公开(公告)号：EP0867048B1

公开(公告)日：2002-02-20

申请号：EP96941024.0

申请日：1996-11-26

申请人： Celanese Ventures GmbH ,  Magnet-Motor GmbH

发明人： KOSCHANY, Arthur ,  SCHWESINGER, Thomas ,  LUCAS, Christian ,  FRANK, Georg ,  DECKERS, Gregor ,  SOCZKA-GUTH, Thomas ,  BÖNSEL, Harald ,  KNAUF, Rüdiger

IPC分类号： H01M8/10 ,  H01M4/86 ,  H01M4/96 ,  H01M4/88

CPC分类号： H01M4/8807 ,  C25B9/10 ,  C25B11/035 ,  H01M4/86 ,  H01M4/8828 ,  H01M4/96 ,  H01M8/1004

公开(公告)号：EP0986600B1

公开(公告)日：2001-10-17

申请号：EP98937435.0

申请日：1998-06-02

申请人： Celanese Ventures GmbH

发明人： SOCZKA-GUTH, Thomas ,  WITTELER, Helmut ,  DECKERS, Gregor ,  FRANK, Georg ,  BREHL, Kilian ,  LENZE, Jürgen ,  BÖNSEL, Harald ,  KNAUF, Rüdiger

IPC分类号： C08J3/28 ,  C08J3/02

CPC分类号： C08J3/28 ,  C08G65/48 ,  C08G2650/40 ,  C08J2300/10 ,  H01M4/8605 ,  H01M4/92 ,  H01M8/02 ,  Y02P70/56

摘要： The invention relates to a method for producing aqueous, hydrous and non-aqueous solutions of polymers that are functionalized by acid groups. The method is characterized in that the heat needed to produce the solution is supplied by microwave radiation. These solutions can be used as a starting material for the production of gas diffusion electrodes, fuel cells and platinum nanoparticles stabilized by polymer-electrolytes.

公开(公告)号：EP1039968B1

公开(公告)日：2003-11-12

申请号：EP98965752.3

申请日：1998-12-03

申请人： Celanese Ventures GmbH

发明人： BÖNSEL, Harald ,  DECKERS, Gregor ,  FRANK, Georg ,  MILLAUER, Hans ,  SOCZKA-GUTH, Thomas

IPC分类号： B01J35/00

CPC分类号： C25C5/02 ,  B01J35/0013 ,  B82Y30/00 ,  H01M4/92 ,  H01M4/926 ,  H01M2300/0082

摘要： The invention relates to soluble nanoparticles having a diameter of 0.5 to 3 nm, preferably of 1 to 2 nm, containing the platinum alone or platinum and other metals of the platinum group. The nanoparticles are embedded in a protective colloid containing polymeric betaine which can be degraded by hydrolysis. The betaine is preferably a carbobetaine of formula -N?+R1R2-(-CH¿2-)n-CO2-, a phosphobetaine of formula -N+R1R2-(-CH2-)n-PO3- or, preferably a sulfobetaine of formula -N+R1R2-(-CH2-)n-SO3-, whereby R?1 and R2¿, independent of one another, can be the same or different, and represent alkyl radicals of 1 to 6 carbon atoms, and n represents 1, 2, or 3. In addition, the invention relates to a method for producing the nanoparticles and catalysts produced therefrom as well as to their utilization for fuel cells.

公开(公告)号：EP0867048A1

公开(公告)日：1998-09-30

申请号：EP96941024.0

申请日：1996-11-26

申请人： Hoechst Research & Technology Deutschland GmbH & Co. KG ,  Magnet-Motor Gmbh

发明人： KOSCHANY, Arthur ,  SCHWESINGER, Thomas ,  LUCAS, Christian ,  FRANK, Georg ,  DECKERS, Gregor ,  SOCZKA-GUTH, Thomas ,  BÖNSEL, Harald ,  KNAUF, Rüdiger

IPC分类号： C25B9 ,  C25B11 ,  H01M4 ,  H01M8

CPC分类号： H01M4/8807 ,  C25B9/10 ,  C25B11/035 ,  H01M4/86 ,  H01M4/8828 ,  H01M4/96 ,  H01M8/1004

摘要： A particularly inexpensive, homogeneous and porous gas diffusion electrode is produced with at least one electrically conducting water-repellent and gas-permeable gas diffusion layer containing a mechanically stable support material impregnated with at least one electrically conducting material of bulk conductivity equal too or in excess of 10 mS/cm. The gas diffusion electrode can be coated with a catalytically active layer. The claimed electrodes are especially suitable for use in fuel or electrolysis cells.