Title:
燃料電池の電極を構成する触媒層から貴金属を回収する方法
Document Type and Number:
Japanese Patent JP4501706
Kind Code:
B2
Abstract:
To provide a method for recovering a noble metal, which is a catalyst, from a catalyst layer of a used fuel cell with high efficiency at high purity and by a simple operation.
The catalyst layer is taken out of a membrane-electrode assembly of the fuel cell and after the catalyst layer is pulverized, the powder is put into an electrodeposition liquid composed of a polar solvent (for example, acetonitrile) and a basic compound (for example, triethylamine) and is subjected to electrophoresis. Carbon powder is ionized and is deposited on the electrode 2. The noble metal is recovered by a means, such as filtration, from the electrodeposition liquid separated from the carbon powder.
COPYRIGHT: (C)2006,JPO&NCIPI
Inventors:
Hironari Takase
Application Number:
JP2005024007A
Publication Date:
July 14, 2010
Filing Date:
January 31, 2005
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
C22B11/00; B01D57/02; B01J23/42; B01J38/00; B03C5/00; B09B5/00; C22B3/00; C22B7/00; H01M4/86; H01M8/00; H01M8/10
Domestic Patent References:
| JP60184647A | ||||
| JP2003317724A | ||||
| JP56097859A |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Yasushi Hayakawa
Sekiya Mitsuo
Yasushi Hayakawa