| 摘要 |
<p>A carbonaceous material which is a graphite powder having a specific surface area of 3 m2/g or smaller, an aspect ratio of 6 or lower, and a tap density of 0.8 g/cm3 or higher, or having a tap density of 0.8 g/cm3 or higher and an oxidation initiation temperature of 600 °C or higher, or having a bulk density of 0.8 g/cm3 or higher, a specific surface area of 3 m2/g or smaller, and an electrical resistivity in a specific powdery state of 0.06 Φcm or lower; and a cell containing it as a negative electrode material. The cell has a large discharge capacity, excellent suitability for charge/discharge cycles, and a high charge/discharge efficiency.</p> |
