The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2010
Filed:
Aug. 31, 2005
Joachim Koehler, Gruendau/Haingruendau, DE;
Ralf Zuber, Grossostheim, DE;
Matthias Binder, Freigericht, DE;
Volker Baenisch, Erlensee, DE;
Marco Lopez, Frankfurt, DE;
Joachim Koehler, Gruendau/Haingruendau, DE;
Ralf Zuber, Grossostheim, DE;
Matthias Binder, Freigericht, DE;
Volker Baenisch, Erlensee, DE;
Marco Lopez, Frankfurt, DE;
Umicore AG & Co. KG, Hanau-Wolfgang, DE;
Abstract
The invention relates to a process for recycling fuel cell components containing fluorine-containing and precious metal-containing constituents: in this process, the fluorine-containing constituents are separated off from the precious metal-containing constituents by treatment with a medium present in the supercritical state. Preference is given to using water as supercritical medium. After the fluorine-containing constituents have been separated off, the precious metal-containing residues can be recovered in a recycling process without harmful fluorine or hydrogen fluoride emissions. The fluorine-containing constituents can likewise be recovered. The process is used in the recovery of precious metals and/or fluorine-containing constituents from membrane fuel cells, electrolysis cells, batteries, sensors and other electrochemical devices.