研究者業績

佐藤根 大士

サトネ ヒロシ  (Hiroshi Satone)

基本情報

所属
兵庫県立大学 大学院 工学研究科 准教授
法政大学 大学院スラリー工学研究所 特任研究員
学位
博士(工学)(名古屋大学)

J-GLOBAL ID
201801019621021223
researchmap会員ID
B000315703

外部リンク

論文

 57
  • Shogo Taguchi, Soh Hamanishi, Hiroshi Satone, Takuji Yamamoto
    Journal of oleo science 73(6) 887-894 2024年6月1日  査読有り
    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 2024年2月5日  査読有り
  • Ryuki Tsuji, Kenichirou Tanaka, Kouta Oishi, Takaya Shioki, Hiroshi Satone, Seigo Ito
    Chemistry of Materials 35(20) 8574-8589 2023年10月24日  査読有り
    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 2022年11月20日  査読有り
  • Hiroshi Satone, Naoki Imaida, Nao Mouri, Kenji Iimura, Akio Nasu
    Journal of the Society of Powder Technology, Japan 59(6) 291-296 2022年6月10日  査読有り
    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 2023年10月5日  
  • 佐藤根大士, 松田聡, 前田光治
    化学工学 87(9) 399-402 2023年9月5日  
  • 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 2023年5月5日  
  • 佐藤根大士
    化学工学 86(10) 477-478 2022年10月5日  
  • 佐藤根 大士
    ホソカワ粉体工学振興財団年報 29 30-35 2022年5月25日  
    スラリーの塗布膜成形非常に幅広い分野で利用されているが,通常は成形性向上および柔軟性付与のため大量の可塑剤を添加するなどしており,製品品質およびCO2排出量への影響が懸念されてきた.本研究では,高分子電解質分散剤を用いて一旦粒子を良分散状態としたのち,軟凝集添加剤として両末端に高分子分散剤とは逆の電荷を持つ直鎖状の分子を添加して粒子表面の高分子分散剤をイオン架橋させることで,静置時は降伏値を持つ緩いゲルを形成し,軽い震盪で容易に流動状態へと移行し,時間が経過すれば再度ゲル状態に戻るという可逆性を有した軟凝集性スラリーの調製に成功した.このスラリーを用いてドクターブレード法によりシート成形を行ったところ,適切な軟凝集添加剤および添加量とすることで,従来法のような多量の可塑剤を添加することなく均一なシートの成形に成功した.さらに,得られたシートは折り曲げても割れることのない高い柔軟性を有していた.

書籍等出版物

 12

講演・口頭発表等

 123

共同研究・競争的資金等の研究課題

 12

社会貢献活動

 2