| 摘要 |
PURPOSE:To form a negative electrode of a high capacity and a high density by adding a small amount of carbon material, dispersing the materials in a high speed air flow, and giving a mechanical and thermal energy to them so as to fix a fiber-form or a powder carbon on a cadmium oxide active substance. CONSTITUTION:A carbon material is fixed to a cadmium active substance by a shock process in a high speed air flow. For example, an acetylene black of the mean particle diameter about 0.1mum and a cadmium oxide powder of the mean particle diameter about 1mum are put in a container at the wt. ratio 1:99, and rotated. Both the materials are mixed evenly by the movement of particles and a weak shearing force by the rotation of stirring blades. The mixed particles are dispersed in a high speed air flow, and a mechanical and a thermal energy mainly of shock actions is given to them. As a result, the acetylene black being a fiber form or a powder carbon is fixed to the cadmium oxide making an extremely even dispersion condition, the conductibility is improved even though a small amount of carbon material is added, and a high capacity and a high density of negative electrode can be formed. |
