A review of heat treatment on polyacrylonitrile fiber

Rahaman, Muhammad Syukri Abd; Ismail, Ahmad Fauzi; Mustafa, Azeman

doi:10.1016/j.polymdegradstab.2007.03.023

Cited by 1,261 publications

(930 citation statements)

References 80 publications

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“…The decrease of nitrogen content in PAN-based fibers during the high temperature is ascribed to the aromatization of PAN. The C=N bonding will be broken with the increase of temperature, releasing heteroatoms (N) [43,44]. The SSA of NCNF-1000 is 893 m 2 g −1 .…”

Section: Resultsmentioning

confidence: 99%

A lightweight carbon nanofiber-based 3D structured matrix with high nitrogen-doping level for lithium metal anodes

Zhang

Deng

et al. 2018

Sci. China Mater.

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Lithium metal is considered to be the most promising anode material for the next-generation rechargeable batteries. However, the uniform and dendrite-free deposition of Li metal anode is hard to achieve, hindering its practical applications. Herein, a lightweight, free-standing and nitrogen-doped carbon nanofiber-based 3D structured conductive matrix (NCNF), which is characterized by a robust and interconnected 3D network with high doping level of 9.5 at%, is prepared by electrospinning as the current collector for Li metal anode. Uniform Li nucleation with reduced polarization and dendrite-free Li deposition are achieved because the NCNF with high nitrogen-doping level and high conductivity provide abundant and homogenous metallic Li nucleation and deposition sites. Excellent cycling stability with high coulombic efficiency are realized. The Li plated NCNF was paired with LiFePO 4 to assemble the full battery, also showing high cyclic stability.

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Section: Resultsmentioning

confidence: 99%

A lightweight carbon nanofiber-based 3D structured matrix with high nitrogen-doping level for lithium metal anodes

Zhang

Deng

et al. 2018

Sci. China Mater.

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“…It must be pointed out that, the thermal treatment of the PAN fibres has been extensively studied due to the final mechanical features of the obtained CF are hardly dependent of the conditions in which it is realized. Therefore, and taking into account that it is not the main goal of this work and the existence of a wide literature about it (Fitzer et al 1986, Rahaman et al 2007, Yusofa et al 2012), a strict analysis of the results presented in Figures 1 and 2 will not be realized. In summary, PANOX fibres carbonization produces an important loss of mass, higher than 50 % (Figure 1), which takes place mainly through the volatile release, above all as oxygen-containing compounds (CO, CO2, H2O) and nitrogen-containing compounds (NH3, HCN, CH3CN) (Figure 2), which leads to a carbon enrichment of the final CF.…”

Section: Carbonization Of Panox Fibresmentioning

confidence: 99%

“…This behaviour is owed to the existence of restrictions, which hinder the N2 diffusion in the microporosity bulk (Fitzer et al 1986, Rahaman et al 2007). This behaviour has been observed in other PCF and for carbonized (Cazorla-Amorós et al 1996, Rahaman et al 2007Rhyu et al 1990). The total and narrow microporosity volumes ACF evolution, (VN2) and (VCO2) respectively, are in agreement to N2 isotherm discussion above commented.…”

Section: Acf Pan Porous Texture Characterizationmentioning

confidence: 99%

Unusual pre-oxidized polyacrylonitrile fibres behaviour against their activation with CO2: carbonization effect

2016

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Abstract.The CF-PAN activation process with CO2 has been analysed. Activation of CF-PAN with CO2 leads to unusual results both, activation percentage evolution over the time and generated porosity development. In the explanation has been highlighted the role of the carbonization step in the CF-PAN activation process. The analysed results point to the fact that part of the released nitrogen-containing compounds during PANOX fibres carbonization are deposited on the CF surface, which affects to carbonized PAN fibres, decreasing actives sites, or acting as inhibitors of the gasification reaction.* Corresponding

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“…There have been a lot of methods reported for deposition-based graphene synthesis, primarily because of its practicality and ease of scalability [47,[105][106][107][108][109][110]. Chemical Vapor Deposition (CVD) techniques lead to thin graphene films ( 75 cm) [25].…”

Section: Depositionmentioning

confidence: 99%

Graphene synthesis: a Review

Shams

Zhang

Zhu

2015

Materials Science-Poland

135

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Graphene has achieved a great amount of popularity and interest from the science world because of its extraordinary physical, mechanical and thermal properties. Graphene is an allotrope of carbon, having one-atom-thick planar sheets of sp 2 bonded carbon atoms densely packed in a honeycomb crystal lattice. Many methods to synthesize graphene have been developed over a short period and we believe it is necessary to create a list of the most notable approaches. This article focuses on the methods to synthesize graphene in an attempt to summarize and document advancements in the synthesis of graphene research and future prospects.

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A review of heat treatment on polyacrylonitrile fiber

Cited by 1,261 publications

References 80 publications

A lightweight carbon nanofiber-based 3D structured matrix with high nitrogen-doping level for lithium metal anodes

A lightweight carbon nanofiber-based 3D structured matrix with high nitrogen-doping level for lithium metal anodes

Unusual pre-oxidized polyacrylonitrile fibres behaviour against their activation with CO2: carbonization effect

Graphene synthesis: a Review

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