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Associate Professor

Laboratory location

Sugimoto Campus

Mail Address

E-mail address

Research Career 【 display / non-display

  • Solid state chemistry and electrochemistry of lithium transition metal oxides


    Keyword in research subject:  Lithium-ion batteries, Lithium insertion materials

Association Memberships 【 display / non-display

  • Electrochemical Society

  • The Ceramic Society of Japan

  • The Chemical Society of Japan

  • Electrochemical Society of Japan

Current Career 【 display / non-display

  • Osaka City University   Graduate School of Engineering   Applied Chemistry and Bioengineering Course   Associate Professor  

Graduate School 【 display / non-display

  • 2001.04

    Osaka City University  Graduate School, Division of Engineering 

Graduating School 【 display / non-display

  • 1994.04

    Osaka City University   Faculty of Engineering  


Published Papers 【 display / non-display

  • Improvement of float charge durability for LiCoO2 electrodes under high voltage and storage temperature by suppressing O1-Phase transition

    Hirooka Motoyuki, Sekiya Tomohito, Omomo Yoshitomo, Yamada Masayuki, Katayama Hideaki, Okumura Takefumi, Yamada Yusuke, Ariyoshi Kingo

    JOURNAL OF POWER SOURCES  463 2020.07  [Refereed]


  • Self-discharge tests to measure side-reaction currents of a Li[Li1/3Ti5/3]O-4 electrode

    Ariyoshi Kingo, Toda Takahide, Yamada Yusuke



  • Reaction Mechanism and Kinetic Analysis of the Solid-State Reaction to Synthesize Single-Phase Li2Co2O4 Spinel

    Ariyoshi Kingo, Yuzawa Kazuki, Yamada Yusuke

    JOURNAL OF PHYSICAL CHEMISTRY C  124 ( 15 ) 8170 - 8177 2020.04  [Refereed]


  • Examining the Long-Term Cyclabilities of Li[Ni1/2Mn3/2]O-4 and Li[Li0.1Al0.1Mn1.8]O-4 Using a Full-Cell Configuration Including LTO-Counter Electrodes with Extra Capacity

    Ariyoshi Kingo, Eguchi Makoto, Hirooka Motoyuki

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY  167 ( 6 )  2020.04  [Refereed]


  • Mechanism of Mg extraction from MgMn2O4 during acid digestion

    Ariyoshi Kingo, Masuda Shumpei

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS  22 ( 8 ) 4677 - 4684 2020.02  [Refereed]


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Conference Activities & Talks 【 display / non-display

  • Hydrogen reduction synthesis of lithium titanium oxides as a high rate electrode without conductive additive

    Kingo Ariyoshi, Takaya Ino, Yusuke Yamada

    第59回電池討論会  2018.11 

  • Voltage Hysteresis in Li-Rich Materials Examined by Backstitch Charge-Discharge Methods

    K. Ariyoshi, T. Inoue, and Y. Yamada

    58th Battery Symposium in Japan  2017.11 

  • Effect of electronic conductivity of lithium titanium oxide electrodes on polarization behavior

    Takaya Ino, Masumi Tanimoto, Yusuke Yamada, and Kingo Ariyoshi


  • The measurements of side reaction current of lithium insertion electrodes for analyzing the mass balance in lithium-ion cells

    Yuki Fukunishi, Yusuke Yamada, and Kingo Ariyoshi


  • The crystal structures and electrochemical behavior of Li-rich materials of LiCoO2-Li2MnO3

    Takayuki Inoue, Yusuke Yamada, and Kingo Ariyoshi


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Grant-in-Aid for Scientific Research 【 display / non-display

  • Electrode Potentials of Lithium Insertion Materials

    Project/Area Number : 15K06491  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :


     View Summary

    Lithium insertion materials are electrode materials in lithium-ion batteries, which have been widely used as power sources for portable electronic devices. Objective of this research is to find structural and electronic factors affecting electrode potentials of solid-state redox reactions in the materials. Theoretical and experimental approaches revealed that electrode potentials of lithium insertion materials depends on transition metal ions as a solid-state redox couple rather than crystal structure.

  • Polarization measurements of lithium insertion materials for advanced lithium-ion batteries

    Project/Area Number : 20750154  Grant-in-Aid for Young Scientists(B) Representative

    Project Year :


     View Summary

    Polarization behavior of lithium insertion materials for advanced lithium-ion batteries are examined. Steady-state polarization measurements revealed that polarization behavior of lithium insertion electrodes consists of resistance polarization only, i.e., linear relation between applied voltage and observed current. From the results obtained by polarization measurements of lithium insertion materials, one can estimate input- and output power for lithium-ion batteries. Steady-state polarization measurements also indicate that highly-crystallized materials shows superior property to the poorly-crystallized samples.