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  1. Article

    Open Access

    Fundamental methods of electrochemical characterization of Li insertion materials for battery researchers

    Li-ion batteries have gained intensive attention as a key technology for realizing a sustainable society without dependence on fossil fuels. To further increase the versatility of Li-ion batteries, considerabl...

    Yosuke Ugata, Chihaya Motoki, Kaoru Dokko… in Journal of Solid State Electrochemistry (2024)

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  2. Article

    Open Access

    Solid–electrolyte interphase formation during Li metal deposition in LiN(SO2F)2-based solvate ionic liquids

    Solvate ionic liquids (SILs) are promising electrolytes for Li metal batteries. In this study, Li plating-strip** reactions in SILs were investigated using electrochemical quartz crystal microbalance measure...

    Ryoichi Tatara, Kohei Ikeda, Kazuhide Ueno… in Journal of Solid State Electrochemistry (2024)

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  3. No Access

    Chapter

    S8 Cathode

    In this chapter, the porous composite cathodes for Li–S batteries are overviewed. The composite sulfur cathodes are typically composed of elemental sulfur S8, carbon support, and a polymer binder. The effects of ...

    Kaoru Dokko in Next Generation Batteries (2021)

  4. No Access

    Article

    Solvate Ionic Liquids and Their Application to Lithium Batteries: Glyme-Lithium Bis(fluorosulfonyl)amide Equimolar Complexes

    The physicochemical properties of glyme-Li[FSA] (FSA: bis(fluorosulfonyl)amide) equimolar complexes were investigated. The self-diffusion coefficients of glymes and Li+ as determined by pulsed-field gradient spin...

    Kazuki Yoshida, Mizuho Tsuchiya, Naoki Tachikawa… in MRS Online Proceedings Library (2012)

  5. No Access

    Article

    Protic Ionic Liquids Based on a Super-Strong Base: Correlation between Physicochemical Properties and ΔpKa

    1,8-Diazabicyclo[5,4,0]undec-7-ene (DBU) was neutralized by a range of Bransted acids with a wide variation in the ΔpKa values of their constituent acids and base. The salts exhibited properties characteristic of...

    Muhammed Shah Miran, Hiroshi Kinoshita, Tomohiro Yasuda… in MRS Online Proceedings Library (2012)

  6. No Access

    Chapter

    Nanotechnology for Material Development on Future Energy Storage

    Various kinds of energy devices have been developed as power sources for portable electronic devices and electric vehicles. Fuel cell, rechargeable lithium ion battery, and super capacitor are the most interes...

    Kiyoshi Kanamura, Hirokazu Munakata, Kaoru Dokko in Electrochemical Nanotechnologies (2010)

  7. No Access

    Article

    Three-dimensionally ordered composite electrode between LiMn2O4 and Li1.5Al0.5Ti1.5(PO4)3

    A novel electrode system composed of three-dimensionally ordered macroporous (3DOM) Li1.5Al0.5Ti1.5(PO4)3 (LATP) and LiMn2O4 was fabricated by the colloidal crystal templating method and sol–gel process. A LATP n...

    Hiroyuki Nakano, Kaoru Dokko, Masanori Hara, Yasuhiro Isshiki, Kiyoshi Kanamura in Ionics (2008)

  8. No Access

    Article

    Hydrothermal synthesis of LiFePO4 as a cathode material for lithium batteries

    LiFePO4 (space group: Pnma) was prepared by hydrothermal method at 170 °C. LiFePO4 was prepared from precursor solutions consisting of FeSO4 · 7H2O, (NH4)2HPO4, and three kinds of Li sources. LiCl, Li(CH3COO), an...

    Kiyoshi Kanamura, Shohei Koizumi, Kaoru Dokko in Journal of Materials Science (2008)

  9. No Access

    Article

    Rapid evaluation of charge/discharge properties for lithium manganese oxide particles at elevated temperatures

    A microelectrode technique was applied to investigate the electrochemical properties of LiMn2O4 particles at elevated temperatures. Cyclic voltammograms of LiMn2O4 were measured after the particles were exposed ...

    Kaoru Dokko, Soichi Horikoshi, Takashi Itoh… in Journal of Solid State Electrochemistry (2002)

  10. No Access

    Article

    High-Speed voltammetry of Mn-doped LiCoO2 using a microelectrode technique

    The microelectrode technique was applied to investigate the electrochemical properties of LiCo1- x Mn x O2 (x=0, 0.01, 0.05, 0.2, or 0.5) synt...

    Shinichi Waki, Kaoru Dokko, Takashi Itoh… in Journal of Solid State Electrochemistry (2000)