Skip to main content

and
  1. No Access

    Article

    Poly(phenylene sulfide) Graphite Composites with Graphite Nanoplatelets as a Secondary Filler for Bipolar Plates in Fuel Cell Applications

    Graphite nanoplatelets (GNPs) have been used as a secondary filler to improve the electrical conductivity of poly(phenylene sulfide) (PPS)/graphite composites for use as bipolar plates in fuel cells, and the e...

    Sang-Ha Kim, Jong Seok Woo, Soo-Young Park in Macromolecular Research (2020)

  2. Article

    Graphite block derived from natural graphite with bimodal particle size distribution

    This paper presents a novel method for the bimodal design of graphite blocks by optimizing the weight ratio of small-sized natural graphite (NG) particles (mean size of 5 μm) and large-sized NG particles (mean...

    Byung Choon Kim, Joon Young Cho, Moon Hee Lee, Joong Tark Han in SN Applied Sciences (2020)

  3. No Access

    Article

    Influence of oxyfluorinated graphite on fluorinated ethylene–propylene composites as bipolar plates

    Numerous studies have reported that good adhesion and fluorination of carbon materials in a fluoropolymer matrix enhance their electrical and mechanical properties. However, a composite reinforced with oxyfluo...

    Moon Hee Lee, Ho Young Kim, Jiwook Kim, Joong Tark Han, Young-Seak Lee in Carbon Letters (2020)

  4. No Access

    Article

    Poly(phenylene sulfide)-graphite composites for bipolar plates with preferred morphological orientation

    Bipolar plates in phosphoric acid fuel cells require inertness to phosphoric acid as well as excellent electrical, thermal, and mechanical properties. For this application, we prepared poly(phenylene sulfide) ...

    Ho-Joon Park, Jong Seok Woo, Soo-Young Park in Korean Journal of Chemical Engineering (2019)

  5. No Access

    Article

    High-Performance Fluorinated Ethylene-Propylene/Graphite Composites Interconnected with Single-Walled Carbon Nanotubes

    Herein, we report a novel method for the fabrication of highly conductive fluorinated ethylene-propylene (FEP)/graphite nanocomposites for high-temperature bipolar plates (BPs) by incorporating the well-disper...

    Ho-Joon Park, Jong Seok Woo, Sang Ha Kim, Kwang Sang Park in Macromolecular Research (2019)

  6. Article

    Open Access

    Publisher Correction: Synthesis of nanobelt-like 1-dimensional silver/nanocarbon hybrid materials for flexible and wearable electronics

    A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.

    Joong Tark Han, Jeong In Jang, Joon Young Cho, Jun Yeon Hwang in Scientific Reports (2018)

  7. Article

    Open Access

    Synthesis of nanobelt-like 1-dimensional silver/nanocarbon hybrid materials for flexible and wearable electronics

    Most synthetic processes of metallic nanostructures were assisted by organic/inorganic or polymeric materials to control their shapes to one-dimension or two-dimension. However, these additives have to be remo...

    Joong Tark Han, Jeong In Jang, Joon Young Cho, Jun Yeon Hwang in Scientific Reports (2017)

  8. No Access

    Article

    High-Throughput Fabrication of Silver Nanowire Networks That are Highly Stable under Current Flow by In Situ Interconnection with Single-Walled Carbon Nanotubes

    The junction resistance control of conducting networks is a crucial factor for high performance of the network-structured conducting film. Here, we show that silver nanowire (AgNW) networks can be stabilized b...

    Joong Tark Han, Jong Seok Woo, Sunshin Jung in MRS Online Proceedings Library (2015)

  9. Article

    Open Access

    Rearrangement of 1D Conducting Nanomaterials towards Highly Electrically Conducting Nanocomposite Fibres for Electronic Textiles

    Nanocarbon-based conducting fibres have been produced using solution- or dry-spinning techniques. Highly conductive polymer-composite fibres containing large amounts of conducting nanomaterials have not been p...

    Joong Tark Han, Sua Choi, Jeong In Jang, Seung Kwon Seol in Scientific Reports (2015)

  10. Article

    Open Access

    Extremely Efficient Liquid Exfoliation and Dispersion of Layered Materials by Unusual Acoustic Cavitation

    Layered materials must be exfoliated and dispersed in solvents for diverse applications. Usually, highly energetic probe sonication may be considered to be an unfavourable method for the less defective exfolia...

    Joong Tark Han, Jeong In Jang, Haena Kim, Jun Yeon Hwang in Scientific Reports (2014)

  11. Article

    Open Access

    Electrically Robust Metal Nanowire Network Formation by In-Situ Interconnection with Single-Walled Carbon Nanotubes

    Modulation of the junction resistance between metallic nanowires is a crucial factor for high performance of the network-structured conducting film. Here, we show that under current flow, silver nanowire (AgNW...

    Jong Seok Woo, Joong Tark Han, Sunshin Jung, Jeong In Jang in Scientific Reports (2014)

  12. No Access

    Article

    Dispersant-free conducting pastes for flexible and printed nanocarbon electrodes

    The dispersant-free fabrication of highly conducting pastes based on organic solvents with nanocarbon materials such as carbon nanotubes and graphene nanoplatelets has been hindered by severe agglomeration. He...

    Joong Tark Han, Bo Hwa Jeong, Seon Hee Seo, Kwang Chul Roh in Nature Communications (2013)

  13. No Access

    Article

    The suppression of leakage current in the solid phase crystallized silicon (SPC-Si) TFT employing off-state bias annealing under light illumination

    We fabricated PMOS SPC-Si TFTs which show better current uniformity than ELA poly-Si TFTs and superior stability compare to a-Si:H TFT on a glass substrate employing alternating magnetic field crystallization....

    Sang-Geun Park, Seung-Hee Kuk, Jong-Seok Woo, Min-Koo Han in MRS Online Proceedings Library (2011)

  14. No Access

    Article

    High Haze and Low Resistive MgO/AZO Bi-layer Transparent Conducting Oxide for Thin Film Solar Cells

    We have propsed MgO/AZO bi-layer transparent conducting oxide (TCO) for thin film solar cells. From XRD analysis, it was observed that the full width at half maximum of AZO decreased when it was grown on MgO p...

    Dong Won Kang, Jong Seok Woo, Sung Hwan Choi in MRS Online Proceedings Library (2011)