| 摘要 |
A battery material which has following constitution: a single-layer carbon nanotube having a small diameter is placed into a single-layer carbon nanotube having a large diameter such that the nanotubes are isolated from each other, a boron nitride nanotube is used as an insulating layer, and the carbon nanotubes and the boron nitride nanotube have a common tube axis; and this material is reduced in mass with respect to a charging capacity, improved in power supply, and free from deterioration.
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