Polymer/block copolymer blending system as the compatible precursor system for fabrication of mesoporous carbon nanofibers for supercapacitors

Dong, Wenju; Wang, Zhen; Zhang, Qin; Ravi, M.; Yu, Meimei; Tan, Yongtao; Liu, Ying; Kong, Ling‐Bin; Kang, Long; Ran, Fen

doi:10.1016/j.jpowsour.2019.02.070

Cited by 41 publications

(12 citation statements)

References 52 publications

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“…Electrochemical properties of CNFs have been typically improved by adding pore-generating materials to precursor polymers such as PAN. Recently, poly(acrylic acid) (PAA), poly(ethylene glycol) (PEG), and poly(methyl methacrylate) (PMMA) have been utilized as porogens to produce porous CNFs, and energy storage performances were successfully improved compared to CNFs derived from PAN only [ 31 , 32 , 33 ]. Porous CNF electrodes derived from a single precursor such as 6FDA-durene were also reported [ 17 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

Preparation and Electrochemical Properties of Porous Carbon Nanofiber Electrodes Derived from New Precursor Polymer: 6FDA-TFMB

Jeon

Lee

et al. 2020

Polymers

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Porous carbon nanofibers (CNFs) with high energy storage performance were fabricated with a single precursor polymer, 6FDA-TFMB, without the use of any pore-generating materials. 6FDA-TFMB was synthesized, electrospun, and thermally treated to produce binder-free CNF electrodes for electrochemical double-layer capacitors (EDLCs). Highly porous CNFs with a surface area of 2213 m2 g−1 were prepared by steam-activation. CNFs derived from 6FDA-TFMB showed rectangular cyclic voltammograms with a specific capacitance of 292.3 F g−1 at 10 mV s−1. It was also seen that CNFs exhibit a maximum energy density of 13.1 Wh kg−1 at 0.5 A g−1 and power density of 1.7 kW kg−1 at 5 A g−1, which is significantly higher than those from the common precursor polymer, polyacrylonitrile (PAN).

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Section: Resultsmentioning

confidence: 99%

Preparation and Electrochemical Properties of Porous Carbon Nanofiber Electrodes Derived from New Precursor Polymer: 6FDA-TFMB

Jeon

Lee

et al. 2020

Polymers

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“…It is worth noting that 3D porous carbon derived block copolymer has a feature of mesoscale structure controlled by the block copolymer molecular weight, solvents used in solvent annealing, and pyrolysis temperature. [ 115,116 ] Such mesoscale pores are beneficial to construct hierarchical and continuous networks, providing a pathway for the ions to access the internal micropores.…”

Section: Charge/ion Transport Understanding For 3d Carbon‐based Electmentioning

confidence: 99%

Design Strategies of 3D Carbon‐Based Electrodes for Charge/Ion Transport in Lithium Ion Battery and Sodium Ion Battery

Zhang

Ran

2021

Adv Funct Materials

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119

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Advanced 3D carbon‐based electrodes have the potential to significantly enhance the energy‐power density of lithium ion batteries and sodium ion batteries, due to their continuous conductive networks, proper porosity distribution, and integrated stable structure. However, it still remains a fundamental scientific challenge to accurately understand the charge/ion transport in 3D carbon‐based electrodes. In this review, the operating mechanism of charge/ion transport in 3D carbon‐based electrodes are comprehended by introducing a useful architectural analogy to provide a physical insight. In order to better understand the relationship between 3D carbon‐based electrode structure and electrode process characteristics, the main design strategies of 3D carbonbased electrodes according to the specific characteristic of pore tortuosity is proposed. Through analysis of 3D carbon electrode architectural models, several key scientific issues and related characterization technologies that are beneficial to improving the charge/ion transport efficiency are also raised. The kinetics difference of ionic transport between Li+ and Na+ ions is also taken into account. Furthermore, the critical parameters of porous structure including porosity and tortuosity to investigate the parameter‐structure‐performance relationships of 3D carbon‐based architecture electrodes are highlighted, which in turn would guide more rational battery design in tradeoff between the high capacity and fast transport.

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“…One of the major and continued recent trend is the synthesis of high surface area CNFs. This is achieved by two ways: One is by addition of variety of thermally unstable materials such as simple organic compounds or polymers can be added in the precursor solution, which during the carbonization step get removed/degraded to generate the porosity on the fibers obtained . The choice of the thermally unstable compounds can be made in smart way to tune the porosity and pore size on the final fibers.…”

Section: Trends In Synthesis Of Pan‐based Electrospun Cnfsmentioning

confidence: 99%

Brief overview of electrospun polyacrylonitrile carbon nanofibers: Preparation process with applications and recent trends

Jadhav

Dhavale

Patil

et al. 2019

Mat Design & Process Comms

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The carbon fibers (CFs) are carbonaceous materials in fibrous shape with high stiffness, high tensile strength, light weight, high chemical resistance, high‐temperature tolerance, and low thermal expansion. The CFs with diameters in the nanometer range are called as carbon nanofibers (CNFs), and they have shown applications in energy conversion and storage devices like supercapacitors, lithium‐ion batteries and solar cell, catalysis, sensors, and water purification and also in biomedical fields. In this brief note, the information about types of precursors used and the steps involved in the preparation of CNFs by electrospinning method are explained. The importance of polyacrlonitrile (PAN)‐based CNFs is highlighted, and the main applications of CNFs with continued and new important trends related to the synthesis and applications of CNFs are briefly explained by referring to very recent literature.

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Polymer/block copolymer blending system as the compatible precursor system for fabrication of mesoporous carbon nanofibers for supercapacitors

Cited by 41 publications

References 52 publications

Preparation and Electrochemical Properties of Porous Carbon Nanofiber Electrodes Derived from New Precursor Polymer: 6FDA-TFMB

Preparation and Electrochemical Properties of Porous Carbon Nanofiber Electrodes Derived from New Precursor Polymer: 6FDA-TFMB

Design Strategies of 3D Carbon‐Based Electrodes for Charge/Ion Transport in Lithium Ion Battery and Sodium Ion Battery

Brief overview of electrospun polyacrylonitrile carbon nanofibers: Preparation process with applications and recent trends

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