研究者業績

Hiroshi Satone

  (佐藤根 大士)

Profile Information

Affiliation
Associate Professor, Graduate School of Engineering, University of Hyogo
Hosei University
Degree
博士(工学)(名古屋大学)

J-GLOBAL ID
201801019621021223
researchmap Member ID
B000315703

External link

Research History

 5

Papers

 57
  • Shogo Taguchi, Soh Hamanishi, Hiroshi Satone, Takuji Yamamoto
    Journal of oleo science, 73(6) 887-894, Jun 1, 2024  Peer-reviewed
    Bicellar mixtures containing diacetylene molecules, such as diynoic acids, can be used as parent materials for functional membranes. A bicellar mixture consisting of a diynoic acid-10,12-tricosadiynoic acid (TCDA)-, a phospholipid-1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC)-, and a detergent-3-[(3-cholamidopropyl) dimethylammonio]-2-hydroxypropanesulfonate (CHAPSO)-was evaluated for its morphology and packing of TCDA molecules in its bicellar mixture. A TCDA/DMPC vesicle was prepared at different molar ratios, TCDA/DMPC = 2/8, 5/5, and 8/2; a TCDA/DMPC/CHAPSO bicellar mixture was prepared by mixing a CHAPSO solution with a TCDA/DMPC vesicle solution as a detergent at different composition ratios, x TCDA/DMPC = [TCDA/DMPC]/([TCDA/DMPC]+[CHAPSO]), of 1.0, 0.70, 0.50, and 0.30. A DMPC molecule formed a bilayer membrane structure and was used to suppress its precipitation. The packing density of the TCDA/DMPC/CHAPSO bicellar mixtures was increased by mixing a CHAPSO molecule in x TCDA/DMPC = 1.0 to 0.70 or 0.50. A TEM image of a TCDA/DMPC/CHAPSO bicellar mixture showed many discoidal assemblies at x TCDA/DMPC = 0.5 of TCDA/DMPC = 5/5. Polymerization of the TCDA molecules in the bicellar mixture by UV light suggested an ordered arrangement of TCDA. Polymerization at x TCDA/DMPC = 0.70 and 0.50 correlated with improved packing density.
  • Takuji Yamamoto, Mélaz Tayakout-Fayolle, Barbara Browning, Shogo Taguchi, Hiroshi Satone, Kouji Maeda
    Journal of Materials Science, 59(7) 3168-3176, Feb 5, 2024  Peer-reviewed
  • Ryuki Tsuji, Kenichirou Tanaka, Kouta Oishi, Takaya Shioki, Hiroshi Satone, Seigo Ito
    Chemistry of Materials, 35(20) 8574-8589, Oct 24, 2023  Peer-reviewed
    To fabricate fully printed carbon-based multiporous-layered-electrode perovskite solar cells (MPLE-PSCs), a polymer binder thickener had to be added to the carbon paste for the conductive carbon electrode. The polymer binder thickener is a key material to control the dispersion of carbon particles, viscosity for screen printing, and thickness and porosity of carbon electrodes. In this work, the role and effect of polymer binder thickeners for high-temperature carbon porous electrodes on MPLE-PSCs have been investigated in detail. Several carbon pastes with/without polymer binder thickeners (4 types of ethyl cellulose and 2 types of hydroxypropyl cellulose, which have different viscosities) were compared. What we understand in this paper are (1) Aggregation and dispersion of carbon particles are controlled by the polymer binder thickener (ethyl cellulose and/or hydroxypropyl cellulose); (2) For the porous carbon electrodes, the polymer binder thickeners are carbonized during the sintering procedure at 400 °C and can be kept on the surface of carbon particles as the additional carbon surface skin, which improves the conductivity; (3) The polymer binder thickeners can help the formation of a fine mesoporous structure in the annealed carbon electrodes. Combinations of results between viscosity, thermal, and specific surface area analyses revealed the close relationship between device performance and printability, dispersibility, and porosity brought by the polymer binder thickeners. As a result, the addition of a 20 wt % polymer binder thickener improved the average power conversion efficiency (PCE) from 9.52 ± 2.04 to 10.86 ± 0.85%, achieving a champion PCE of 12.06%.
  • Saki OHISHI, Shogo TAGUCHI, Hiroshi SATONE, Kazuhiro ITOH, Kouji MAEDA, Takuji YAMAMOTO
    Journal of Environmental Conservation Engineering, 51(6) 293-300, Nov 20, 2022  Peer-reviewed
  • Hiroshi Satone, Naoki Imaida, Nao Mouri, Kenji Iimura, Akio Nasu
    Journal of the Society of Powder Technology, Japan, 59(6) 291-296, Jun 10, 2022  Peer-reviewed
    In this study, a novel reversible control method of particle dispersion/flocculation for nonaqueous solvent was developed. Titanium oxide was used as sample powder. Cyclopentasiloxane was used as solvent and Polyoxyethylene polyalkylsiloxane was used as a dispersant. First, a well-dispersed slurry was prepared by adding dispersant. After preparation, alcoholic amphiphilic molecule was added to the well-dispersed slurry to convert it from liquid to a gel-like consistency, which was caused by the hydrogen bond of dispersant on the surface of the particles. The resultant gel could easily be changed to liquid state by shaking. In addition, the slurry reverted back to gel state after a certain period of time. It was found that the relative permittivity and the additive amount of amphiphilic molecule has an influence on the strength of the gel.

Misc.

 14
  • 佐藤根大士
    化学工学, 87(10) 429-431, Oct 5, 2023  
  • 芦澤 直太郎, 小西 剛, 澁谷 夏子, 小川 道, 舩山 智信, 佐藤根 大士, 佐藤 浩二
    粉体技術, 15(5) 430-436, May 5, 2023  
  • 佐藤根大士
    化学工学, 86(10) 477-478, Oct 5, 2022  
  • SATONE Hiroshi
    Hosokawa Powder Technology Foundation ANNUAL REPORT, 29 30-35, May 25, 2022  
    The tape casting process is widely used in various industrial processes. A plasticizer is added to a slurry to improve moldability and provide flexibility to a sheet. These results in quality instability and an increase in CO2 emissions. A soft-flocculated slurry was generated in this work employing polyelectrolytes as a dispersion and a linear polymer with a charge reversal to the charge of the dispersant at both terminals as a soft-flocculant. A well-dispersed slurry was prepared by adding dispersant beforehand. After that, a soft-flocculant was added to the well-dispersed slurry. By adding soft-flocculant, the well-dispersed slurry was changed to a gel state because of the crosslinking of dispersant. The resultant gel was soft and could easily be changed into a liquid by shaking. The soft-flocculated slurry was optimized by selecting the appropriate agent and controlling the additive amount of the agent. A tape was casted using the doctor blade method. As a result, a thin tape could be cast without the use of a plasticizer using an optimized soft-flocculated slurry. The quality of this tape was comparable to that of a conventional method. Furthermore, the cast tapes showed high homogeneity and good flexibility resistance to bending use.

Books and Other Publications

 12

Presentations

 123

Research Projects

 12

Social Activities

 2