| 摘要 |
PURPOSE: To manufacture a thin sheet of an active material having an uniform thickness at low cost by forming a niobium power layer on a base, reacting the niobium powder with selenium vapor or sulfur vapor to generate a niobium chalcogenide active material. CONSTITUTION: Niobium powder is accumulated on a base by use of a slurry. As an example, the slurry contains about 50wt.% of niobium powder, and the particle size is set to about 325 mesh or lower. The slurry is stirred in accumulation in order to ensure the uniformity, and a liquid is removed by the heating from the slurry. After drying, the niobium powder is reacted with selenium by being heated generally within a temperature range of 625-780 deg.C. After the reaction, a sheet of NbSe3 is removed from the inert base, wound on a metal mesh as occasion demands, and formed for the use to a cylindrical lithium cell. |
