公开(公告)号：CA1109518A

公开(公告)日：1981-09-22

申请号：CA312868

申请日：1978-10-06

Applicant: UNITED TECHNOLOGIES CORP

Inventor： STEWART ROBERT C JR

IPC: B05D1/30 ,  H01M2/14 ,  H01M4/88 ,  H01M8/02

Abstract: PROCESS FOR FORMING A FUEL CELL MATRIX A process for forming a fuel cell electrolyte matrix on the surface of an electrode involves passing the electrode through a vertically falling curtain or waterfall of the matrix material carried in a liquid vehicle. The coated electrode is then heat treated to remove the liquid vehicle, leaving a layer of matrix material on the electrode surface. This curtain coating process has been used to produce matrix layers of 2.5 mils having a variation in thickness of no more than 0.2 mils.

公开(公告)号：CA1075308A

公开(公告)日：1980-04-08

申请号：CA283132

申请日：1977-07-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LAMARINE JOHN H ,  STEWART ROBERT C JR ,  VINE RAYMOND W

IPC: H01M2/18 ,  H01M4/86 ,  H01M8/02 ,  H01M8/14

Abstract: ELECTROLYTE RESERVOIR FOR A FUEL CELL An electrolyte reservoir layer disposed behind and adjacent one of the catalyst layers of a fuel cell is porous and hydrophilic to the electrolyte. In one embodiment the reservoir layer includes impregnations of hydrophobic material to provide reactant gas passages through the reservoir layer to the catalyst layer, Additionally the reservoir layer includes impregnations of a material similar to the fuel cell electrolyte retaining matrix material to improve electrolyte transfer from the matrix into the reservoir. The impregnations of hydrophobic material are designed to provide good distribution of the reactant gas into the catalyst layer without consuming a large volume of the reservoir. In a preferred embodiment the reservoir is also the electrode substrate whereby the catalyst layer is bonded to the surface thereof.