UI Koichi

J-GLOBAL         Last updated: Jun 8, 2019 at 03:36
 
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Name
UI Koichi
Affiliation
Iwate University

Research Areas

 

Academic & Professional Experience

 
Apr 2016
   
 
Associate Professor, Chemistry course, Iwate University, Department of Chemistry and Biological Sciences, Faculty of Science and Engineering, Iwate University
 

Published Papers

 
Removal of strontium from aqueous solutions using scallop shell powder
Fumihiro MIHARA, Yuta SHUSEKI, Sanae TAMURA, Koichi UI, Kenta KIKUCHI, Atsuo YASUMORI, Shinichi KOMABA, Mika FUKUNISHI, Yasuo KOGO, Yasushi IDEMOTO, Ken TAKEUCHI*
J. Ceram. Soc. Jpn.   127(2) 111-116   Feb 2019   [Refereed]
XAFS Analysis of Voltage Depression Mechanism after Charge-Discharge Cycling Tests for Li-rich Cathode Materials
Yuki Takei, Takahiro Endo, Akari Matsutomo, Hisashi Watanabe, Yoshihiro Kadoma, and Koichi Ui
SPring-8/SACLA   6(2) 270-276   Aug 2018   [Refereed]
In situ Scanning Electron Microscopy of Silicon Anode Reactions in Lithium-Ion Batteries during Charge/Discharge Processes
Chih-Yao Chen, Teruki Sano, Tetsuya Tsuda*, Koichi Ui, Yoshifumi Oshima, Masaki Yamagata, Masashi Ishikawa, Masakazu Haruta, Takayuki Doi, Minoru Inaba, and Susumu Kuwabata
Scientific Reports   6 36153   Oct 2016   [Refereed]
Studies on Components of Aluminium Negative Electrode for the Secondary Batteries with Room Temperature Molten Salt Electrolyte "jointly worked"
Nobuyuki Koura*, Hidenori Tsuda, Koichi Ui
Denki Kagaku,(presently Electrochemistry)   64(11) 1195-1199   Nov 1996   [Refereed]
Positive Electrode Active Material for the Rocking Chair Type Lithium Secondary Battery with an Ambient Temperature Molten Salt as a Nonflammable Electrolyte "jointly worked"
K. Ui, N. Koura, Y. Idemoto, and K. Iizuka
Denki Kagaku,(presently Electrochemistry)   65(2) 161-162   Feb 1997   [Refereed]
Li-Al Negative Electrode Characteristics for the Rocking Chair Type Lithium Secondary Battery with a nonflammable Ambient Temperature Molten Salt Electrolyte "jointly worked"
Nobuyuki Koura, Koichi Ui
Journal of Japan Institute of Light Metals   47(5) 267-272   May 1997   [Refereed]
V2O5 Positive Electrode Characteristics for the Rocking Chair Type Lithium Secondary Battery with a nonflammable Ambient Temperature Molten Salt Electrolyte "jointly worked"
Nobuyuki Koura, Koichi Ui, Kazuyuki Takeishi
Journal of Japan Institute of Light Metals   47(5) 273-278   May 1997   [Refereed]
Discharge-Charge Characteristic of K -β-ferrite as Electrode Active Material for Lithium Secondary Battery "jointly worked"
S. Ito, K. Ui, M. Ito, N. Koura, and K. Akashi
Journal of the Magnetics Society of Japan   22(5) 449-451   May 1998   [Refereed]
Lithium secondary battery using potassium -β- ferrite as a new cathode active material "jointly worked"
S. Ito, K. Ui, N. Koura, and K. Akashi
Solid State Ionics   113-115 17-21   Nov 1998   [Refereed]
Li and Li-Al Negative Electrode Characteristics for the Lithium Secondary Battery with a Nonflammable SOCl2, Li Added, LiCl Saturated AlCl3-EMIC Molten Salt Electrolyte "jointly worked"
N. Koura, K. Iizuka, Y. Idemoto, and K. Ui
Electrochemistry   67(6) 706-712   Jun 1999   [Refereed]
Preparation of Binder-Free Carbon Film by Electrophoretic Deposition Method "jointly worked"
N. Koura, H. Tsuiki, N. Terakura, Y. Idemoto, F. Matsumoto, K. Ui, K. Yamada, and T. Mitate
Journal of The Surface Finishing Society of Japan   52(1) 143-144   Jan 2001   [Refereed]
Fabrication of Carbon Anode for Li-ion Secondary Batteries Prepared by Electrophoretic Deposition Method "jointly worked"
N. Koura, S. Funo, H. Tsuki, Y. Idemoto, K. UI, F. Matsumoto
Journal of The Surface Finishing Society of Japan   53(10) 683-687   Oct 2002   [Refereed]
Dependence of Tc and Jc on Y Content and Oxygen Content for Bi1.76Pb0.44Sr1.86Ca2.08-xYxCu2.86Oy Superconducting Oxide "jointly worked"
Y. Idemoto, Y. Tsunochi, K. Ui, and N. Koura
Journal of the Ceramic Society of Japan   111(10) 781-785   Oct 2003   [Refereed]
Dependence of Li content on Crystal Structure during the Charge-Discharge Process of LiMn1.5Ni0.5O4 as a Cathode Materials for 5V Class Lithium Secondary Battery "jointly worked"
Y. Idemoto, H. Sekine, K. Ui, and N. Koura
Electrochemistry   71(12) 1142-1144   Dec 2003   [Refereed]
Electronic States of LiyMn2-xMxO4 (M=Mn, Mg, Ni, Co) as a cathode Active Material for Li Secondary Battery by First-Principles Calculation using DV-Xα Method "jointly worked"
Y. Ito, Y. Idemoto, K. Ui, and N. Koura
Electrochemistry   71(12) 1145-1147   Dec 2003   [Refereed]
Enhancement of electrochemical oxidation of glucose at Hg adatom-modified Au electrode in alkaline aqueous solution "jointly worked"
F. Matsumoto*, M. Harada, N. Koura, Y. Idemoto, and K. Ui
Electrochemistry   72(2) 103-110   Feb 2004   [Refereed]
Photocatalytic Activity of Ag-TiO2(anatase) Composite Film Prepared by Composite Coating "jointly worked"
F. Yamaguchi, T. Fujita, Y. Kanega, K. Ui, Y. Idemoto, and N. Koura*
Electrochemistry   72(3) 156-158   Mar 2004   [Refereed]
Oriented Electrodeposition of Aluminum from the Aluminum Chloride-1-Ethyl-3-Methylimidazolium Chloride Ambient Temperature Molten Salt -Effects of Xylene Mixing to the Orientation of Al Deposit- "jointly worked"
Koichi UI, Takashi YATSUSHIRO, Masaki FUTAMURA, Yasushi IDEMOTO, Nobuyuki KOURA
Journal of The Surface Finishing Society of Japan   55(6) 409-416   Jun 2004   [Refereed]
Physical Property, Crystal Structure and Electrode Performance Depend on Synthetic Condition of LiMn1.5Ni0.5O4 as Cathode Materials for 5V Class Lithium Secondary Battery "jointly worked"
Yasushi IDEMOTO*, Hiroshi SEKINE, Koichi UI, and Nobuyuki KOURA
Electrochemistry   72(8) 564-568   Aug 2004   [Refereed]
Thermodynamic Stability and Crystal Structure Dependence of Li Content for LixMn2-yMyO4(M=Mg, Al, Cr, Mn) as a Cathode Active Material for Li Secondary Battery "jointly worked"
Yasushi IDEMOTO*, Kazutaka HORIKO, Koichi UI, and Nobuyuki KOURA
Electrochemistry   72(10) 680-687   Oct 2004   [Refereed]
Li Content Dependence of Crystal Structure and Electronic Structure for Chemical Delithiation of LixMn2-yMyO4(M=Mg, Al, Cr, Mn, Co, Zn, Ni) as a Cathode Active Material for Li Secondary Battery "jointly worked"
Yasushi IDEMOTO*, Kazutaka HORIKO, Yuka ITO, Nobuyuki KOURA, and Koichi UI
Electrochemistry   72(11) 755-762   Nov 2004   [Refereed]
Effect of Ferroelectric Properties on Heat Treatment for Bi4-x+yLaxTi3O12-d(x=0.5, y=0; x=0.75, y=0;x=0.75, y=0.15) Ferroelectric Ceramics "jointly worked"
Y. Idemoto, N. Yokoyama, K. Ui, and N. Koura
Journal of the Ceramic Society of Japan   112(12) 669-673   Dec 2004   [Refereed]
Crystal Structural Change during Charge-Discharge Process of LiMn1.5Ni0.5O4 as Cathode Material for 5V Class Lithium Secondary Battery "jointly worked"
Y. Idemoto,H. Sekine, K. Ui, and N. Koura
Solid State Ionics   176(3-4) 299-306   Jan 2005   [Refereed]
Pb Content and Oxygen Content Dependences of Tc and Jc for Bi2.20-zPbzSr1.86Ca2.03Y0.05Cu2.86Oy Superconducting Oxide "jointly worked"
Y. Idemoto, Y. Tsunochi, T. Miyabe, K. Ui, and N. Koura
Journal of the Ceramic Society of Japan   113(2) 166-171   Feb 2005   [Refereed]
Positive Electrode Performance of Nonflammable Lithium Secondary Battery with Ambient Temperature Molten Salt Electrolyte "jointly worked"
K. Ui*, K. Ishikawa, T. Furuya, Y. Idemoto, and N. Koura
Electrochemistry   73(2) 120-122   Feb 2005   [Refereed]
Corrosion Behavior of Pb Alloys as Negative Current Collector for Lead Acid Batteries in Charged State "jointly worked"
N. Koura*, K. Kasuya, K. Ui, Y. Takiguchi, and Y. Idemoto
Electrochemistry   73(2) 135-140   Feb 2005   [Refereed]
High Purity Cu Deposition from Cu(I) Ion in CuCl-1-1Butylpyridinium Chloride Ambient-Temperature Molten Salts -Impurity in the Cu Deposit and Purification of the Melts- "jointly worked"
Nobuyuki KOURA, Satoshi SEIKI, Naotaka TANABE, Takashi YATSUSHIRO, Koichi UI, and Shigeru ITO
Journal of The Surface Finishing Society of Japan   56(3) 151-157   Mar 2005   [Refereed]
Application to Negative Electrode for Lithium Secondary Batteries of Electroplated Aluminum Electrode "jointly worked"
Koichi UI*, Takuto MINAMI, Kohei ISHIKAWA, Yasushi IDEMOTO, and Nobuyuki KOURA
Electrochemistry   73(4) 279-283   Apr 2005   [Refereed]
Structure of SnCl2-1-ethyl-3-methylimidazolium Chloride Ambient-Temperature Molten Salt using Density Functional Theory Calculation and Raman Spectroscopy "jointly worked"
H. MATSUZAWA, R. NAKAI, K. UI, N. KOURA*, and G. LING
Electrochemistry   73(8) 715-723   Aug 2005   [Refereed]
Lithium Battery Having a Large Capacity Using Fe3O4 as a Cathode Material "jointly worked"
S. Ito*, K. Nakaoka, M. Kawamura, K. Ui, K. Fujimoto, and N. Koura
J. Power Sources   146(1-2) 319-322   Aug 2005   [Refereed]
Development of Nonflammable Lithium Secondary Battery with Ambient-Temperature Molten Salt Electrolyte : Performance of binder-free carbon-negative electrode "jointly worked"
K. Ui*, T. Minami, K. Ishikawa, Y. Idemoto, and N. Koura
J. Power Sources   146(1-2) 698-702   Aug 2005   [Refereed]
Corrosion behavior of Fe-Cr alloy in Li2CO3-K2CO3 Molten Carbonate "jointly worked"
K. Takeuchi, A. Nishijima, K. Ui, N. Koura*, and Chun -K. Loon
J. Electrochem. Soc.   152(9) B364-B368   Sep 2005   [Refereed]
Li Content Dependence of Thermodynamic Stability and the Crystal Structure of LixMn1-yMyO2(M=Mn,Al,Cu) as a Cathode Active Material for Li Secondary Battery "jointly worked"
Yasushi Idemoto*, Yuji Konno, Koichi UI, and Nobuyuki Koura
Electrochemistry   73(9) 823-829   Sep 2005   [Refereed]
Properties, Crystal Structure and Performance of o-LiMnO2 as Cathode Material for Li Secondary Batteries "jointly worked"
Y. Idemoto*, T. Mochizuki, K. Ui , and N. Koura
J. Electrochem. Soc.   153(2) A418-A424   Feb 2006   [Refereed]
Neutron Studies of Rare Earth-Modified Zirconia Catalyst and Yttrium-Doped Barium Cerate Proton-Conducting Ceramic Membranes "jointly worked"
Chun -K. Loong, M. Ozawa, K. Takeuchi, K. Ui, and N. Koura
J. Alloys & Comp.   408-412 1065-1070   Feb 2006   [Refereed]
Electrodeposition of Aluminum-Carbon Nanotube Composite from Room-Temperature Molten Salt Electrolyte "jointly worked"
T. Yatsushiro, N. Koura*, S. Nakano, K. Ui, and K. Takeuchi
Electrochemistry   74(3) 233-236   Mar 2006   [Refereed]
Cu Deposition from Cuprous Ion in CuCl-1-Butylpyridinium Chloride Ambient-Temperature Molten Salt -Organic Solvent Mixed Bath "jointly worked"
Koichi UI, Kiyotaka NAKAYA, Yasuaki TAKAHASHI, Naotaka TANABE, Yasushi IDEMOTO, and Nobuyuki KOURA
Journal of The Surface Finishing Society of Japan   57(4) 300-301   Apr 2006   [Refereed]
Electrodeposition of Crack-Free Amorphous Zn-Ni Alloy from Organic Solvent Added ZnCl2-NiCl2-EMIC Ambient-Temperature Molten Salt Bath "jointly worked"
Koichi UI*, Naoko KAMIURA, Yasushi IDEMOTO, Nobuyuki KOURA and Takashi YAMAZAKI
Journal of The Surface Finishing Society of Japan   57(5) 383-384   May 2006   [Refereed]
Preparation of Ag-TiO2(anatase) particle composite coating film and its photocatalytic reaction mechanism "jointly worked"
K. Ui, T. Fujita, N. Koura*, and F. Yamaguchi
J. Electrochem. Soc.   153(6) C449-C454   Jun 2006   [Refereed]
Fabrication of Binder-Free Positive Electrode for Li-ion Secondary Batteries by Electrophoretic Deposition Method "jointly worked"
K. Ui*, S. Funo, H. Nagase, Y. Idemoto, and N. Koura
Electrochemistry   74(6) 474-478   Jun 2006   [Refereed]
Application of poly-p-phenylene as Positive Electrode Active Material for Al Secondary Battery with Ambient-Temperature Molten Salt Electrolyte "jointly worked"
K. Ui, Y. Kuma, and N. Koura
Electrochemistry   74(7) 536-538   Jul 2006   [Refereed]
Growth model of Reversed Taper during Early Stage of D.C. Etching on Aluminum Oriented to (100), "jointly worked"
K. Ui, T. Yamazaki, N. Koura*, Y. Idemoto, T. Makino, M. Furukawa, and H. Uchi
Electrochemistry   74(9) 737-743   Sep 2006   [Refereed]
Cathode Performance of Lithium Non-stoichiometric Li[Lix(Ni1/3Co1/3Mn1/3)1-x]O2 Material for Li-ion Batteries "jointly worked"
Jung-Min Kim, Naoaki Kumagai*, Yoshihiro Kadoma, Koichi Ui, and Hitoshi Yashiro
ITE Letters on Batteries, New Technologies & Medicine   7(5) 454-457   Oct 2006   [Refereed]
Preparation of Pb-Zr-Ti-Nb-Si-O Ferroelectric Thick Film by Electrophoretic Deposition "jointly worked"
Yasushi Idemoto*, Satoshi Yoshida, Koichi Ui, and Nobuyuki Koura
Electrochemistry   74(11) 883-889   Nov 2006   [Refereed]
A Local Structure Analysis of Molten Li2CO3 Using the Density Functional Theory "jointly worked"
Hidetoshi Morita, Hideaki Ohata, Ken Takeuchi, Koichi Ui, Kozo Kozawa, and Nobuyuki Koura*
Electrochemistry   75(6) 466-471   Jun 2007   [Refereed]
Fabrication of Electrode for Capacitor Cell Prepared by Electrophoretic Deposition Method "jointly worked"
Koichi Ui*, Kazuma Okura, Nobuyuki Koura, Satoru Tsumeda, and Kenji Tamamitsu
Electrochemistry   75(8) 604-606   Aug 2007   [Refereed]
Equilibrium Geometries and Structural Stability of the AlmNan (m=2-4; n=1-8) Clusters "jointly worked"
H. Matsuzawa*, K. Sato, T. Hirata, K. Ui, and N. Koura
Journal of Chemical Theory and Computation.   3(5) 1818-1829   Sep 2007   [Refereed]
Electrochemical Properties of Li1+x(Ni0.4Co0.2Mn0.4)1-xO2 (x = 0.00 and 0.05) for Lithium-ion Batteries "jointly worked"
Jung-Min Kim, Yoshihiro Kadoma, Koichi Ui, and Naoaki Kumagai*
ITE Letters on Batteries, New Technologies & Medicine   8(5) B12-B16   Oct 2007   [Refereed]
Development of novel anodic catalyst for solid oxide fuel cell operated at intermediate-temperature direct utilizing of dimethylether fuel "jointly worked"
Ken Takeuchi*, Yousuke Ishida, Kenta Kasuya, Ryosuke Tai, Hideki Koyanaka, Koichi Ui, and Nobuyuki Koura
Electrochemistry   75(10) 786-790   Oct 2007   [Refereed]
Improvement of Electrochemical Characteristics of Natural Graphite Negative Electrode Coated with Polyacrylic Acid in Pure Propylene Carbonate Electrolyte "jointly worked"
Koichi Ui, Shinei Kikuchi; Fuminobu Mikami; Yoshihiro, Kadoma, and Naoaki Kumagai*
J. Power Sources   173(1) 518-521   Nov 2007   [Refereed]
In order to improve the negative electrode characteristics of a graphite electrode in a propylene carbonate (PC)-containing electrolyte, we have prepared a graphite negative electrode coated with a water-soluble anionic polymer as a binder for com...
Electrodeposition of Crack-Free Amorphous Zn-Ni Alloy from Ethylene Glycol Mixed ZnCl2-NiCl2-EMIC Ambient-Temperature Molten Salt Bath "jointly worked"
Nobuyuki KOURA*, Naoko KAMIURA, Ken TAKEUCHI, Koichi UI, and Takashi YAMAZAKI
Journal of The Surface Finishing Society of Japan   58(11) 682-688   Nov 2007   [Refereed]
Synthesis of Hollandite-type LixMnO2 by Li+ ion-exchange in molten salt and lithium insertion characteristics "jointly worked"
Yoshihiro Kadoma, Satoru Oshitari, Koichi Ui, and Naoaki Kumagai*
Electrochim. Acta.   53(4) 1697-1702   Dec 2007   [Refereed]
Structural and Electrochemical Properties of Li+ Ion-exchanged Hollandite-type MnO2 for Lithium-ion Batteries "jointly worked"
Yoshihiro Kadoma, Naoaki Kumagai*, Satoru Oshitari, and Koichi Ui
ITE Letters on Batteries, New Technologies & Medicine   8(6) 674-678   Dec 2007   [Refereed]
Electroless Plating of Aluminum from a Room-Temperature Ionic Liquid Electrolyte "jointly worked"
Nobuyuki Koura*, Hiroshi Nagase, Atsushi Sato, Shintaro Kumakura, Ken Takeuchi, Koichi Ui, Tetsuya Tsuda, and Chun K. Loong
J. Electrochem. Soc.   155(2) D155--D157   Feb 2008   [Refereed]
Naoaki Kumagai*, Jung-Min Kim, Syo Tsuruta, Yoshihiro Kadoma, and Koichi Ui
Electrochim. Acta.   53(16) 5287-5293   Jun 2008   [Refereed]
Koichi Ui*, Keigo Yamamoto, Kohei Ishikawa, T. Minami, Ken Takeuchi, Masayuki Itagaki, Kunihiro Watanabe, and Nobuyuki Koura
J. Power Sources   183(1) 347-350   Aug 2008   [Refereed]
A rechargeable lithium metal battery operating at intermediate temperatures using molten alkali bis(trifluoromethylsulfonyl)amide mixture as an electrolyte "jointly worked"
Atsushi Watarai, Keigo Kubota, Masaki Yamagata, Takuya Goto, Toshiyuki Nohira, Rika Hagiwara, Koichi Ui, Naoaki Kumagai
J. Power Sources   183 724-729   Aug 2008   [Refereed]
Characterization and electrochemical properties of Li+ ion-exchanged products of hollandite-type Ky(Mn1-xCox)O2 for rechargeable lithium battery electrodes "jointly worked"
Yoshihiro Kadoma, Satoru Oshitari, Koichi Ui, and Naoaki Kumagai*
Solid State Ionics   179 1710-1713   Sep 2008   [Refereed]
Development of the Fe-Ni Anodic Catalyst for Solid Oxide Fuel Cell Operated at Intermediate- temperature Direct Utilizing of Dimethylether Fuel "jointly worked"
Ryosuke Tai, Koichi Ui, Ken Takeuchi, Kenjiro Fujimoto, and Shigeru Ito
Electrochemistry   77(2) 149-151   Feb 2009   [Refereed]
Development of the Fe Anodic Catalyst for Solid Oxide Fuel Cell Operated at Intermediate-temperature Direct Utilizing of Dimethylether Fuel "jointly worked"
Yousuke ISHIDA, Ryosuke TAI, Koichi UI, Ken TAKEUCHI, Kenjiro FUJIMOTO, and Shigeru ITO
Electrochemistry   77(3) 225-228   Mar 2009   [Refereed]
The Fe, Ni-BCY20 and Pt catalysts were used as the anodic materials of an intermediate-temperature Solid Oxide Fuel Cell (SOFC) for direct utilization of dimethylether (DME) gas fuel. A proton conducting oxide BaCe0.8Y0.2O3-δ was used as the elect...
Koichi Ui*, Shinei Kikuchi, Yoshihiro Kadoma, Naoaki Kumagai, and Shigeru Ito
J. Power Sources   189 224-229   Apr 2009   [Refereed]
Li+ Ion-exchanged Hollandite-type MnO2 in Molten Salt at Several Temperatures and Electrochemical Properties for Lithium Battery Electrodes "jointly worked"
Yoshihiro KADOMA, Ryo KIMURA, Koichi UI, and Naoaki KUMAGAI *
Electrochemistry   77(8) 751-753   Aug 2009   [Refereed]
Electrodeposition of Nb3Sn Alloy Film from Lewis Basic NbCl5-SnCl2-EMIC Melt "jointly worked"
Koichi Ui*, Hirokazu SAKAI, Ken TAKEUCHI, Guo-ping LING, and Nobuyuki KOURA
Electrochemistry   77(9) 798-800   Sep 2009   [Refereed]
Optimization of electrochemical properties of LiFePO4/C prepared by an aqueous solution method using sucrose "jointly worked"
Yoshihiro Kadoma, Jung-Min Kim, Katsutoshi Abiko, Keitaro Ohtsuki, Koichi Ui, and Naoaki Kumagai*
Electrochim. Acta.   55(3) 1034-1041   Jan 2010   [Refereed]
Spray-drying Synthesized Lithium-excess Li4+xTi5−xO12−δ and its Electrochemical Property as Negative Electrode Material for Li-ion Batteries "jointly worked"
Yoshihiro Kadoma, Jung-Min Kim, Koichi Ui, Naoaki Kumagai*, Naoto Kitamura, and Yasushi Idemoto
Electrochim. Acta.   55(6) 1872-1879   Feb 2010   [Refereed]
Synthesis and Electrochemical Properties of LiNi0.5-xMn1.5-xM2xO4 (M =Al, Cr) Cathode Materials Prepared by PVA Method "jointly worked"
Yoshihiro KADOMA, Seiyu SATO, Koichi UI, and Naoaki KUMAGAI*
Electrochemistry   78(8) 658-661   Aug 2010   [Refereed]
Spray-Drying Synthesized Lithium-excess Li4+xTi4.95-xNb0.05O12-δ and its Electrochemical Property as Negative Electrode Material for Li-ion Batteries "jointly worked"
Naoaki KUMAGAI*, Daisuke YOSHIKAWA, Yoshihiro KADOMA, and Koichi UI
Electrochemistry   78(9) 754-756   Sep 2010   [Refereed]
Koichi Ui*, Jun Towada, Sho Agatsuma, Naoaki Kumagai, Keigo Yamamoto, Hiroshi Haruyama, Ken Takeuchi, and Nobuyuki Koura
J. Power Sources   196(8) 3900-3905   Apr 2011   [Refereed]
Koichi Ui*, Shinei Kikuchi, Yasuhiro Jimba, and Naoaki Kumagai
J. Power Sources   196(8) 3916-3920   Apr 2011   [Refereed]
Preparation of Ni-Sn alloy film as negative electrode for lithium secondary batteries by pulse electrolysis "jointly worked"
Koichi UI*, Kiwamu KAWARAI, Yoshinobu SATO, Shinei Kikuchi, Naoaki KUMAGAI
Journal of The Surface Finishing Society of Japan   63(3) 188-190   Mar 2012   [Refereed]
Yoshihiro Kadoma, Tatsuya Akahira, Tsubasa Fukuda, Koichi Ui, and Naoaki Kumagai
Functional Materials Letters   5(1) 1250004X   Apr 2012   [Refereed]
Daisuke Yoshikawa, Norio Suzuki, Yoshihiro Kadoma, Koichi Ui, and Naoaki Kumagai
Functional Materials Letters   5(1) 12500014   Apr 2012   [Refereed]
Koichi Ui*, Soshi Kawamura, and Naoaki Kumagai
Electrochim. Acta.   76 383-388   Aug 2012   [Refereed]
Influence of the Carbon Source on the Surface and Electrochemical Characteristics of Lithium Excess Li4.3Ti5O12 Carbon Composite "jointly worked"
Yoshihiro KADOMA, Yusuke CHIBA, Daisuke YOSHIKAWA, Yuko MITOBE, Naoaki KUMAGAI, and Koichi UI*
Electrochemistry   80(10) 759-761   Oct 2012   [Refereed]
We have investigated the preparation and electrochemical characteristics of a lithium excess Li4.3Ti5O12 carbon composite (Li4.3Ti5O12/C) with different carbon sources (polyacryl acid, polyvinyl alcohol, and carboxy methyl cellulose sodium). We ha...
Guichang Liu*, Xiaoxiao Shen, Koichi Ui, Lida Wang, and Naoaki Kumagai
J. Power Sources   217 108-113   Nov 2012   [Refereed]
Jun TOWADA, Yoshihiro KADOMA, Kazuaki SHIMADA, Naoaki KUMAGAI, and Koichi UI *
Electrochemistry   81(6) 432-439   Jun 2013   [Refereed]
Influence on charge-discharge characteristics of composition of Ni-Sn alloy film negative electrode for lithium secondary batteries prepared by pulse electrolysis"jointly worked"
Koichi UI*, Kiwamu KAWARAI, Yoshihiro KADOMA, Naoaki KUMAGAI
Journal of The Surface Finishing Society of Japan   64(8) 460-466   Aug 2013   [Refereed]
Koichi Ui*, Daisuke Fujii, Yuki Niwata, Tomohiro Karouji, Yu Shibata, Yoshihiro Kadoma, Kazuaki Shimada, and Naoaki Kumagai
J. Power Sources   247 981-990   Feb 2014   [Refereed]
We analyzed the solid electrolyte interface (SEI) formation reaction and surface deposit of a natural graphite (NG-3) electrode employing polyacrylic acid (PAA) as a binder in an ethylene carbonate-based electrolyte because it was reported that th...
Yoshihiro KADOMA,* Koichi HARATA, Hisashi WATANABE, Naoaki KUMAGAI, and Koichi UI
Electrochemistry   82(6) 456-461   Jun 2014   [Refereed]
The olivine-type LiMnPO4 was synthesized from LiH2PO4 and Mn(CH3COO)2·4H2O by a solvothermal method at several heating temperatures for 90–180°C. The XRD and SEM results indicated that the obtained LiMnPO4 samples consisted of a single phase with ...
Jun Towada, Tomohiro Karouji, Hiroki Sato, Yoshihiro Kadoma, Kazuaki Shimada, Koichi Ui*
J. Power Sources   275 50-54   Feb 2015   [Refereed]
We investigated the electrochemical characteristics of a natural graphite electrode in room-temperature ionic liquids not containing additives. N, N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethylsulfonyl)amide (DEME-TFSA) containi...
Tetsuya Tsuda*, Tsukasa Kanetsuku, Teruki Sano, Yoshifumi Oshima, Koichi Ui, Masaki Yamagata, Masashi Ishikawa, Susumu Kuwabata
Microscopy   64(3) 1-10   Jun 2015   [Refereed]
By exploiting characteristics such as negligible vapour pressure and ion-conductive nature of an ionic liquid (IL), we established an in situ scanning electron microscope(SEM) method to observe the electrode reaction in the IL-based Li-ion seconda...
Possibility of hot-dipped aluminum-coated steel sheet as current collector for lithium-ion secondary batteries"jointly worked"
Setsuko KOURA, Takao TSUJIMURA, Satoru SASAKI, Takahiro ABE, Yuya TADA, Yoshinori KUDO, Ryohei SAITOU, Michimasa UCHIDATE, Yoshihiro KADOMA, and Koichi UI*
Journal of The Surface Finishing Society of Japan   67(6) 316-321   Jun 2016   [Refereed]
For conventional organic electrolytes used in lithium-ion secondary batteries, we evaluated the electrochemical characteristics of hot-dipped aluminum (including 9 mass% silicon)-coated steel sheet, after rolling, as a current collector. Cyclic vo...
In situ Scanning Electron Microscopy of Silicon Anode Reactions in Lithium-Ion Batteries during Charge/Discharge Processes "jointly worked"
Chih-Yao Chen, Teruki Sano, Tetsuya Tsuda*, Koichi Ui, Yoshifumi Oshima, Masaki Yamagata, Masashi Ishikawa, Masakazu Haruta, Takayuki Doi, Minoru Inaba, and Susumu Kuwabata
Scientific Reports   6 36153   Oct 2016   [Refereed]
XAFS Analysis of Voltage Depression Mechanism after Charge-Discharge Cycling Tests for Li-rich Cathode Materials "jointly worked"
Yuki Takei, Takahiro Endo, Akari Matsutomo, Hisashi Watanabe, Yoshihiro Kadoma, and Koichi Ui
SPring-8/SACLA Research Report   6(2) 270-276   Aug 2018   [Refereed]
Fumihiro MIHARA, Yuta SHUSEKI, Sanae TAMURA, Koichi UI, Kenta KIKUCHI, Atsuo YASUMORI, Shinichi KOMABA, Mika FUKUNISHI, Yasuo KOGO, Yasushi IDEMOTO, Ken TAKEUCHI
Journal of the Ceramic Society of Japan   127(2) 111-116   Feb 2019   [Refereed]
It is important to efficiently remove radioactive substances contained in polluted waters before they are discharged from nuclear power plants. In particular, there is an urgent need for the development of technology that can adsorb radioactive Sr...
K+ -β- ferrite as a new cathode active material for lithium secondary battery "jointly worked"
S. Ito*, K. Ui, N. Hoshi, H. Kurosawa, N. Koura, and K. Akashi
J. Phys. IV France7   7(C1) 161-162   May 1997   [Refereed]
Preparation and cycle performance of Sn-SnOx/C composite electrode for lithium-ion battery "jointly worked"
Ren, H.-J., Liu, W., Liu, G.-C., Ui, K., and Kumagai, N.
Journal of Functional Materials   42(1) 19-22   Feb 2011   [Refereed]

Misc

 
Development of new production processes for aluminum
69(1) 15-21   Jan 2019   [Refereed]
Chemical battery and physical bettery
Koichi Ui
Journal of The Surface Finishing Society of Japan   50(9) 809-811   Sep 1999
Research and Development Trend of Secondary Battery with Ambient Temperature Molten Salt Electrolyte
KoichiUi, Takuto Minami, Kohei Ishikawa, and Nobuyuki Koura
Hyomen   41(11) 375-393   Nov 2003
Preparation of Highly Functional Material Films by Electrophoretic Deposition Method
Nobuyuki Koura, KoichiUi, Shin-ya Funo, and Hideyuki Negishi
Hyomen   42(1) 20-31   Jan 2004
Molten SaltsBasis of ambient temperature molten salt and its application to the electrolytes for electrodeposition and battery
Nobuyuki Koura, Koichi Ui
Molten Salts   47(2) 55-71   May 2004
Consideration about the Definition of Molten Salt and Ionic Liquid
Koichi Ui, Mikito Ueda, Rika Hagiwara, and Minoru Mizuhata
Molten Salts   47(3) 114-123   Oct 2004
TiO2粒子分散めっき膜の作製とその光触媒活性
Fumio Yamaguchi, Tomohiro Fujita, Koichi Ui, and Nobuyuki Koura
229 1-6   Sep 2004
Application of electrophoretic deposition method to fabrication process of binder-free electrode for lithium ion secondary batteries
Koichi Ui and Nobuyuki Koura
18(10) 17-24   Sep 2005
Impedance method(1)
Takashi Amemiya, Koichi Ui and Ken Takeuchi
Electrochemistry   74(4) 351-357   Apr 2006
Relationship between Structure of Molten Carbonates and Corrosion Behavior of Metal in the Melts
Ken Takeuchi, Koichi Ui, and Nobuyuki Koura
Molten Salts   49(2) 87-92   Jun 2006
Development of Secondary Battery with Ambient-Temperature Molten Salt Electrolyte "jointly worked"
Nobuyuki Koura and Koichi Ui
FB Technical News   62 1-9   Dec 2006
Fabrication and Application of Carbon Material Films by Electrophoretic Deposition Method "jointly worked"
Koichi Ui and Nobuyuki Koura
J. Jpn. Soc. Powder Powder Metallurgy   55(1) 35-43   Jan 2008
Development of Lithium Secondary Batteries with Room-Temperature Ionic Liquid Electrolyte "jointly worked"
Koichi Ui
Chemical Engineering   53(12) 903-909   Dec 2008
Development of Natural Graphite Negative Electrode for Li-Ion Secondary Batteries using Polyacrylic Acid "jointly worked"
Koichi UI, Daisuke FUJII, and Naoaki KUMAGAI
Chemical Engineering   54(6) 445-449   Jun 2009
Improvement of Electrode Characteristics of Natural Graphite Negative Electrode for Li-Ion Secondary Batteries using Polyacrylic Acid as a Binder "jointly worked"
Koichi UI, Daisuke FUJII, and Naoaki KUMAGAI
Function & Materials   29(8) 70-71   Jul 2009
Aluminum and Aluminum Alloy Electrodeposition in Low-Temperature Molten Salt and Room-Temperature Ionic Liquid
Mikito UEDA and Koichi UI
Journal of The Surface Finishing Society of Japan   60(8) 491-496   Aug 2009
Synthesis and electrode property Li-excess Li4+xTi5-xO12 system prepared by spray-drying method
Naoaki KUMAGAI, Daisuke YOSHIKAWA, Yoshihiro KADOMA, and Koichi UI
Battery Technology   23 12-20   Dec 2011
Development of materials for nonflammable lithium batteries
Koichi UI and Yoshihiro KADOMA
MATERIAL STAGE   12(7) 47-52   Jul 2012
Fabrication of SnO2 nanoparticle negative electrode for lithium secondary batteries by electrophoretic deposition method "jointly worked"
Koichi UI, Soshi KAWAMURA, and Minoru MIZUHATA
Chemical Engineering   57(8) 598-605   Aug 2012
Chemical battery and physical bettery
Koichi Ui
Journal of The Surface Finishing Society of Japan   67(9) 502-502   Sep 2016
Koichi Ui
Electrochemistry   86(Winter) 342-345   Dec 2018
Development of Nonflammable Lithium Secondary Battery with Ambient Temperature Molten Salt Electrolyte: Performances of Positive Electrode "jointly worked"
K. Ui*, K. Ishikawa, Y. Idemoto, and N. Koura
Molten Salts XIV   14(0) 19-25   Oct 2004
The Structure of Molten Lithium Carbonate calculated by DFT and MD Simulations "jointly worked"
Hideaki Ohata, Ken Takeuchi, Koichi Ui, and Nobuyuki Koura
ECS Trans.   6(14) 57-65   May 2007
Development of Solid Oxide Fuel Cell Operated at Intermediate Temperature for Direct Utilization of Dimethylether Fuel - Investigation of Anode Catalysts "jointly worked"
Ken Takeuchi, Yousuke Ishida, Ryousuke Tai, Koichi Ui, Nobuyuki Koura, and Hideki Koyanaka
ECS Trans.   7(1) 1741-1743   Jun 2007
Electrodeposition of Nb3Sn Alloy Film from Basic NbCl5-SnCl2-EMIC Ambient-temperature Molten Salt Melt "jointly worked"
Koichi Ui, Hirokazu Sakai, Ken Takeuchi, Guo-ping Ling, Nobuyuki Koura
Proceedings of 2008 Joint Symposium on Molten Salts   532-537   Oct 2008
Direct-DME SOFC for Intermediate Operation Temperature Using Proton Conductor as the Electrolyte "jointly worked"
Ken Takeuchi, Ryosuke Tai, Koichi Ui, Kenjiro Fujimoto, Shigeru Ito, Hideki Koyanaka, and Nobuyuki Koura
ECS Trans.   35(1) 2755-2759   May 2011
Electrochemical characteristics of the graphite electrodes in Phosphonium Type Ionic Liquid Electrolyte "jointly worked"
Koichi Ui, Jun Towada, Hitoshi Hirose, Yoshihiro Kadoma, and Naoaki Kumagai, Toru Ishida, and Kimitaka Okubo
Proceedings of 9th International Symposium on Molten Salt Chemistry and Technology   258-263   Jun 2011
Koichi Ui*, Tomohiro Karouji, Jun Towada, Kazuaki Shimada, Tetsuya Tsuda, and Yoshihiro Kadoma
ECS Trans.   62(1) 273-280   Dec 2014
Electrochemical Characteristics of Natural Graphite Electrode in TFSA-based Room-temperature Ionic Liquids "jointly worked"
Koichi Ui*, Hiroki Sato, Tomohiro Karouji, Jun Towada, Yoshihiro Kadoma, Tetsuya Tsuda, Tatsuya Takeguchi
Proceedings of MS10 & AMS5   231-235   Jun 2015
N. Matsuhashi, T. Takeguchi*, M. Kojima, and K. Ui
ECS Trans.   75(22) 77-84   Oct 2016
S. Sakamoto, T. Takeguchi*, M. Kojima, and K. Ui
ECS Trans.   75(22) 67-73   Oct 2016
T. Takeguchi*, B. Sirinutsomboon, T. Wongsawa, and K. Ui
ECS Trans.   77(11) 1375-1382   May 2017

Books etc

 
エレクトロニクス用カーボン技術大全集
Aug 2004   
Ionic Liquid II - Marvelous Developments and Colorful Near Future-
Mar 2006   
2008 最新電池技術大全
Apr 2008   
Li二次電池電極材料のスラリー調整
Dec 2009   
リチウム二次電池部材 写真集
Jan 2011   

Conference Activities & Talks

 
Al/Polyaniline Primary Cell with a BPC Ambient Temperature Molten Salt Electrolyte
Nobuyuki Koura, Koichi Ui, and Shigeru Ito
Positive Electrode Active Material of Lithium Secondary batteries with an Ambient Temperature Molten Salt Electrolyte
Koichi Ui, Nobuyuki Koura, Kazuyuki Takeishi, and Yasushi Idemoto
Crystalline V2O5 as a Positive Electrode Active Material for Lithium Secondary batteries with an Ambient Temperature Molten Salt Electrolyte
Koichi Ui, Nobuyuki Koura, and Yasushi Idemoto
Electrode Characteristics of Crystalline V2O5 as a Positive Electrode Active Material for Lithium Secondary battery with an Ambient Temperature Molten Salt Electrolyte
Koichi Ui, Nobuyuki Koura, and Yasushi Idemoto
V2O5 Positive Electrode for Secondary Lithium battery with an Ambient Temperature Molten Salt Electrolyte - Studies on the electrode composition
Koichi Ui, Nobuyuki Koura, and Yasushi Idemoto

Patents

 
特開平10-97869 : ロッキングチェアタイプのリチウム二次電池用不燃性電解液およびその作製法
Nobuyuki Koura, Koichi Ui, and Yasushi Idemoto
特開平11-339866 : 光電変換素子及び色素増感型太陽電池
特開平11-340486 : pn接合及び反応生成物の形成方法
特開2000-309869 : TITANIUM OXIDE FILM AND PRODUCTION APPARATUS OF TITANIUM OXIDE FIUM
Koichi UI, Satoshi OKAMOTO, and Toru NUNOI
特開2002-42786 : 非水電解質二次電池
Koichi Ui, Masako Matsuda, and Kazuo Yamada