Oxidative Template for Conducting Polymer Nanoclips

Liu, Zhen; Zhang, Xinyu; Poyraz, Selçuk; Surwade, Sumedh P.; Manohar, Sanjeev K.

doi:10.1021/ja105966c

Cited by 134 publications

(91 citation statements)

References 20 publications

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“…[27] Among CPs, PPy has been one of the most extensively studied members due to its many advantages such as its simple and straightforward preparation at ambient conditions, low cost and high polymerisation yield, unique electrochemical properties, relatively high conductivity, and long-term thermal and environmental stability with good processability. [28,29] Thus, throughout the last decade, various nanostructured PPy morphologies from zero dimensional (0D) nanogranules to threedimensional (3D) sea urchin-like nanospheres have been copiously synthesised [8,26,[30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

Poyraz

2018

GJPAAS

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Hollow carbon nanospheres (HCNSs), with either carbon nanotube (CNT) or metal oxide nanowire (MONW) decoration on their surface, were synthesised as building materials with a great potential for the next generation advanced applications. A well-established, polymeric latex NS synthesis method and a simply modified version of a microwave (MW) energy-based carbonisation approach, i.e. Poptube, were systematically combined to obtain these HCNSs. Through this simple, facile, affordable and easily scalable 'combined synthesis method', it was managed to successfully produce HCNSs with an unique

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Section: Introductionmentioning

confidence: 99%

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

Poyraz

2018

GJPAAS

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“…[34,39] The PAni nanofibers used in this study show porous surface with a caterpillar-like feature that may facilitate the access of the electrolyte to the electrodes (Figure 2b). [35,40] The PAni nanofibers have an average diameter of about 150 nm. The freshly prepared PAni suspension was stable (inset picture in Figure 2b).…”

Section: Resultsmentioning

confidence: 99%

Graphene based integrated tandem supercapacitors fabricated directly on separators

2015

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. This study show great promises for the future development of integrated energy storage devices.2

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“…Under an oxidizing potential, the free electron pair of nitrogen attacks an adjacent carbon atom, leading to the peroxy group (7 and 10). The unfavorable molecule (11) can further react with hydroxyl radical anion generated in the reaction mixture through the electrochemically driven homolytic cleavage and create structure (12). The latest may react with hydrogen peroxide (by-product of 2-electron ORR process [29][30][31]) and form N-oxide (13)(14)(15)(16).…”

Section: Electrochemical Stabilitymentioning

confidence: 99%

“…One of the most promising is to adapt nitrogen-rich carbon precursors, e.g. organic compounds [11], such as polypyrrole (PPy) [12], polyaniline (PANI) [2] and polyacrylonitrile [13]. In summary, this method provides a high surface area product with homogenous morphology due to low conversion (polymer-to-carbon) temperature, allowing to control better the final properties, such as the surface concentration of nitrogen, and the way it is incorporated in the carbon structure (e.g., as pyrrolic, graphitic, pyridinic or quaternary N-C states) [14].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical stability of the polymer-derived nitrogen-doped carbon: an elusive goal?

Cong

Radtke

Stumpf

et al. 2015

Mater Renew Sustain Energy

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Nitrogen-doped carbon is a promising metalfree catalyst for oxygen reduction reaction in fuel cells and metal-air batteries. However, its practical application necessitates a significant cost reduction, which can be achieved in part by using new synthetic methods and improvement of catalytic activity by increasing the density of redox active centers. This can be modulated by using polymer as the carbon and nitrogen sources. Although, superior catalytic activity of such N-doped C has been investigated in details, the electrochemical long-term stability of polymer-derived doped-carbon is still unclear. Herein, in this study we generated N-doped carbon from the most recommended polymer that is comparable to the state-of-the-art materials with porosity as high as 2,086 m 2 g -1 and a nitrogen doping level of 3-4 at.%, of which 56 % is pyrrolic N, 36.1 % pyridinic and *8 % graphitic. The electrochemical characterization shows that N-doped carbon is catalytic toward oxygen reduction in an alkaline electrolyte via a favorable four-electron process, however, not stable under long-term potential scanning. The irreversible electrochemical oxidation of this material is associated with the presence of a significant content or pyrrolic and pyridinic N close to the edge of the carbon network originating from the polypyrrole precursor. These structures are less stable under operating electrochemical potential. The role of polypyrrole as the precursor of N-doped carbons has to be carefully revised since it supplies sufficient number of catalytic sites, but also generates unstable functionalities on the carbon surface.

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Oxidative Template for Conducting Polymer Nanoclips

Cited by 134 publications

References 20 publications

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

Graphene based integrated tandem supercapacitors fabricated directly on separators

Electrochemical stability of the polymer-derived nitrogen-doped carbon: an elusive goal?

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