Electrical conductivity of ion-doped graphite/polyethersulphone composites

Jin, Jie; Leesirisan, Siriwan; Song, Mo

doi:10.1016/j.compscitech.2010.05.017

Cited by 23 publications

(12 citation statements)

References 36 publications

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“…The dominant sensing mechanism for this range can be explained by proton (H + ) hopping, hydronium (H 3 O + ) diffusion, and the Grotthuss mechanism . These three kinds of mechanisms show lower charge transfer than ionic conduction does, because they are performed through discontinuous charge transfer and are affected by the density of proton hopping sites , as shown in Fig. a.…”

Section: Resultsmentioning

confidence: 99%

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High performance and moisture stable humidity sensors based on polyvinylidene fluoride nanofibers by improving electric conductivity

Choi

Lee

Kim

2018

Polymer Engineering & Sci

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Polyvinylidene fluoride (PVDF)‐based nanofiber was successfully produced for a high performance and stable humidity sensor via a solution‐blowing spinning method. The performances of the manufactured sensors, including the impedance change with relative humidity (RH), moisture stability, and response and recovery times, were investigated. To improve charge carrier transfer, which is the main mechanism of humidity sensing, especially under low RH conditions, lithium chloride was used and displayed the best linearity in the impedance change with RH. Fast response and recovery times of 1.7 and 16.1 s were, respectively, achieved with zinc oxide nanoparticles. Furthermore, the sensors showed excellent moisture stability, owing to the hydrophobicity of PVDF, and this was demonstrated via repeatability testing and scanning electron microscopy. The humidity sensing mechanism was discussed using complex impedance spectra. POLYM. ENG. SCI., 59:304–310, 2019. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

“…By adding LiCl, it is expected that the number of charge hopping sites will increase because of Li + ions, as shown in Fig. b . Moreover, Li + ions are also expected to be transported as the charge carrier , leading to a decrease in the electric resistance.…”

Section: Resultsmentioning

confidence: 99%

High performance and moisture stable humidity sensors based on polyvinylidene fluoride nanofibers by improving electric conductivity

Choi

Lee

Kim

2018

Polymer Engineering & Sci

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“…By rapid thermal treatment, OG can expand several hundreds times the volume of its original and get expanded graphite (EG). As to the conductive filler, EG has been widely used [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Characterization of a microwave absorbent prepared by coprecipitation reaction of iron oxide on the surface of graphite nanosheet

Yang

Wang

2012

Materials Science and Engineering: B

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“… Comparison model with experimental data related to others' composites: (a) P/G,5 (b) P/EG,56 and (c) P/CF 14. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]…”

Section: Introduction Of the Functionmentioning

confidence: 99%

A new equation for predicting electrical conductivity of carbon‐filled polymer composites used for bipolar plates of fuel cells

Taherian

Hadianfard

Golikand

2012

J of Applied Polymer Sci

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In this article, a statistical-thermodynamic formula based on a new approach has been developed to predict electrical conductivity of carbon-filled composites used for bipolar plate of proton exchange membrane fuel cell. In this model, based on percolation threshold phenomenon, it is assumed that the relationship between electrical conductivity of composite and filler volume fraction follows a sigmoidal equation. Afterwards, the four effective factors on composite conductivity including filler electrical conductivity, filler aspect ratio, wettability, as well as interface contact resistance are replaced upon constant parameters of sigmoidal function. In order to test the model, some single-filler composites have been manufactured by using the phenolic resin as binder and graphite (G), expanded graphite (EG), and carbon fiber (CF) as fillers. The fitting quality is measured by R-square, adjusted R-square, SSE, and RMSE parameters. The results showed that there is a noteworthy agreement between the model and the experimental data. Compared to the other models, this model can be used for more types of fillers.

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Electrical conductivity of ion-doped graphite/polyethersulphone composites

Cited by 23 publications

References 36 publications

High performance and moisture stable humidity sensors based on polyvinylidene fluoride nanofibers by improving electric conductivity

High performance and moisture stable humidity sensors based on polyvinylidene fluoride nanofibers by improving electric conductivity

Characterization of a microwave absorbent prepared by coprecipitation reaction of iron oxide on the surface of graphite nanosheet

A new equation for predicting electrical conductivity of carbon‐filled polymer composites used for bipolar plates of fuel cells

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