Title:
A method of collecting the precious metals from the membrane electrode zygote of a fuel cell
Document Type and Number:
Japanese Patent JP6109769
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of recovering precious metals which enables recovering precious metals efficiently from a membrane electrode assembly of a fuel battery without occurrence of accidental harmful substances.SOLUTION: A method of recovering precious metals from a membrane electrode assembly of a fuel battery includes an oxidation step of applying an oxidation potential to the membrane electrode assembly in a state where the membrane electrode assembly is immersed in a dissolving solution, and a reduction step of applying a reduction potential to the membrane electrode assembly. The oxidation step and the reduction step are repeated alternately in such a way that a ratio between a time (a) for the application of the reduction potential and a time (b) for the application of the oxidation potential, namely a/b, is 0.1-1.0.
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Inventors:
Motoshige Yagyu
Kanamura Shohei
Kanamura Shohei
Application Number:
JP2014038962A
Publication Date:
April 05, 2017
Filing Date:
February 28, 2014
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
C22B11/00; B09B3/00; C22B3/06; C22B7/00; C22B23/00
Domestic Patent References:
| JP60184647A | ||||
| JP2010509050A | ||||
| JP2014185366A |
Other References:
林信二郎 他,電気化学的手法による燃料電池用貴金属触媒回収法の開発,太陽/風力エネルギー講演論文集2010,日本,日本太陽エネルギー学会,2010年11月 4日,pp513-516
Attorney, Agent or Firm:
Patent Business Corporation Sakura International Patent Office
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