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  1. No Access

    Article

    α-Fe2O3 and Fe3O4 hollow nanospheres as high-capacity anode materials for rechargeable Li-ion batteries

    α-Fe2O3 and Fe3O4 hollow nanospheres of size 30 ± 2 nm were synthesized by using polymeric micelles as a soft template for the first time. The hollow nanospheres were thoroughly characterized by transmission elec...

    Manickam Sasidharan, Nanda Gunawardhana, Masaki Yoshio, Kenichi Nakashima in Ionics (2013)

  2. No Access

    Article

    Preparation and electrochemical properties of Li1.1Mn2O3.9F0.1 material for lithium secondary battery

    Li1.1Mn2O4 and Li1.1Mn2O3.9F0.1 materials have been synthesized at 900 ‡C by using the melt-impregnation method. Li1.1Mn2O4 showed fairly large capacity fading at room temperature; however, Li1.1Mn2O3.9F0.1 exhib...

    Yun-Sung Lee, Sung-Jun Cho, Masaki Yoshio in Korean Journal of Chemical Engineering (2006)

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    Article

    Valence Determination of Manganese in Battery Cathode Materials by High-Resolution Mn Kα1 Spectra

    High-resolution the Mn Kα1 X-ray fluorescence spectra (HRXRF) were measured for a variety of manganese compounds, the oxidation number (valence) of which was from II to VII. Plots of the valence against the full ...

    Tokuzo Konishi, Toshio Tsubata, Masaoki Oku, Yanko M. Todorov… in Analytical Sciences (2005)

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    Article

    The Effects of Lithium and Oxygen Contents Inducing Capacity Loss of the LiMn2O4 Obtained at High Synthetic Temperature

    Well-crystallized LiMn2O4 has been synthesized at different calcination temperatures using the melt-impregnation method. The lattice constant of LiMn2O4 increased with increasing calcination temperatures. Li/LiMn

    Yun Sung Lee, Yasufumi Hideshima, Yang Kook Sun… in Journal of Electroceramics (2002)

  5. No Access

    Article

    The effects of oxygen flow rate and anion do** on the performance of the LiNio2 electrode for lithium secondary batteries

    This work presents the effects of O2 flow rate and S-do** on structural and electrochemical properties of LiNiO2. Layered LiNiO2 were prepared using a sol-gel method. It was found that oxygen plays an important...

    Sang Ho Park, Ki Soo Park, Myung Hun Cho… in Korean Journal of Chemical Engineering (2002)

  6. No Access

    Article

    Dependence of Battery Performance of Spinel Li1+XMn2O4 on the Preparation Method

    The formation process of the spinel phase by the melt-impregnation method was extensively investigated by the pore volume distribution measurement. Two kinds of the spinel structure compounds Li1+xMn2O4 optimized...

    Masaki Yoshio, Yongyao **a, Kazutaka Ikeda… in MRS Online Proceedings Library (1995)

  7. No Access

    Article

    Stability Constants of Crown Ether Complexes with Aqueous Hydronium Ion

    Stability constants of complexes of hydronium ion with three crown ethers were determined by a solvent extraction method. By thermodynamic experiments on these complexes in 0.5 mol dm-3 hydrochloric acid at 25.0°...

    Abaji G. Gaikwad, Hideyuki Noguchi, Masaki Yoshio in Analytical Sciences (1987)

  8. No Access

    Article

    High-rate plating of aluminium from the bath containing aluminium chloride and lithium aluminium hydride in tetrahydrofuran

    An electrolyte for the high-rate plating of aluminium from the tetrahydrofuran solutions of aluminium chloride and lithium aluminium hydride has been developed. A smooth and coherent deposit of aluminium has b...

    Masaki Yoshio, Nobuhiko Ishibashi in Journal of Applied Electrochemistry (1973)