Effect of carbonization temperature on electrical resistivity and physical properties of wood and wood-based composites

Kwon, Jin Kyung; Park, Sang Bum; Ayrılmış, Nadir; Oh, Seung Won; Kim, Nam Hun

doi:10.1016/j.compositesb.2012.10.012

Cited by 42 publications

(23 citation statements)

References 14 publications

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“…The recorded bulk conductivity of HC is 75 000 S m −1 owing to its conductive nanographite domains, showing a conductivity as high as that of artificial graphite (≈10 5 S m −1 ) . This value is much higher than other wood‐derived hard carbons reported so far . On the other hand, the conductivity of A–HC with 10 wt% PTFE is 240 S m −1 despite the very low conductivity of PTFE (5.1 × 10 −17 S m −1 ) .…”

Section: Resultsmentioning

confidence: 65%

“…[35] The recorded bulk conductivity of HC is 75 000 S m −1 owing to its conductive nanographite domains, showing a conductivity as high as that of artificial graphite (≈10 5 S m −1 ). [37][38][39] On the other hand, the conductivity of A-HC with 10 wt% PTFE is 240 S m −1 despite the very low conductivity of PTFE (5.1 × 10 −17 S m −1 ). [37][38][39] On the other hand, the conductivity of A-HC with 10 wt% PTFE is 240 S m −1 despite the very low conductivity of PTFE (5.1 × 10 −17 S m −1 ).…”

Section: Structural and Electrochemical Characterization Of Hc And A-hcmentioning

confidence: 99%

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Quinone‐Based Redox Supercapacitor Using Highly Conductive Hard Carbon Derived from Oak Wood

Katsuyama

Nakayasu

Ōizumi

et al. 2019

Advanced Sustainable Systems

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In this study, the use of biorefined wood materials in the fabrication of organic redox supercapacitors is proposed. Oak‐derived hard carbon (HC) is revealed to have a nanographite domain structure, showing conductivity as high as that of artificial graphite. The CO2‐activated hard carbon (A–HC) has a conductivity one order higher than that of commercial activated carbon, with a surface area of 1126 m2 g−1. The energy densities of supercapacitors composed of a tetrachlorohydroquinone cathode and anthraquinone (AQ) or 1,5‐dichloroanthraquinone (DCAQ) anode are 19.0 and 13.8 Wh kg−1, respectively. The utilization rate of AQ with A–HC is 97.6% (250.9 mAh g−1), which is much higher than those in previous reports (≈80%). After 1000 cycles, 91.0% of the discharge capacity is retained when the DCAQ anode is used. Biorefined wood materials lead to a remarkable improvement in the operation of organic supercapacitors. This is intriguing, because the functional carbon material herein is easily prepared from a natural resource, wood, whereas numerous studies have prepared such materials from artificial chemical sources. Therefore, the use of oak‐derived HC enhances the usability of organic active materials for energy storage devices and potentially has a far‐reaching impact on the environment.

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Section: Resultsmentioning

confidence: 65%

Section: Structural and Electrochemical Characterization Of Hc And A-hcmentioning

confidence: 99%

Quinone‐Based Redox Supercapacitor Using Highly Conductive Hard Carbon Derived from Oak Wood

Katsuyama

Nakayasu

Ōizumi

et al. 2019

Advanced Sustainable Systems

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show abstract

“…The c-MDF showed approximately 1.8 times higher moisture buffering capacity than the MDF without carbonization treatment. Carbonized wood-based materials, including c-MDF, can be considered disordered carbon and can greatly affect moisture-absorbing capacity (Kwon et al 2013). In this study, loess-treated c-MDF showed a 100% increase in moisture absorbing and desorbing properties.…”

Section: Morphologymentioning

confidence: 68%

“…The carbonization process does not require any chemical additions, and the cellular anatomical features of the wood are retained in the new carbon material (Treusch et al 2004). In the authors' previous study, carbonized wood-based materials were introduced for use as environmentally friendly indoor construction materials, because they had excellent flame retardant qualities, sound absorption, electrical resistance, and hygric performance (Kwon et al 2013;Lee et al 2014;Park et al 2014). In particular, Lee et al (2014) reported that the moisture absorption and desorption capacity of medium-density fiberboard (MDF) were significantly improved by carbonization, and that the highest value was obtained at 600 °C.…”

Section: Introductionmentioning

confidence: 99%

Effect of Loess Treatment and Carbonization on the Hygric Performance of Medium-density Fiberboard

Lee¹,

Jang²,

Lee³

et al. 2017

BioResources

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The level of relative humidity is one of the key parameters in evaluating indoor air quality and comfort. In principle, humidity can be kept more uniform over time by use of materials that adsorb moisture from the air reversibly. This study was conducted to investigate the effect of loess treatment and carbonization on the hygric performance of mediumdensity fiberboard (MDF). The loess treatment was conducted with different sizes of loess particle prepared by a high-pressure homogenizer. After loess treatment on the surface of the MDF, it was carbonized at high temperature (600 °C). Loess is an abundant mineral high in Si content, which has high moisture absorption capacity, which remained after the carbonization process. The study also found that the loess treatment positively affected the hygric performance of carbonized MDF (c-MDF). The hygric performance of c-MDF almost doubled after the loess treatment compared with the non-treated c-MDF. However, the nano conversion of loess did not influence the hygric performance. Loess-treated carbonized MDF could be used as a humidity controller in buildings.

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“…Figure 6a shows the resistance of the carbon fibers decreased from 2.4 Ω to 1.9 Ω as the sintering temperature increased from 1200°C to 1350°C. The resistance could be related to the graphitization degree of carbon fibers with a turbostratic structure, which may be influenced by the carbonization temperature [36,37]. In addition, the densification of the ceramic composites may further compact the carbon fibers inside, which could contribute to the increased conductivity of the ceramic composites obtained at higher temperature.…”

Section: Micromorphology Of the Compositesmentioning

confidence: 99%

Simultaneous PAN Carbonization and Ceramic Sintering for Fabricating Carbon Fiber-Ceramic Composite Heaters

Tang

et al. 2019

Applied Sciences

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In this study, a single firing was used to convert stabilized polyacrylonitrile (PAN) fibers and ceramic forming materials (kaolin, feldspar, and quartz) into carbon fiber/ceramic composites. For the first time, PAN carbonization and ceramic sintering were achieved simultaneously in one thermal cycle and the microscopic morphologies and physical features of the obtained carbon fiber/ceramic composites were characterized in detail. The obtained carbon fiber/ceramic composite showed comparable flexural strength as commercial ceramic tiles. Meanwhile, the composite showed exceptional electro-thermal performance based on the electro-thermal performance of the carbonized PAN fibers, which could reach 108 ℃ after 15 s, 204 ℃ after 90 s, and 292 ℃ after 450 s at 5 V (2.6 A), thereby making the ceramic composite a good candidate as an indoor climate control heater, defogger device, kettle, and other heating element.

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Effect of carbonization temperature on electrical resistivity and physical properties of wood and wood-based composites

Cited by 42 publications

References 14 publications

Quinone‐Based Redox Supercapacitor Using Highly Conductive Hard Carbon Derived from Oak Wood

Quinone‐Based Redox Supercapacitor Using Highly Conductive Hard Carbon Derived from Oak Wood

Effect of Loess Treatment and Carbonization on the Hygric Performance of Medium-density Fiberboard

Simultaneous PAN Carbonization and Ceramic Sintering for Fabricating Carbon Fiber-Ceramic Composite Heaters

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