| 摘要 |
1,172,410. Forming porous battery electrodes. MALLORY BATTERY CO. OF CANADA Ltd. May 18, 1967 [May 20, 1966], No.23148/67. Heading C7X. Porous amalgam structures for use as battery anodes are made by mixing a metal powder which is amalgamable with Hg (e.g. Zn Cd Sn or Pb)a mercury compound and a water soluble compound as a filling agent which will react with any oxide layer on the metal particles, compacting the mixture (e.g. by vibration under the influence of its own weight or by compression) activating the compact (e.g. with a solvent such as water or an aqueous solution) to form the amalgam and then removing the soluble by-products by leaching with water. A polar organic substance (e.g. glycerol) may be added to the powders to assist blending. The mercury compound may be Hg 2 Cl 2 , HgCl 2 Hg (OAc) 2 , the filling agent may be NH 4 Cl, (NH 4 ) 2 SO 4 or KNO 3 and the activating solution may be NH 4 Cl ΠHCl, (NH 4 ) 2 SO 4 or KNO 3 ΠHNO 3 dissolved in water. The resultant body may be heated under vacuum to distil off the Hg to give a porous metal structure of full structural integrity. |
