caused by precursor polymers process. fiber aerogel obtained through off-center coaxial electrospinning combined a transformation. effective load transfer along axial direction helical fibers facilitated rapid stress dissipation pyrolysis, thereby preventing damage. multilayered heterogeneous interfaces within imparted exceptional (0.0349 W/m·K). mechanism endowed properties, allowing it exhibit significant stability under reversible cycle compression. render them promising wide range applications protection systems.

Language: Английский

Citations

0