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Associate Professor

Laboratory location

Sugimoto Campus

Mail Address

E-mail address

Research Areas 【 display / non-display

Structural/Functional materials

Research subject summary 【 display / non-display

  • Lithium-ion battery

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

  • Correlation between capacity loss and increase in polarization in 5 V lithium-insertion material of Li[Ni1/2Mn3/2]O-4

    Ariyoshi Kingo, Eguchi Makoto, Hirooka Motoyuki

    SOLID STATE IONICS  371 2021.11  [Refereed]


  • Synthesis and electrochemical properties of a cubic polymorph of LiNi1/2Mn1/2O2 with a spinel framework

    Ariyoshi Kingo, Kajikawa Kensuke, Yamada Yusuke



  • Clarification of particle size dependence on the rate capabilities of Li[Ni1/2Mn(3/2)]O-4 materials and electrodes by the dilute electrode method

    Ariyoshi Kingo, Sugawa Jun, Masuda Shumpei

    JOURNAL OF POWER SOURCES  509 2021.10  [Refereed]


  • Intragranular Fracture Mechanism of Highly Crystalline Lithium Manganese Oxide during Lithium Insertion/Extraction Reactions

    Ariyoshi Kingo, Ukumori Nan

    ACS APPLIED ENERGY MATERIALS  4 ( 8 ) 8142 - 8149 2021.08  [Refereed]


  • Synthesis Optimization of Electrochemically Active LiCoMnO4 for High-Voltage Lithium-Ion Batteries

    Ariyoshi Kingo, Yamamoto Hiroya, Yamada Yusuke

    ENERGY & FUELS  35 ( 16 ) 13449 - 13456 2021.08  [Refereed]


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Conference Activities & Talks 【 display / non-display

  • Differentiating the Rate Capabilities of Lithium-Nickel-Manganese Oxide, Li[Ni1/2Mn3/2]O4, Insertion Materials and Electrodes Using Diluted Electrode Methods

    Kingo Ariyoshi、Shumpei Masuda、Jun Sugawa

    PRiME2020  2020.10 

  • Determination of Diffusion Coefficient of Li+ Ions in Porous Electrodes from Rate Capability Tests

    Rikuya Suzuki、Kingo Ariyoshi

    PRiME2020  2020.10 

  • Solid-State Diffusion Coefficient of Li Ions in Li[Ni1/2Mn3/2]O4 Determined By the Diluted Electrode Method

    Jun Sugawa、Shumpei Masuda、Kingo Ariyoshi

    PRiME2020  2020.10 

  • 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 

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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.