| 摘要 |
1416742 Storage device including bipolar electrodes OMF CALIFORNIA. Inc 14 Nov 1972 [18 Nov 1971] 52619/72 Addition to 1416025 Heading H1B In an electrical storage device of the metal/ metal halide/halogen type, as described in Patent Specification 1,416,025, including at least two bipolar electrodes 13 each comprising a gas- and electrolyte-impervious wall 21 having a metal coating 21 forming the negative electrode and a porous member 25 forming the positive electrode, the wall 21 and member 25 are joined together by a conducting carbonized cement 27. The wall 21 is' preferably formed of graphite, although synthetic organic resin and rubbers, or porous carbon or graphite coated with an impervious resin are suitable. The coating 23 on the wall 21 is preferably of Zn, although Fe, Co and Ni are suitable. The porous member 25 is formed of carbon or graphite or sintered titanium or ruthenium oxide. The conductive cement 27 after applying to a thickness of 0À01-0À5 mm. is heated to 650-2500‹ C. preferably above 800‹C., to form a carbon or carbon and graphite bond between the members 21 and 25. The conductive cement may comprise pitch, tar, furfuryl alcohol or phenolic resin which may be mixed with fine carbon or' graphite at about 0À1-10 parts by weight per part of carbon or graphite. The phenolic resin may be a phenol formaldehyde, e.g. derived from phenol, akylated or halogenated phenol or bisphenols such as A- and F-. Examples of alkylated phenols are mono-, di- or tri-alkyl substituted phenols such as methyl, ethyl, propyl, butyl, t-butyl, hexyl, deeyl and dodecyl. Examples of halogenated phenols are mono-, di- or trichloro or bromo phenols. The storage device system is described generally in Specification 1,339,060. |
