| 摘要 |
849,986. Batteries. UNION CARBIDE CORPORATION. Oct. 9, 1958 [Oct. 9, 1957], No. 32205/58. Class 53 A dry cell comprises a steel can 2 enclosing a cathode 4 of manganese dioxide and carbon separated from the anode by a layer of paper 10. The anode consists of a porous annulus or tube 6 made of finely divided metal which when placed in the electrolyte 8 in the cell swells and assumes the form shown in Fig. 2, leaving only a central channel for free electrolyte. In this condition the metal particles of the anode attain a maximum concentration on the outer periphery of the anode. The anode is made by extrusion and may consist of amalgamated zinc particles mixed with a solution of potassium hydroxide and sodium carboxy-methyl cellulose. The electrolyte is a solution of potassium hydroxide containing zinc oxide and thickened with sodium carboxymethyl cellulose, hydroxyethyl cellulose, casein or polyvinyl acetate latex. The anode collector is a copper wire 12 which makes contact with the negative terminal 16. |
