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Title: Chemical synthesis and enhanced electrical properties of bulk poly(3,4-ethylenedioxythiophene)/reduced graphene oxide nanocomposites

Authors:
; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1414592
Grant/Contract Number:
PI0000012
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Synthetic Metals
Additional Journal Information:
Journal Volume: 229; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-12-21 20:32:05; Journal ID: ISSN 0379-6779
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

Chen, Liangjun, Liu, Wei, Su, Xianli, Xiao, Shengqiang, Xie, Hongyao, Uher, Ctirad, and Tang, Xinfeng. Chemical synthesis and enhanced electrical properties of bulk poly(3,4-ethylenedioxythiophene)/reduced graphene oxide nanocomposites. Netherlands: N. p., 2017. Web. doi:10.1016/j.synthmet.2017.05.010.
Chen, Liangjun, Liu, Wei, Su, Xianli, Xiao, Shengqiang, Xie, Hongyao, Uher, Ctirad, & Tang, Xinfeng. Chemical synthesis and enhanced electrical properties of bulk poly(3,4-ethylenedioxythiophene)/reduced graphene oxide nanocomposites. Netherlands. doi:10.1016/j.synthmet.2017.05.010.
Chen, Liangjun, Liu, Wei, Su, Xianli, Xiao, Shengqiang, Xie, Hongyao, Uher, Ctirad, and Tang, Xinfeng. Sat . "Chemical synthesis and enhanced electrical properties of bulk poly(3,4-ethylenedioxythiophene)/reduced graphene oxide nanocomposites". Netherlands. doi:10.1016/j.synthmet.2017.05.010.
@article{osti_1414592,
title = {Chemical synthesis and enhanced electrical properties of bulk poly(3,4-ethylenedioxythiophene)/reduced graphene oxide nanocomposites},
author = {Chen, Liangjun and Liu, Wei and Su, Xianli and Xiao, Shengqiang and Xie, Hongyao and Uher, Ctirad and Tang, Xinfeng},
abstractNote = {},
doi = {10.1016/j.synthmet.2017.05.010},
journal = {Synthetic Metals},
number = C,
volume = 229,
place = {Netherlands},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.synthmet.2017.05.010

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

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  • Fe{sub 2.25}W{sub 0.75}O{sub 4}/reduced graphene oxide (RGO) composites were prepared for application of novel bifunctional photocatalyst via simple one-pot hydrothermal method, employing graphene oxide (GO), Na{sub 2}WO{sub 4}, FeSO{sub 4} and sodium dodecyl benzene sulfonate (SDBS) as the precursors. Transmission electron microscope (TEM) results indicate that the well-dispersed Fe{sub 2.25}W{sub 0.75}O{sub 4} nanoparticles were deposited on the surface of RGO sheets homogeneously. Magnetic characterization reveals that Fe{sub 2.25}W{sub 0.75}O{sub 4} and Fe{sub 2.25}W{sub 0.75}O{sub 4}/RGO show ferromagnetic behaviors. So this novel bifunctional photocatalyst could achieve magnetic separation and collection with the aid of external magnet. The composites exhibit enhanced photocatalyticmore » performance on degradation of methyl orange (MO) compared with pure Fe{sub 2.25}W{sub 0.75}O{sub 4} under low-power ultraviolet light irradiation due to the introduction of RGO. Moreover, this hybrid catalyst possesses long-term excellent photocatalytic performance due to its good thermal stability. This bifunctional photocatalyst, which combines magnetic property and excellent photocatalytic activity, would be a perfect candidate in applications of catalytic elimination of environmental pollutants and other areas. - Graphical abstract: Magnetically recyclable Fe{sub 2.25}W{sub 0.75}O{sub 4}/reduced graphene oxide nanocomposites with enhanced photocatalytic property Display Omitted - Highlights: ●Fe{sub 2.25}W{sub 0.75}O{sub 4} growth, deposition and GO reduction occurred simultaneously. ●Composite possessed ferromagnetic and enhanced photocatalytic properties. ●Composite is utilized as a magnetically separable and high-efficient photocatalyst. ●Photocatalyst showed good photocatalytic and thermal stability during cyclic use.« less
  • In organic electronic devices, indium tin oxide (ITO) and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) are the most common transparent electrode and anodic buffer layer materials, respectively. A widespread concern is that PEDOT:PSS is acidic and etches ITO. We show that this issue is not serious: only a few nanometers of ITO are etched in typical device processing conditions and storage thereafter; conductivity losses are affordable; and optical transmission gains further offset these losses. Organic photovoltaic (OPV) devices fabricated on old ITO (with PEDOT:PSS history) were similar or higher in efficiency than devices on fresh ITO. Poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]] (PTB7) devices on old ITO showed efficienciesmore » up to 9.24% compared to 8.72% efficient devices on fresh ITO. This reusability of ITO can be impactful for economics of organic electronics because ITO accounts for almost 90% of energy embedded in devices, such as OPVs.« less
  • We report the synthesis of composite RuO 2/poly(3,4-ethylenedioxythiophene) (PEDOT) nanotubes with high specific capacitance and fast charging/discharging capability as well as their potential application as electrode materials for a high-energy and high-power supercapacitor. RuO 2/PEDOT nanotubes were synthesized in a porous alumina membrane by a step-wise electrochemical deposition method, and their structures were characterized using electron microscopy. Cyclic voltammetry was used to qualitatively characterize the capacitive properties of the composite RuO 2/PEDOT nanotubes. Their specific capacitance, energy density and power density were evaluated by galvanostatic charge/discharge cycles at various current densities. The pseudocapacitance behavior of these composite nanotubes originates frommore » ion diffusion during the simultaneous and parallel redox processes of RuO 2 and PEDOT. We show that the energy density (specific capacitance) of PEDOT nanotubes can be remarkably enhanced by electrodepositing RuO 2 into their porous walls and onto their rough internal surfaces. The flexible PEDOT prevents the RuO 2 from breaking and detaching from the current collector while the rigid RuO 2 keeps the PEDOT nanotubes from collapsing and aggregating. The composite RuO 2/PEDOT nanotube can reach a high power density of 20 kW kg -1 while maintaining 80% energy density (28 Wh kg -1) of its maximum value. This high power capability is attributed to the fast charge/discharge of nanotubular structures: hollow nanotubes allow counter-ions to readily penetrate into the composite material and access their internal surfaces, while a thin wall provides a short diffusion distance to facilitate ion transport. The high energy density originates from the RuO 2, which can store high electrical/electrochemical energy intrinsically. The high specific capacitance (1217 Fg -1) which is contributed by the RuO 2 in the composite RuO 2/PEDOT nanotube is realized because of the high specific surface area of the nanotubular structures. Such PEDOT/RuO 2 composite nanotube materials are an ideal candidate for the development of high-energy and high-power supercapacitors.« less
  • Organosulfur Compounds (OSCs) represent an attractive alternative as organic cathode materials for electrochemical energy storage (EES) applications. They intrinsically have high gravimetric capacity (although low volumetric) and are typically inexpensive, since they are composed of abundant elements (i.e. C, N, O, and S). However, OSCs, specifically thiolate-containing OSCs generally suffer from slow charge transfer kinetics. To mitigate the charge transfer limitations, conducting polymers (CPs) such as poly-3,4-ethylenedioxythiophene (PEDOT) have been employed as electrocatalysts. In this manuscript, we have covalently modified a PEDOT film with an OSC (i.e. 2,5-dimercapto-1,3,4-thiadiazole di-lithium salt (Li2DMcT)). We have developed a synthetic strategy that employs, formore » the first time, a post-polymerization modification reaction as a tractable and viable technique to modify organic materials for EES electrodes. Electrochemical characterization, via cyclic voltammetry showed the expected pseudocapacitive response of PEDOT with the superimposed faradaic processes of the covalently bound DMcT. Moreover, spectroscopic characterization using Raman spectroscopy provided mechanistic insights into the electrochemical reactions. Furthermore, we electropolymerized films onto coin-cell electrodes and tested them in half-cell configurations and found that the capacity retention of the films was significantly enhanced, when compared with the PEDOT/DMcT composites (mixed but not covalently bound).« less