Global Patent Index - EP 2235235 A2

EP 2235235 A2 20101006 - CELL FOR ELECTROLYSIS OF WATER WITH A SOLID ELECTROLYTE CONTAINING LITTLE OR NO NOBLE METALS

Title (en)

CELL FOR ELECTROLYSIS OF WATER WITH A SOLID ELECTROLYTE CONTAINING LITTLE OR NO NOBLE METALS

Title (de)

ZELLE ZUR WASSER-ELEKTROLYSE MIT EINEM FESTSTOFFELEKTROLYT MIT GERINGEM EDELMETALLANTEIL ODER OHNE EDELMETALLE

Title (fr)

CELLULE POUR ELECTROLYSE DE L'EAU AVEC ELECTROLYTE SOLIDE CONTENANT PEU OU PAS DE METAUX NOBLES

Publication

EP 2235235 A2 20101006 (FR)

Application

EP 08872254 A 20081128

Priority

  • FR 2008001660 W 20081128
  • FR 0708391 A 20071130

Abstract (en)

[origin: FR2924443A1] The cell useful in a fuel cell and a reversible electrolyzer system for the electrolysis of water, comprises a planar cationic exchange polymer membrane (1), two electrodes (2, 3) placed one another in the membrane, a first catalyst (5a) for the reduction of protons in molecular hydrogen placed between the membrane and a cathode, and a second catalyst (5b) between the membrane and the anode. The first catalyst comprises a compound containing a family of heteropolyacid, which is stable in aqueous medium, family of metal-oxime, which is stable in aqueous medium and platinum nanoparticles. The cell useful in a fuel cell and a reversible electrolyzer system for the electrolysis of water, comprises a planar cationic exchange polymer membrane (1), two electrodes (2, 3) placed one another in the membrane, a first catalyst (5a) for the reduction of protons in molecular hydrogen placed between the membrane and a cathode, and a second catalyst (5b) between the membrane and the anode. The first catalyst comprises a compound containing a family of heteropolyacid, which is stable in aqueous medium, family of metal-oxime, which is stable in aqueous medium and platinum nanoparticles. The first and/or second catalyst is directly disposed on a surface of current collector, and absorbed to a specific surface of a material that is disposed between the membrane and the current collector. The material with the specific surface has carbon powder or carbon nanotubes, titanium oxide nanoparticles under stoichiometry, and tin oxide nanoparticles. An independent claim is included for a process for the preparation of a cell for the electrolysis of water.

IPC 8 full level

C25B 9/10 (2006.01)

CPC (source: EP)

C25B 9/23 (2021.01); C25B 11/04 (2013.01)

Citation (search report)

See references of WO 2009098403A3

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

FR 2924443 A1 20090605; FR 2924443 B1 20110826; EP 2235235 A2 20101006; EP 2253743 A1 20101124; EP 2253743 B1 20130918; WO 2009098403 A2 20090813; WO 2009098403 A3 20100225

DOCDB simple family (application)

FR 0708391 A 20071130; EP 08872254 A 20081128; EP 10172519 A 20081128; FR 2008001660 W 20081128