Study of carbonization behavior of polyacrylonitrile/tin salt as anode material for lithium‐ion batteries

Wang, Haiying; Xiu, Zhang; Zhang, Yaojie; Cheng, Na; Yu, Tingyue; Yang, Yang; Yang, Gang

doi:10.1002/app.43914

Cited by 12 publications

(6 citation statements)

References 46 publications

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“…In the present study, we set the oxidation and stabilizing temperature at 275 • C. At this temperature, the colour of the polymer changed from white into yellowish brown. This is an indication that the linear structure of the PAN polymer was cyclized and converted into a non-meltable ladder structure as reported earlier in several other papers [23][24][25]. Since the absorbed oxygen entered into the PAN to form new functional groups, the initial stage of the treatment mainly caused the oxidization and stabilization of the polymer [26,27].…”

Section: Structure Of the Composite Fibersupporting

confidence: 69%

Processing Iron Oxide Nanoparticle-Loaded Composite Carbon Fiber and the Photosensitivity Characterization

Gan

Panahi

et al. 2019

Fibers

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In this work, iron oxide nanoparticle loaded carbon fibers were prepared by electrohydrodynamic co-casting a polymer and particle mixture followed by carbonization. The precursor used to generate carbon fibers was a linear molecular chain polymer: polyacrylonitrile (PAN). A solution containing iron (II, III) oxide (Fe3O4) particles and the PAN polymer dissolved in dimethylformamide (DMF) was electrohydrodynamically co-cast into fibers. The fibers were stabilized in air and carbonized in hydrogen at elevated temperatures. The microstructure and composition of the fibers were analyzed using scanning electron microscopy (SEM). A quantitative metallographic analysis method was used to determine the fiber size. It was found that the iron (II, III) oxide particles distributed uniformly within the carbonized fibers. Photosensitivity of the particle containing fibers was characterized through measuring the open circuit potential of the fiber samples under the visible light illumination. Potential applications of the fibers for photovoltaics and photonic sensing were discussed.

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Section: Structure Of the Composite Fibersupporting

confidence: 69%

Processing Iron Oxide Nanoparticle-Loaded Composite Carbon Fiber and the Photosensitivity Characterization

Gan

Panahi

et al. 2019

Fibers

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“…For the large specific surface area and porous structure, metal-organic framework (MOF) derivatives are gradually being used in energy storage fields, including batteries and capacitors [30][31][32][33][34][35][36][37]. For example, Bian et al [37] fabricated Sn-MOF via a feasible hydrothermal method and used it as a self-sacrificing precursor to derive into core-shell composite materials, in which SnO 2 NPs were well coated by a porous carbon shell.…”

Section: Introductionmentioning

confidence: 99%

MOF-derived porous carbon nanofibers wrapping Sn nanoparticles as flexible anodes for lithium/sodium ion batteries

et al. 2021

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Facile synthesis of flexible electrodes with high reversible capacity plays a key role in meeting the ever-increasing demand for flexible batteries. Herein, we incorporated Sn-based metal-organic framework (Sn-MOF) templates into crosslinked one-dimensional carbon nanofibers (CNFs) using an electrospinning strategy and obtained a hierarchical porous film (Sn@C@CNF) after a carbothermal reduction reaction. Merits of this modification strategy and its mechanism in improving the electrochemical performance of Sn nanoparticles (NPs) were revealed. Electrospun CNFs substrate ensured a highly conductive skeleton and excellent mechanical toughness, making Sn@C@CNF a self-supported binder-free electrode. Serving as a self-sacrificing template, Sn-MOF provided Sn NPs and derived into porous structures on CNFs after pyrolysis. The hierarchical porous structure of the carbon substrate was beneficial to enhancing the Li+/Na+ storage of the active materials, and the carbon wrappings derived from polyacrylonitrile (PAN) nanofibers and the MOF skeleton could jointly accommodate the violent volume variation during cycling, enabling Sn@C@CNF to have excellent cycle stability. The Sn@C@CNF anode exhibited a stable discharge specific capacity of 610.8 mAh g−1 under 200 mA g−1 for 180 cycles in lithium ion batteries (LIBs) and 360.5 mAh g−1 under 100 mA g−1 after 100 cycles in sodium ion batteries (SIBs). As a flexible electrode, Sn@C@CNF demonstrated a stable electromechanical response to repeated ‘bending-releasing’ cycles and excellent electrochemical performance when assembled in a soft-pack half-LIB. This strategy provided promising candidates of active materials and fabrication methods for advanced flexible batteries.

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“…The vibration frequencies of 1065 cm −1 and 1161 cm −1 were associated with the symmetrical bending vibration of hydrogen bonds (OH…OH, CN…HO, etc.). These peaks for all groups are much shifted in the (NM NPs-PAN) NFs than the reported peaks for PAN at 1988, 2242, and 1668 cm −1 [16,17].…”

Section: Ft-ir Studiesmentioning

confidence: 54%

In-Situ Preparation of Three Types of Noble Metal Nanoparticles-Polyacrylonitrile Nanofibers (NM NPs-PAN NFs, M = Pt, Au, and Ag) Using Electrospinning Technique Assisted with Ultrasound Irradiation

Kara

Tadjaordi

2019

The 23rd International Electronic Conference on Synthetic Organic Chemistry

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In recent years, the many alluring methods to prepare inorganic-organic hybrid nanomaterials have garnered great interest. The in-situ growth phenomenon is the most straightforward way to form these compounds with multiply dimensions. Here in, we demonstrate the in-situ synthesis of noble metal nanoparticles-polyacrylonitrile nanofibers (M NPs-PAN NFs) using an electrospinning route. Synthesis includes two main paths in the presence of dimethyl formamide (DMF). In the first path, the M NPs were prepared from the precursor solution using an in-situ reduction route in the presence of ultrasound irradiation and DMF (as a solvent and weak reducing agent) at 60 °C for nine min. The mechanism of our second path exhibited that the polymer matrix solution (PAN/DMF) acts as an appropriate host solution for the MNPs, due to possessing a high contents of effectiveness groups. These groups not only anchor NM NPs tightly in PAN fibers via dipole-induced dipole interactions but also they stabilize metal nanoparticles by good bonding interaction with their surface atoms. After preparing all nanofibers, TEM images revealed that both M NPs and their related nanofibers have a particular and unique shape without agglomerated particles with different sizes. Field emission scanning electron microscopy (FESEM), x-ray diffraction (XRD), energy-dispersive x-ray spectroscopy (EDS), and Fourier-transform infrared (FT-IR) were also applied to verify the formation of all samples. In this report, we tried to present a preparative synthesis strategy to the preparation of nanofibers.

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Study of carbonization behavior of polyacrylonitrile/tin salt as anode material for lithium‐ion batteries

Cited by 12 publications

References 46 publications

Processing Iron Oxide Nanoparticle-Loaded Composite Carbon Fiber and the Photosensitivity Characterization

Processing Iron Oxide Nanoparticle-Loaded Composite Carbon Fiber and the Photosensitivity Characterization

MOF-derived porous carbon nanofibers wrapping Sn nanoparticles as flexible anodes for lithium/sodium ion batteries

In-Situ Preparation of Three Types of Noble Metal Nanoparticles-Polyacrylonitrile Nanofibers (NM NPs-PAN NFs, M = Pt, Au, and Ag) Using Electrospinning Technique Assisted with Ultrasound Irradiation

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