Electrospun carbon nanofiber-based flexible films for electric heating elements with adjustable resistance, ultrafast heating rate, and high infrared emissivity

Li, Zhenwei; Lin, Zijia; Han, Meisheng; Mu, Yongbiao; Yu, Jie

doi:10.1007/s10853-021-06074-y

Cited by 16 publications

(6 citation statements)

References 53 publications

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“…It may be noted that the CVD method has the best capability to produce short fibers, whereas the electrospinning technique produced long and continuous fibers. Short fibers are somewhat hard to align and assemble to be used for further processing …”

Section: Cnfs: Structure Synthesis and Propertiesmentioning

confidence: 99%

“…Short fibers are somewhat hard to align and assemble to be used for further processing. 69 Composite nanofibers find enormous applications in EESDs and have also been fabricated extensively by introducing precursors of the active materials into either the electrospinning precursor reactants 70,71 or electrospun CNFs through the other growth approaches. 72,73 A schematic representation of the construction of Co 1−x S-CNFs composites by the electrospinning route is displayed in Figure 3a.…”

Section: ■ Introductionmentioning

confidence: 99%

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Versatile Graphitized Carbon Nanofibers in Energy Applications

Sharma

Basu

Shetti

et al. 2022

ACS Sustainable Chem. Eng.

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Graphitized carbon nanofibers (CNFs) are the allotropic forms of carbon that offer exceptional electrical conductivity, high aspect ratio, large surface-to-volume ratio, flexibility, mechanical robustness, and structural stability. These properties render CNFs as useful materials in energy applications, including water electrocatalysis and electrochemical energy storage devices (EESDs). Graphitized CNFs manifest huge versatility in EESDs and have been employed as electrode materials, as supports for other electrode materials, and conductive additives. This perspective summarizes the production methods, structural aspects, and energy applications of graphitized CNFs. Different design strategies have been employed to produce CNFs with diverse and distinct morphologies and structures. Their fabrication methods, along with precursors and dopants or cocatalysts, impact the overall structural, functional, and topographical properties. Recent developments on the state-of-the-art interests of graphitic CNFs in lithium-ion batteries (LIBs), lithium−sulfur (Li−S) batteries, vanadium redox flow batteries (VRFBs), supercapacitors, and water splitting have explored the many possibilities in energy sectors. The assembly and functioning of CNFs in water splitting and EESDs as well as primary challenges are discussed in this perspective.

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Section: Cnfs: Structure Synthesis and Propertiesmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Versatile Graphitized Carbon Nanofibers in Energy Applications

Sharma

Basu

Shetti

et al. 2022

ACS Sustainable Chem. Eng.

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“…In recent years, electric heating has gradually permeated daily life, in line with the continuous progress in science and technology and improvements in environmental awareness [ 1 , 2 ]. Compared with metal-based electric heating materials, carbon-based materials have received widespread attention due to their advantages of high-temperature resistance and stability and high electric conversion efficiency [ 3 , 4 ]. Such electric heating materials include graphite [ 5 ], carbon black [ 6 ], graphene [ 7 ], and carbon nanotubes [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube Films with Fewer Impurities and Higher Conductivity from Aqueously Mono-Dispersed Solution via Two-Step Filtration for Electric Heating

Chu,

Sun,

Wang

et al. 2024

Nanomaterials

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With the intensification of global climate problems, electric heating has recently attracted much attention as a clean and low-carbon heating method. Carbon nanotubes (CNTs) are an ideal medium for electric heating applications due to their excellent mechanical, electrical, and thermal properties. The preparation of electrothermal films based on an aqueous CNT dispersion as a raw material is environmentally friendly. However, in the traditional one-step filtration method, the residual excess dispersant and the small aspect ratio of the CNTs in the preparation process limit the performance of electrothermal CNT films. In this paper, we report a two-step filtration method that removes the free dispersant and small CNTs in the first filtration step and obtains denser CNT films by controlling the pores of the filter membrane in the second filtration step. The results suggest that, compared to the CNT1 film obtained from one-step filtration, the CNT1-0.22 film, obtained from two-step filtration using 1 and 0.22 μm membranes, has a smoother and flatter surface, and the surface resistance is 80.0 Ω sq−1, which is 29.4% lower. The convective radiation conversion efficiency of the CNT1-0.22 film is 3.36 mW/°C, which is 36.1% lower. We anticipate that such CNT films could be widely applied in building thermal insulation and underfloor heating.

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“…In view of less pollution and energy conservation, infrared heating and drying technique is being utilized in many industries. Hereby, high infrared radiation materials, as the main component of infrared radiation coatings, have been widely applied in high‐temperature furnaces, infrared heaters, aerospace fields, and electronic and electrical industries due to their excellent radiation power, durability to high‐temperature oxidation, and high infrared emissivity 3–5 . As a consequence, there is an increasing demand for high infrared emissivity materials.…”

Section: Introductionmentioning

confidence: 99%

Band gap and oxygen vacancy engineering of honeycomb‐like CuFe₂O₄ spinels toward enhanced high infrared emissivity

et al. 2023

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Recently, copper ferrites have acquired widespread attraction in high infrared radiation fields owing to their remarkable cost efficiency. However, to achieve broader applications under various operating conditions, it is essential to further improve the infrared emissivity, particularly at high temperatures. Herein, the Ni‐doped CuFe2O4 (NCFO) honeycomb‐like frameworks, which are constructed with single‐crystal nano‐subunits, are successfully fabricated via the scalable sol–gel avenue. The unique porous honeycomb framework endows NCFO with enhanced infrared absorption and relieves the stress between coatings and substrates meanwhile. With both band gap and oxygen vacancy (OV) engineering of CuFe2O4 itself via smart Ni doping, a maximum lattice strain, the richest OVs, and the narrowest band gap (∼1.63 eV) are simultaneously achieved for the CuFe2O4 with 15% Ni doping (denoted as CNFO‐15). Benefiting from the synergy of these external and intrinsic contributions, the CNFO‐15 possesses an ultrahigh infrared emissivity (∼0.975) in the wavelength range of 3–5 µm at a test temperature of 800°C. Moreover, the CNFO‐15‐based coating displays superior infrared radiation performance with outstanding high‐temperature resistance. More meaningfully, the constructive design here will provide a distinctive perspective for future large‐scale fabrication of advanced high‐infrared‐emissivity coatings.

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Electrospun carbon nanofiber-based flexible films for electric heating elements with adjustable resistance, ultrafast heating rate, and high infrared emissivity

Cited by 16 publications

References 53 publications

Versatile Graphitized Carbon Nanofibers in Energy Applications

Versatile Graphitized Carbon Nanofibers in Energy Applications

Carbon Nanotube Films with Fewer Impurities and Higher Conductivity from Aqueously Mono-Dispersed Solution via Two-Step Filtration for Electric Heating

Band gap and oxygen vacancy engineering of honeycomb‐like CuFe₂O₄ spinels toward enhanced high infrared emissivity

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Electrospun carbon nanofiber-based flexible films for electric heating elements with adjustable resistance, ultrafast heating rate, and high infrared emissivity

Cited by 16 publications

References 53 publications

Versatile Graphitized Carbon Nanofibers in Energy Applications

Versatile Graphitized Carbon Nanofibers in Energy Applications

Carbon Nanotube Films with Fewer Impurities and Higher Conductivity from Aqueously Mono-Dispersed Solution via Two-Step Filtration for Electric Heating

Band gap and oxygen vacancy engineering of honeycomb‐like CuFe2O4 spinels toward enhanced high infrared emissivity

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Band gap and oxygen vacancy engineering of honeycomb‐like CuFe₂O₄ spinels toward enhanced high infrared emissivity