Precious metal oxide catalyst for water electrolysis

Details Precious metal oxide catalyst for water electrolysis Precious metal oxide catalyst for water electrolysis

2011-07-12

2011-07-12

Nguyen, Cam N (Department: 1736)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

C429S209000, C429S218100, C429S523000, C429S528000, C429S533000, C502S242000, C502S246000, C502S261000, C502S263000, C502S304000, C502S326000, C502S327000, C502S332000, C502S349000, C502S350000, C502S351000, C502S355000, C502S415000, C502S439000, C204S290090, C204S290130

Reexamination Certificate

active

07976989

ABSTRACT:
The invention is directed to iridium oxide based catalysts for use as anode catalysts in PEM water electrolysis. The claimed composite catalyst materials comprise iridium oxide (IrO2) and optionally ruthenium oxide (RuO2) in combination with a high surface area inorganic oxide (for example TiO2, Al2O3, ZrO2and mixtures thereof). The inorganic oxide has a BET surface area in the range of 50 to 400 m2/g, a water solubility of lower than 0.15 g/l and is present in a quantity of less than 20 wt. % based on the total weight of the catalyst. The claimed catalyst materials are characterised by a low oxygen overvoltage and long lifetime in water electrolysis. The catalysts are used in electrodes, catalyst-coated membranes and membrane-electrode-assemblies for PEM electrolyzers as well as in regenerative fuel cells (RFC), sensors, and other electrochemical devices.

REFERENCES:
patent: 3470019 (1969-09-01), Steele
patent: 3632498 (1972-01-01), Beer
patent: 3641101 (1972-02-01), Yamada et al.
patent: 3839192 (1974-10-01), Hayes
patent: 3843560 (1974-10-01), Hayes
patent: 3853739 (1974-12-01), Kolb et al.
patent: 3941716 (1976-03-01), Paynter
patent: 3950270 (1976-04-01), Paynter et al.
patent: 3969221 (1976-07-01), Mitchell et al.
patent: 4362707 (1982-12-01), Hardee et al.
patent: 4381290 (1983-04-01), Hardee et al.
patent: 4389290 (1983-06-01), Gratzel et al.
patent: 4402996 (1983-09-01), Gauger et al.
patent: 4457823 (1984-07-01), LaConti et al.
patent: 4467045 (1984-08-01), Fung
patent: 4501824 (1985-02-01), Hardee et al.
patent: 4517076 (1985-05-01), Boyle et al.
patent: 4545886 (1985-10-01), De Nora et al.
patent: 4585540 (1986-04-01), Beer et al.
patent: 4738939 (1988-04-01), Boyle
patent: 4872970 (1989-10-01), Boyle
patent: 5334570 (1994-08-01), Beauseigneur et al.
patent: 5733836 (1998-03-01), Stinn et al.
patent: 5861222 (1999-01-01), Fischer et al.
patent: 6309772 (2001-10-01), Zuber et al.
patent: 6500217 (2002-12-01), Starz et al.
patent: 6872286 (2005-03-01), Ichikawa et al.
patent: 2003/0057088 (2003-03-01), Ichikawa et al.
patent: 2004/0245148 (2004-12-01), Xu
patent: 2005/0067322 (2005-03-01), Xu
patent: 102 11 701 (2003-09-01), None
patent: 1195871 (1970-06-01), None
patent: 10-273791 (1998-10-01), None
patent: 2001-219073 (2001-08-01), None
patent: 2003-293196 (2003-10-01), None
Beck, Guenter, “Edelmetall-Taschenbuch, Chapter 8.3.3,” 1995, pp. 409-413, Huethig-Verlag, Heidelberg, Germany.
Ioroi, T. et al., “IrO2-deposited Pt electrocatalysts for unitized regenerative polymer electrolyte fuel cells,” Journal of Applied Electrochemistry, 2001, pp. 1179-1183, vol. 31, Kluwer Academic Publishers, Netherlands.
Rasten, Egil et al., “Effect of Thermal Treatment of IrO2Anode Catalysts for PEM Water Electrolysis,” Electrochemical Society Proceedings, 2001, pp. 151-164, vol. 2001-23, Norway.
Adams, Roger et al., Platinum Oxide as a Catalyst in the Reduction of Organic Compounds. III. Preparation and Properties of the Oxide of Platinum Obtained by the Fusion of Chloroplatinic Acid with Sodium Nitrate, J. Am. Chem. Soc., Sep. 1923, pp. 2171-2179, vol. 45, United States.

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