公开(公告)号：US3615841A

公开(公告)日：1971-10-26

申请号：US3615841D

申请日：1968-07-31

Applicant: LEESONA CORP

Inventor： SMITH STANLEY W ,  THIERY EDWARD I ,  GINER JOSE D

IPC: H01M4/88 ,  H01M27/00 ,  H01M13/00

CPC classification number: H01M4/8885 ,  H01M4/8663 ,  H01M4/8803 ,  H01M4/8828 ,  H01M4/8875 ,  H01M4/8896 ,  H01M4/90 ,  H01M4/92 ,  H01M8/0232 ,  Y10T29/49108

Abstract: A method of forming lightweight electrodes is described comprising forming an admixture of electrochemically active metal and hydrophobic polymer in a fluid medium, applying said admixture to a porous metal support, lightly pressing the admixture into and around the metal support and thereafter heating in the absence of applied pressure at a temperature sufficient to bond said polymer particles to each other and to said support.

公开(公告)号：US3444004A

公开(公告)日：1969-05-13

申请号：US3444004D

申请日：1965-09-30

Applicant: LEESONA CORP

Inventor： SMITH STANLEY W

IPC: H01M4/88 ,  H01M27/10

CPC classification number: H01M4/8807 ,  H01M4/8821 ,  H01M4/8828

Abstract: 1,159,345. Fuel cell electrodes. LEESONA CORP. 23 Sept., 1966 [30 Sept., 1965], No. 42466/66. Heading H1B. A fuel cell electrode comprises a porous metal support having its internal voids sealed with a thin film of a hydrophobic polymer and carrying on at least one surface a catalytic layer which is a uniform mixture of an electrochemically activating metal and a hydrophobic polymer which has been sintered. The metal support may be e.g. a screen, expanded metal, felt or mesh of 0À1-0À4 mm. thickness, and mesh size 50-100, made of, e.g. Ni, Ta, Ti, Cu, Zn, Fe, Ag, Au, Pd, Pt, Os or alloys thereof. The catalytic layer may comprise Cu, Ag, Au, Ni, Co, Pt, Ru, Pd, Os, Ir or Rh or alloys thereof disposed with P.T.F.E., polystyrene, polyethylene, poly (mono-, di- or tri-fluoroethylene), or poly-(trifluorochloroethylene), in ratios of 90-55 wt. per cent metal to 10-45 wt. per cent polymer. In examples a 100 mesh Ni screen or a 50 mesh Ta screen is dipped in an aqueous dispersion of P.T.F.E. and dried, then coated by spraying on both sides with an aqueous dispersion of P.T.F.E. and Pt black.