| 摘要 |
[Problem] To provide a negative electrode for a lithium-ion secondary cell, the negative electrode being configured in a novel manner, having a charge-discharge capacity, as determined per unit weight of the carbon used in the electrode, that is markedly higher than the theoretical capacity of graphite, and having a surface that is stabilized against repeated charging and discharging; and to provide a lithium-ion secondary cell in which the electrode is used, the cell having an extremely high charge-discharge capacity. [Solution] A negative electrode for a lithium-ion secondary cell in which a carbon layer obtained by building up and growing a graphene sheet is formed on the surface of a substrate comprising an iron-based metal, the carbon layer being formed in a diagonal direction in relation to the substrate, and the carbon layer being used as the surface of the negative electrode. As measured using an argon laser having a wavelength of 532 nm, the Raman spectrum of the graphite that constitutes the carbon nanochip layer has a g/d ratio of 0.30-0.80. |
