Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance

Feng, Yingrui; Hu, Kang; Zhang, Min; Ding, Wei; Kong, Xiangkai; Sheng, Zhigao; Liu, Qiangchun

doi:10.1007/s10853-021-06650-2

Cited by 11 publications

(3 citation statements)

References 49 publications

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“…The excellent dispersion of CMX hybrids in the TPU matrix might be responsible for this. It could be explained that hydrogen bonding interactions between CMX hybrids and TPU matrix could hinder the breakage of TPU chains, enhancing the mechanical performance of TPU/CMX 1–3,40,41 …”

Section: Resultsmentioning

confidence: 99%

“…It could be explained that hydrogen bonding interactions between CMX hybrids and TPU matrix could hinder the breakage of TPU chains, enhancing the mechanical performance of TPU/CMX. [1][2][3]40,41 The improvement of mechanical performance was also implied by the DMA test, which measures the relationship between the mechanical properties of TPU composites over time, temperature, or frequency.…”

Section: Mechanical Properties Of Tpu and Its Compositesmentioning

confidence: 99%

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A rare‐earth‐based nano‐flame retardant with 2D MXene for improving fire safety and mechanical property of thermoplastic polyurethane composites

He,

Yin,

et al. 2024

Polymers for Advanced Techs

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A kind of rare earth flame retardant, two‐dimensional lamellar compounds (MXene) loading with cerium phosphate nanorod, MXene@CePO4 (CMX) was prepared by hydrothermal and electrostatic adsorption methods. It was then applied in thermoplastic polyurethane (TPU). With the 3 wt% addition of CMX improving the mass rate of residual char from 4.42 wt% to 11.33 wt% compared to pristine TPU, there were reductions of 53.8%, 12.3%, and 24.7% in peak heat release rate (pHRR), total heat release (THR), and smoke density maximum (Ds max), respectively. Moreover, the TPU/CMX composites were shown to have superior mechanical properties compared with pristine TPU. For TPU/CMX‐3.0, there was a visible improvement in tensile strength (TS) and elongation at break (EB) of 12.5% and 54.1% respectively, compared to pure TPU. The analysis of the flame retardancy mechanism of TPU/CMX shows that CMX plays an effective role in quenching free radicals in the gas phase and promotes char formation of TPU in the condense phase. Therefore, this paper offers a new solution for designing multifunctional rare earth flame retardants that are applied in TPU, thereby extending its application in industries and daily life.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanical Properties Of Tpu and Its Compositesmentioning

confidence: 99%

A rare‐earth‐based nano‐flame retardant with 2D MXene for improving fire safety and mechanical property of thermoplastic polyurethane composites

He,

Yin,

et al. 2024

Polymers for Advanced Techs

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show abstract

“…The binding energy peaks of La 3d in Figure 1S(a) centered at 851.2 and 834.1 eV can be assigned to La 3d 5/2 and 3d 3/2 , respectively. Two satellites peaks at 855.29 and 838.0 eV observed for La 3d are due to electron transition from the O 2p valence band to La 4f orbitals . The high elemental scan of Co 2p, which contains Co 2p1/2 peaks located at 795.0 and 780.07 eV, is shown in Figure 1S(b).…”

Section: Resultsmentioning

confidence: 99%

Flexible N-Doped Carbon Nanofiber-Polydimethylsiloxane Composite Containing La_0.85Sr₀.₁₅CoO_3−δ Nanoparticles for Green EMI Shielding

Sharma

James

2023

ACS Appl. Nano Mater.

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High-performance green electromagnetic interference (EMI) shielding materials are in great demand due to the growing need for portable electronic devices and high speed digital communication devices. Developing high-efficiency, lightweight, and flexible EMI shielding materials for practical applications is still a major challenge. Herein, we demonstrate a facile approach for fabricating thin and lightweight N-doped carbon nanofibers (CNFs) containing La 0.85 Sr 0.15 CoO 3−δ (LSCO) nanoparticles (NPs) (LSCO-CNFs) through electrospinning followed by heat treatment. CNFs incorporated with 25 wt % LSCO NPs (LSCO-CNFs-25) exhibited high electrical conductivity (2.1 S cm −1 ) and high EMI shielding effectiveness (EMI SE) of 45 dB with a low thickness (0.08 mm) in Xband, K u -band, and K-band (8.2−26.5 GHz). The material showed an absorption-dominated shielding mechanism due to formation of a 3D electrically conductive network, high interfacial polarization arising from the presence of LSCO NPs in CNFs, and the porous and layer-by-layer structure of CNFs. The flexible polydimethylsiloxane (PDMS) composites of LSCO-CNFs were prepared by hand lay-up methods for enhancing the mechanical properties and hydrophobicity. The LSCO-CNFs-25 PDMS composites exhibited a high EMI SE of 45.6 dB with a thickness of 0.62 mm. The LSCO-CNFs-PDMS composites are ideal for fabricating lightweight, thin, waterproof, flexible, and high-performance EMI shielding materials.

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Dynamically driven perovskite La-Fe-modified SrTiO3 nanocubes and their improved photoresponsive activity under visible light: influence of alkaline environment

Suwannaruang

Pratyanuwat

Sinthujariwat

et al. 2022

Environ Sci Pollut Res

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Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance

Cited by 11 publications

References 49 publications

A rare‐earth‐based nano‐flame retardant with 2D MXene for improving fire safety and mechanical property of thermoplastic polyurethane composites

A rare‐earth‐based nano‐flame retardant with 2D MXene for improving fire safety and mechanical property of thermoplastic polyurethane composites

Flexible N-Doped Carbon Nanofiber-Polydimethylsiloxane Composite Containing La_0.85Sr₀.₁₅CoO_3−δ Nanoparticles for Green EMI Shielding

Dynamically driven perovskite La-Fe-modified SrTiO3 nanocubes and their improved photoresponsive activity under visible light: influence of alkaline environment

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Engineering A-site cation deficiency into LaCoO3 thin sheets for improved microwave absorption performance

Cited by 11 publications

References 49 publications

A rare‐earth‐based nano‐flame retardant with 2D MXene for improving fire safety and mechanical property of thermoplastic polyurethane composites

A rare‐earth‐based nano‐flame retardant with 2D MXene for improving fire safety and mechanical property of thermoplastic polyurethane composites

Flexible N-Doped Carbon Nanofiber-Polydimethylsiloxane Composite Containing La0.85Sr0.15CoO3−δ Nanoparticles for Green EMI Shielding

Dynamically driven perovskite La-Fe-modified SrTiO3 nanocubes and their improved photoresponsive activity under visible light: influence of alkaline environment

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Flexible N-Doped Carbon Nanofiber-Polydimethylsiloxane Composite Containing La_0.85Sr₀.₁₅CoO_3−δ Nanoparticles for Green EMI Shielding