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Title: Efficient process for previous metal recovery from cell membrane electrode assemblies

Abstract

A method is provided for recovering a catalytic element from a fuel cell membrane electrode assembly. The method includes grinding the membrane electrode assembly into a powder, extracting the catalytic element by forming a slurry comprising the powder and an acid leachate adapted to dissolve the catalytic element into a soluble salt, and separating the slurry into a depleted powder and a supernatant containing the catalytic element salt. The depleted powder is washed to remove any catalytic element salt retained within pores in the depleted powder and the catalytic element is purified from the salt.

Inventors:
; ;
Issue Date:
Research Org.:
BASF Corporation, Florham Park, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176271
Patent Number(s):
7709135
Application Number:
12/134,394
Assignee:
BASF Corporation (Florham Park, NJ)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
DOE Contract Number:  
FC36-03GO13104
Resource Type:
Patent
Resource Relation:
Patent File Date: 2008 Jun 06
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Shore, Lawrence, Matlin, Ramail, and Heinz, Robert. Efficient process for previous metal recovery from cell membrane electrode assemblies. United States: N. p., 2010. Web.
Shore, Lawrence, Matlin, Ramail, & Heinz, Robert. Efficient process for previous metal recovery from cell membrane electrode assemblies. United States.
Shore, Lawrence, Matlin, Ramail, and Heinz, Robert. Tue . "Efficient process for previous metal recovery from cell membrane electrode assemblies". United States. https://www.osti.gov/servlets/purl/1176271.
@article{osti_1176271,
title = {Efficient process for previous metal recovery from cell membrane electrode assemblies},
author = {Shore, Lawrence and Matlin, Ramail and Heinz, Robert},
abstractNote = {A method is provided for recovering a catalytic element from a fuel cell membrane electrode assembly. The method includes grinding the membrane electrode assembly into a powder, extracting the catalytic element by forming a slurry comprising the powder and an acid leachate adapted to dissolve the catalytic element into a soluble salt, and separating the slurry into a depleted powder and a supernatant containing the catalytic element salt. The depleted powder is washed to remove any catalytic element salt retained within pores in the depleted powder and the catalytic element is purified from the salt.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {5}
}

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Works referenced in this record:

Solubility of chlorine in aqueous hydrochloric acid solutions
journal, March 2005