K
Koji Takei
Researcher at Nippon Telegraph and Telephone
Publications - 15
Citations - 968
Koji Takei is an academic researcher from Nippon Telegraph and Telephone. The author has contributed to research in topics: Lithium & Thin film. The author has an hindex of 9, co-authored 15 publications receiving 929 citations.
Papers
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Journal ArticleDOI
Reaction behavior of LiFePO4 as a cathode material for rechargeable lithium batteries
TL;DR: In this paper, the effect of cell temperature on the electrochemical reaction behavior of LiFePO4 was investigated by using cyclic voltammetry and electrochemical impedance spectroscopy (EIS).
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Characterization of LiFePO4 as the cathode material for rechargeable lithium batteries
TL;DR: In this article, the electrochemical characteristics of LiFePO 4 when used as the cathode material for rechargeable lithium batteries were investigated and the change in the crystal structure of the material during discharge.
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Lithium ion cell safety
TL;DR: In this article, the safety characteristics of commercial lithium ion cells are examined in relation to their use for cellular phones and the results of the safety tests that they performed on lithium ion cell and outlines their views regarding their safety.
Patent
Material for activating positive electrode of lithium secondary battery and the lithium secondary battery
TL;DR: In this article, the authors proposed a solution to enhance the charging and discharging capacity of a lithium secondary battery during a large-current charging/discharging, where the battery uses a low-price material of iron phosphate lithium as a positive electrode.
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Structural and Thermal Characteristics of Nickel Dioxide Derived from LiNiO2
TL;DR: In this article, structural and thermal properties of highly delithiated (lithium extracted) compounds Li x NiO 2, which can be called "nickel dioxide", were reported.