公开(公告)号：CA1241370A

公开(公告)日：1988-08-30

申请号：CA465307

申请日：1984-10-12

Applicant: UNITED TECHNOLOGIES CORP

Inventor： TROCCIOLA JOHN C ,  POWERS JOSEPH ,  MARTIN RONALD G

IPC: H01M8/14

Abstract: Improved Silicon Carbide Matrix for Fuel Cells A matrix for holding the electrolyte within a phosphoric acid fuel cell is made from silicon carbide and a binder of polyethersulfone. Preferably the matrix consists of 10-20 weight percent polyethersulfone with a balance of silicon carbide. The matrix has improved strength, wettability and bubble pressure compared to the best known prior art matrix.

公开(公告)号：CA1215197A

公开(公告)日：1986-12-09

申请号：CA396499

申请日：1982-02-17

Applicant: UNITED TECHNOLOGIES CORP

Inventor： POWERS JOSEPH ,  TROCCIOLA JOHN C ,  MARTIN RONALD G

IPC: H01M2/02 ,  C08L1/00 ,  C08L27/00 ,  C08L27/12 ,  C09K3/10 ,  H01M8/02 ,  H01M8/24 ,  C08F114/26 ,  H01M2/08

Abstract: High Temperature, High Pressure Chemical Resistant Seal Material A seal material especially adapted for phosphoric acid fuel cell stack sealing is described comprising an unfilled, unoiled high molecular weight polytetrafluoroethylene. Although the seal material is especially adapted as the regular seal around the plenums separating the oxygen and hydrogen gas inlets and outlets, it can also be used as a plenum or stack crack sealer, The material provides seal integrity and stability at temperatures in excess of 400.degree.F (204.degree.C), e.g. 400.degree.F to 450.degree.F (204.degree.C to 232.degree.C), in a corrosive chemical environment at differential pressures above 50 psi (e.g. 50 psi to 80 psi). It can be used in electrochemical cells in general where high temperature, high pressure, corrosive environments prevail.