公开(公告)号：CA2862291C

公开(公告)日：2017-09-05

申请号：CA2862291

申请日：2012-01-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PROTSAILO LESIA V ,  STOLAR LAURA ROEN ,  MARZULLO JESSE M ,  GUMMALLA MALLIKA ,  BURLATSKY SERGEI F

IPC: H01M8/1004 ,  H01M4/92 ,  H01M4/96

Abstract: An example of a stable electrode structure is to use a gradient electrode that employs large platinum particle catalyst in the close proximity to the membrane supported on conventional carbon and small platinum particles in the section of the electrode closer to a GDL supported on a stabilized carbon. Some electrode parameters that contribute to electrode performance stability and reduced change in ECA are platinum-to-carbon ratio, size of platinum particles in various parts of the electrode, use of other stable catalysts instead of large particle size platinum (alloy, etc), depth of each gradient sublayer. Another example of a stable electrode structure is to use a mixture of platinum particle sizes on a carbon support, such as using platinum particles that may be 6 nanometers and 3 nanometers. A conductive support is typically one or more of the carbon blacks.

公开(公告)号：CA2862291A1

公开(公告)日：2013-07-25

申请号：CA2862291

申请日：2012-01-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PROTSAILO LESIA V ,  STOLAR LAURA ROEN ,  MARZULLO JESSE M ,  GUMMALLA MALLIKA ,  BURLATSKY SERGEI F

IPC: H01M4/86 ,  B01J21/18 ,  H01M4/92 ,  H01M8/02 ,  H01M8/10

Abstract: An example of a stable electrode structure is to use a gradient electrode that employs large platinum particle catalyst in the close proximity to the membrane supported on conventional carbon and small platinum particles in the section of the electrode closer to a GDL supported on a stabilized carbon. Some electrode parameters that contribute to electrode performance stability and reduced change in ECA are platinum-to-carbon ratio, size of platinum particles in various parts of the electrode, use of other stable catalysts instead of large particle size platinum (alloy, etc), depth of each gradient sublayer. Another example of a stable electrode structure is to use a mixture of platinum particle sizes on a carbon support, such as using platinum particles that may be 6 nanometers and 3 nanometers. A conductive support is typically one or more of the carbon blacks.