Fabrication and study of supercapacitor electrodes based on oxygen plasma functionalized carbon nanotube fibers

Adusei, Paa Kwasi; Gbordzoe, Seyram; Kanakaraj, Sathya Narayan; Hsieh, Yu-Yun; Alvarez, Noe T.; Fang, Yanbo; Johnson, Kenneth I.; McConnell, Colin; Shanov, Vesselin

doi:10.1016/j.jechem.2019.03.005

Cited by 103 publications

(49 citation statements)

References 72 publications

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“…Multifunctional CNT hybrid material possesses enhanced properties relative to pristine CNT material, and may outperform traditional material in the intended application. Pristine CNT can be doped with metals [ 41 ], polymers, ceramics, and various chemicals [ 38 , 42 ] to meet various application needs. As there is an increasing trend in making CNT hybrid materials, characterization of the material becomes an important factor.…”

Section: Characterization Of Cnt Materialsmentioning

confidence: 99%

Carbon Nanotube Sheet-Synthesis and Applications

Chitranshi

Pujari

et al. 2020

Nanomaterials

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Decades of extensive research have matured the development of carbon nanotubes (CNTs). Still, the properties of macroscale assemblages, such as sheets of carbon nanotubes, are not good enough to satisfy many applications. This paper gives an overview of different approaches to synthesize CNTs and then focuses on the floating catalyst method to form CNT sheets. A method is also described in this paper to modify the properties of macroscale carbon nanotube sheets produced by the floating catalyst method. The CNT sheet is modified to form a carbon nanotube hybrid (CNTH) sheet by incorporating metal, ceramic, or other types of nanoparticles into the high-temperature synthesis process to improve and customize the properties of the traditional nanotube sheet. This paper also discusses manufacturing obstacles and the possible commercial applications of the CNT sheet and CNTH sheet. Manufacturing problems include the difficulty of injecting dry nanoparticles uniformly, increasing the output of the process to reduce cost, and safely handling the hydrogen gas generated in the process. Applications for CNT sheet include air and water filtering, energy storage applications, and compositing CNTH sheets to produce apparel with anti-microbial properties to protect the population from infectious diseases. The paper also provides an outlook towards large scale commercialization of CNT material.

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Section: Characterization Of Cnt Materialsmentioning

confidence: 99%

Carbon Nanotube Sheet-Synthesis and Applications

Chitranshi

Pujari

et al. 2020

Nanomaterials

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“…To date, a large variety of materials on the basis carbon nanotubes (CNT) has been obtained, among them ordered layers [1], nanocarbon fibers [2,3], bucky paper [4,5], modified electrodes [6][7][8][9], gas or cation absorbers [10,11] and some others [12]. Pristine carbon materials can be modified by various ways, e.g., through heteroatom doping [13], covalent attachment of different atoms [14][15][16], functional groups [17][18][19][20] or molecules [21,22] as well as by non-covalent adsorption of various polyaromatic molecules [23][24][25][26], nanoparticles [4,27] or polymers [28]. One of the practical aspects of such hybrid materials is their use as the active layers of chemiresistive gas sensors.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Nanomaterial Based on Single Walled Carbon Nanotubes Cross-Linked via Axially Substituted Silicon (IV) Phthalocyanine for Chemiresistive Sensors

et al. 2020

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In this work, the novel hybrid nanomaterial SWCNT/SiPc made of single walled carbon nanotubes (SWCNT) cross-linked via axially substituted silicon (IV) phthalocyanine (SiPc) was studied as the active layer of chemiresistive layers for the detection of ammonia and hydrogen. SWCNT/SiPc is the first example of a carbon-based nanomaterial in which an axially substituted phthalocyanine derivative is used as a linker. The prepared hybrid material was characterized by spectroscopic methods, thermogravimetry, scanning and transmission electron microscopies. The layers of the prepared hybrid were tested as sensors toward ammonia and hydrogen by a chemiresistive method at different temperatures and relative humidity as well as in the presence of interfering gases like carbon dioxide, hydrogen sulfide and volatile organic vapors. The hybrid layers exhibited the completely reversible sensor response to both gases at room temperature; the recovery time was 100–200 s for NH3 and 50–120 s in the case of H2 depending on the gas concentrations. At the relative humidity (RH) of 20%, the sensor response was almost the same as that measured at RH 5%, whereas the further increase of RH led to its 2–3 fold decrease. It was demonstrated that the SWCNT/SiPc layers can be successfully used for the detection of both NH3 and H2 in the presence of CO2. On the contrary, H2S was found to be an interfering gas for the NH3 detection.

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“…In general, the gas-phase non-equilibrium plasma technology includes dielectric barrier discharge (DBD), corona discharges, microwave (MW) discharge and gliding arc discharge (GAD). This promising technology has advantages of high energy density, mild reaction conditions, small-scale equipment, as well as the rapid response time, and has already been applied in many fields like material fabrication and surface treatment, [7][8][9] the decomposition of volatile organic compounds (VOCs), [10,11] direct conversion of simple hydrocarbons to high-value chemicals [12,13] as well as hydrocarbon fuel reforming. [14,15] It is also reported that the assistance of plasma can improve the performance of catalysts.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production via Partial Oxidation Reforming of Methane with Gliding Arc Discharge Plasma

Wang

Liu

et al. 2020

ChemistrySelect

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Hydrogen production from partial oxidation reforming of methane in a gliding arc discharge (GAD) reactor is investigated. The effects of input power, the oxygen-carbon molar ratio (O/C), and residence time are studied, respectively. Products such as H 2 , CO, CO 2 , and C 2-C 4 hydrocarbons can be detected in the outlet gas. The experimental result shows that the input power of 36.4 W, the relitively low O/C of 0.705 and the 13.8 s residence time in this system will bring the highest H 2 energy yield. Compared to the decomposition of methane, partial oxidation of methane with air can maintain a stable discharge state and no carbon deposition on electrodes is observed during the reaction process. Optical emission spectroscopy (OES) is also employed to characterize this methane-air plasma. Based on the results of the experiment and OES, a possible mechanism of methane partial oxidation process was proposed, which points out that collisions of high-energy electrons and excited N 2 species (mainly N 2 (A)) with other species (such as O 2 , CH 4) in the plasma region are two main ways for the activation of this reforming system. Hydrogen is generated principally through the H-abstraction reaction and the H-coupling reaction.

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Fabrication and study of supercapacitor electrodes based on oxygen plasma functionalized carbon nanotube fibers

Cited by 103 publications

References 72 publications

Carbon Nanotube Sheet-Synthesis and Applications

Carbon Nanotube Sheet-Synthesis and Applications

A Hybrid Nanomaterial Based on Single Walled Carbon Nanotubes Cross-Linked via Axially Substituted Silicon (IV) Phthalocyanine for Chemiresistive Sensors

Hydrogen Production via Partial Oxidation Reforming of Methane with Gliding Arc Discharge Plasma

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