Research profile of Hiroyuki Usui, Dr.
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   my face     Name Hiroyuki Usui   (薄井洋行 / うすいひろゆき)
    Affiliation Applied Chemistry Course, Department of Chemistry and Biotechnology,
Graduate School of Engineering
    Position Associate Professor
    Field Electrochemistry, Photoelectrochemistry, Materials Science, Semiconductor Engineering
    E-mail usui(at)chem.tottori-u.ac.jp



--- Research themes ---

    Optical properties of metal oxide nanoparticles prepared by laser ablation in liquid
    Synthesis of layered organic/inorganic nanocomposites consisting of pillared surfactant molecules and zinc hydroxide
    Structure analysis of GaAs nanocrystals on Si surface prepared by molecular beam epitaxy
    Characterization of photocatalytic property for nanostructured ZnO
    Fabrication of photo-electrochemical capacitor comprised of transition metal oxide electrodes
    Development of next-generation Si-based anode materials for Li-ion battery
    Synthesis of novel Na-storage materials consisted of metal oxides


--- Academic career ---
  学歴
  1993年3月 山口県立宇部高等学校 卒業
  1997年3月 鹿児島大学工学部 電気電子工学科 卒業 【宮ア智行研究室】
  1999年3月 九州大学大学院総合理工学研究科 エネルギー変換工学専攻 修士課程修了 【中島秀紀研究室】
  2003年9月 鹿児島大学大学院理工学研究科 物質生産工学専攻 博士後期課程修了 【宮ア智行研究室】
  2003年9月 博士(工学)

  職歴
  1999年4月 株式会社松下電器産業 マルチメディア開発センター 音響グループ
  2003年10月 産業技術総合研究所 界面ナノアーキテクトニクス研究センター 特別研究員 【越崎直人グループ】
  2005年6月 神戸大学連携創造本部 先端研究推進部門 研究機関研究員 【工学部機械工学科,保田英洋研究室】
  2007年4月 財団法人電気磁気材料研究所 附置研究所 光学材料グループ 研究員 【阿部世嗣グループ】
  2009年4月 鳥取大学大学院工学研究科 化学・生物応用工学専攻 助教
  2013年12月 鳥取大学大学院工学研究科 化学・生物応用工学専攻 准教授
        現在に至る
   □ Kagoshima University (鹿児島大学) ; 2000 - 2003 (Ph.D. candidate)
       Graduate School of Science and Engineering, Material Science and Production Engineering Course (Department of Electrical and Electronic Engineering),
       learned from Prof. Y. Horie and Prof. T. Miyazaki
   □ National Institute of Advanced Industrial Science of Technology (AIST)(産業技術総合研究所) ; 2003 - 2005 (Post-doctoral researcher)
       High Interface Area Nanostructure Team, Nanoarchitectonics Research Center,
       worked under Dr. T. Sasaki and Dr. N. Koshizaki
   □ Kobe University (神戸大学); 2005 - 2007 (Research institute fellow)
       Venture Business Laboratory, Department of Frontier Research and Technology, Headquarters for Innovative Cooperation and Development
       worked under Prof. H. Yasuda
   □ Research Institute for Electric and Magnetic Materials (RIEMM)(電気磁気材料研究所); 2007 - 2009 (Research scientist)
       Optical Materials Group,
       worked under Dr. S. Abe
   ■ Tottori University (鳥取大学); 2009 - 2013.11 (Assistant Professor), 2013.12-present (Associate Professor)
       Applied Chemistry Course, Department of Chemistry and Biotechnology, Graduate School of Engineering
       working under Prof. H. Sakaguchi



--- Membership of Academic Society ---

    The Japan Society of Applied Physics (JSAP), 2000-present     (応用物理学会)
    The Electrochemical Society of Japan, 2003-present          (電気化学会)
    The Japan Institute of Metals and Materials, 2007-2009          (日本金属学会)
    Photo functionalized materials society, 2008-2009          (光機能材料研究会)
    The Photofunctional Complexes Research Association, 2008-present          (複合系の光機能研究会)
    The Rare Earth Society of Japan, 2009-present            (日本希土類学会)
    The Chemical Society of Japan, 2009-present            (日本化学会)
    The Committee of Battery Technology, 2010-present        (電池技術委員会)


--- Recent publications selected ---

Hiroyuki Usui, Yasuhiro Domi, Sachi Ohshima, and Hiroki Sakaguchi, Electrochim. Acta, 246 (2017) 280-284.
   "LaSn3 as a novel anode material for Na-ion battery"
Hiroyuki Usui, Yasuhiro Domi, Kohei Fujiwara, Masahiro Shimizu, Takayuki Yamamoto, Toshiyuki Nohira, Rika Hagiwara, and Hiroki Sakaguchi, ACS Energy Lett., 2 (2017) 1139-1143.
   "Charge-Discharge Properties of a Sn4P3 Negative Electrode in Ionic Liquid Electrolyte for Na-Ion Batteries"
Hiroyuki Usui, Kentaro Koseki, Takahiro Tamura, Yasuhiro Domi, and Hiroki Sakaguchi, Mater. Lett., 186 (2017) 338-340.
   "Light energy storage in TiO2/MnO2 composite electrode for photoelectrochemical capacitor"
Hiroyuki Usui, Yasuhiro Domi, Sho Yoshioka, Kazuki Kojima, and Hiroki Sakaguchi, ACS Sustainable Chem. Eng., 4 (12) (2016) 6695-6702.
   "Electrochemical Lithiation and Sodiation of Nb-Doped Rutile TiO2"
Hiroyuki Usui and Hiroki Sakaguchi, J. Aerosol Res., 31 (4) (2016) 247-253.
   "Preparation of Next-Generation Rechargeable Battery Anodes Using Aerosol Process and Evaluation of Their Charge-Discharge Performances"
   selected for journal cover page.
Hiroyuki Usui, Yasuhiro Domi, Masahiro Shimizu, Akinobu Imoto, Kazuki Yamaguchi, and Hiroki Sakaguchi, J. Power Sources, 329 (2016) 428-431.
   "Niobium-doped titanium oxide anode and ionic liquid electrolyte for a safe sodium-ion battery"
Hiroyuki Usui, Takuma Sakata, Masahiro Shimizu, and Hiroki Sakaguchi, Electrochemistry, 83 (10) (2015) 810-812.
   "Electrochemical Na-insertion/extraction properties of Sn-P anodes"
Hiroyuki Usui, Masakuni Narita, Yoshihiro Fujita, and Hiroki Sakaguchi, J. Surf. Sci. Soc. Jpn., 36 (7) (2015) 334-338.
   "Silicon-based Anodes and Optimized Interface between Electrodes and Electrolytes for Next Generation Lithium-Ion Battery"
Hiroyuki Usui, Sho Yoshioka, Kuniaki Wasada, Masahiro Shimizu, and Hiroki Sakaguchi, ACS Appl. Mater. Interfaces, 7 (12) (2015) 6567-6573.
   "Nb-Doped Rutile TiO2: a Potential Anode Material for Na-Ion Battery"
Hiroyuki Usui, Kazuma Nouno, Yuya Takemoto, Kengo Nakada, Akira Ishii, and Hiroki Sakaguchi, J. Power Sources, 268 (2014) 848-852.
   "Influence of mechanical grinding on lithium insertion and extraction properties of iron silicide/silicon composites"
Hiroyuki Usui, Masahito Nomura, Hiroki Nishino, Masatoshi Kusatsu, Tadatoshi Murota, and Hiroki Sakaguchi, Mater. Lett., 130 (2014) 61-64.
   "Gadolinium silicide/silicon composite with excellent high-rate performance as lithium-ion battery anode"
Hiroyuki Usui, Kuniaki Wasada, Masahiro Shimizu, and Hiroki Sakaguchi, Electrochim. Acta, 111 (2013) 575-580.
   "TiO2/Si composites synthesized by sol-gel method and their improved electrode performance as Li-ion battery anodes"
Hiroyuki Usui and Hiroki Sakaguchi, J. Nanoeng. Nanomanuf., 3 (4) (2013) 311-316.
   "Morphology Control of ZnO for Li-Ion Battery Anode"
Hiroyuki Usui, Takamasa Kono, and Hiroki Sakaguchi, J. Nanoeng. Nanomanuf., 3 (4) (2013) 326-330.
   "Electrochemical Properties of Metal/ZnO Composites Synthesized by Co-Precipitation Method for Li-Ion Battery Anode"
Hiroyuki Usui, Masahiro Shimizu, and Hiroki Sakaguchi, J. Power Sources, 235 (2013) 29-35.
   "Applicability of ionic liquid electrolytes to LaSi2/Si composite thick-film anodes in Li-ion battery"
Hiroyuki Usui, Naoki Uchida, and Hiroki Sakaguchi, Electrochemistry, 80 (10) (2012) 737-739.
   "Improved anode performance of Ni-P-coated Si thick-film electrodes for Li-ion battery"
Hiroyuki Usui, Yusuke Kiri, and Hiroki Sakaguchi, Thin Solid Films, 520 (2012) 7006-7010.
   "Effect of carrier gas on anode performance of Si thick-film electrodes prepared by gas-deposition method"
Hiroyuki Usui, Takamasa Kono, and Hiroki Sakaguchi, Int. J. Electrochem. Sci., 7 (2012) 4322-4334.
   "Novel composite thick-film electrodes consisted of zinc oxide and silicon for lithium-ion battery anode"
Hiroyuki Usui, Toshikazu Masuda, and Hiroki Sakaguchi, Chem. Lett., 41 (5) (2012) 521-522.
   "Li-insertion/extraction properties of Si thick-film anodes in ionic liquid electrolytes based on bis(fluorosulfonyl)amide and bis(trifluoromethanesulfonyl)amide anions"
Hiroyuki Usui, Naoki Uchida, and Hiroki Sakaguchi, J. Power Sources, 196 (2011) 10244-10248.
   "Influence of order in stepwise electroless deposition on anode properties of thick-film electrodes consisting of Si particles coated with Ni and Cu"
Hiroyuki Usui, Kazuki Maebara, Koji Nakai, and Hiroki Sakaguchi, Int. J. Electrochem. Sci., 6 (2011) 2246-2254.
   "Anode properties of composite thick-film electrodes consisted of Si and various metal silicides"
Hiroyuki Usui, Yoshihisa Yamamoto, Kazuhide Yoshiyama, Toshiyuki Itoh, and Hiroki Sakaguchi, J. Power Sources, 196 (2011) 3911-3915.
   "Application of electrolyte using novel ionic liquid to Si thick film anode of Li-ion battery"
Hiroyuki Usui, Masafumi Shibata, Koji Nakai, and Hiroki Sakaguchi, J. Power Sources, 196 (2011) 2143-2148.
   "Anode properties of thick-film electrodes prepared by gas deposition of Ni-coated Si particles"
Hiroyuki Usui, Hiroyuki Nishinami, Takahisa Iida, and Hiroki Sakaguchi, Electrochemistry, 78 (5) (2010) 329-331.
   "Anode properties of Cu-coated Si thick film electrodes prepared by electroless deposition and gas-deposition"
   received "2011 outstanding paper award" from The Electrochemical Society of Japan.
Hiroyuki Usui, Yuta Kashiwa, Takahisa Iida, and Hiroki Sakaguchi, J. Power Sources, 195 (2010) 3649-3654.
   "Anode properties of Ru-coated Si thick film electrodes prepared by gas-deposition"

Hiroyuki Usui, Seishi Abe, Shigehiro Ohnuma, J. Phys. Chem. C, 113 (2009) 20589-20593.
   "InSb/Al-O nanogranular films prepared by RF sputtering"
Hiroyuki Usui, J. Colloids Interface Sci., 336 (2009) 667-674.
   "Surfactant concentration dependence of structure and photocatalytic property of zinc oxide rods prepared using chemical synthesis in aqueous solutions"
Hiroyuki Usui, Mater. Lett., 63 (2009) 1489-1492.
   "The effect of surfactants on the morphology and optical properties of precipitated wurtzite ZnO"
Hiroyuki Usui, Satoshi Mukai, Hidehiro Yasuda, and Hirotaro Mori, J. Cryst. Growth, 311 (2009) 2269-2274.
   "Structure analysis of GaAs nanocrystals with anisotropic basal plane grown on Si(100) surface"
Hiroyuki Usui, Hidehiro Yasuda, and Hirotaro Mori, Physica E, 40 (2008) 836-842.
   "Effect of substrate temperature on growth process of GaAs on Si(110) vicinal surface studied by reflection high-energy electron diffraction"
Hiroyuki Usui, Hidehiro Yasuda, and Hirotaro Mori, Thin Solid Films, 516 (2008) 2487-2490.
   "Crystal shape of GaAs nanocrystals deposited on Si(100) by molecular beam epitaxy"
Hiroyuki Usui, J. Phys. Chem. C, 111 (2007) 9060-9065.
   "Influence of surfactant micelles on morphology and photoluminescence of zinc oxide nanorods prepared by one-step chemical synthesis in aqueous solution"
Hiroyuki Usui, Hidehiro Yasuda, and Hirotaro Mori, Appl. Phys. Lett., 89 (2006) 173127-1-3.
   "Morphology and lattice coherency in GaAs nanocrystals grown on Si(100) surface"
   selected as an excellent paper for "Virtual Journal of Nanoscale Science & Technology, 14 (19) (2006)" by The American Institute of Physics.
Hiroyuki Usui, Kotaro Ishiji, Hidehiro Yasuda, and Hirotaro Mori, J. Cryst. Growth, 289 (2006) 76-80.
   "Growth process and nanostructure of crystalline GaAs on Si(110) surface prepared by molecular beam epitaxy"
Hiroyuki Usui, Takeshi Sasaki, and Naoto Koshizaki, Chem. Lett., 35 (2006) 752-753.
   "Formation process of platelet nanocomposites with zinc hydroxide and sodium dodecyl sulfate prepared by laser ablation in solution"
Hiroyuki Usui, Takeshi Sasaki, and Naoto Koshizaki, J. Phys. Chem. B, 110 (2006) 12890-12895.
   "Optical transmittance of indium tin oxide nanoparticles prepared by laser-induced fragmentation in water"
Hiroyuki Usui, Takeshi Sasaki, and Naoto Koshizaki, Appl. Phys. Lett., 87 (2005) 063105-1-3.
   "Ultraviolet emission from layered nanocomposites of Zn(OH)2 and sodium dodecyl sulfate prepared by laser ablation in liquid"
Hiroyuki Usui, Takeshi Sasaki, and Naoto Koshizaki, Chem. Lett., 34 (2005) 701-702.
   "Effect of alkyl chain length on layered structure of Zn nanocomposites prepared by laser ablation of Zn in aqueous solution of sodium alkyl sulfate"
Hiroyuki Usui,Yoshiki Shimizu, Takeshi Sasaki, and Naoto Koshizaki, J. Phys. Chem. B, 109 (2005) 120-124.
   "Photoluminescence of ZnO nanoparticles prepared by pulsed laser ablation in different surfactant solutions"
Hiroyuki Usui, Ousuke Miyamoto, Teruaki Nomiyama, Yuji Horie, and Tomoyuki Miyazaki, Sol. Energy Mater. Sol. Cells, 86 (2005) 123-134.
   "Photo-rechargeability of TiO2 film electrode prepared by pulsed laser deposition"



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