[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7844/kirr.2012.21.3.015

A Study on the Separation of Membrane and Leaching of Platinum and Ruthenium by Hydrochloric Acid from MEA of Fuel Cell

Lee, Jin-A (Korean Research Institute of Chemical Technology, Energy Materials Research Center)
Kang, Hong-Yoon (Korea Institute of Industrial Technology, Center for Resources Information and Management)
Ryu, Ho-Jin (Korean Research Institute of Chemical Technology, Energy Materials Research Center)

Publication Information

Resources Recycling / v.21, no.3, 2012 , pp. 15-20 More about this Journal

Abstract

In this paper, we carried out separation of membrane and leaching of Pt and Ru using hydrochloric acid from MEA(membrane-electrode assembly) of fuel cell. In this method, these were separated from MEA of fuel cell using the distilled water, 10 vol.% butanol solution and 15 vol.% cationic surfactant(Koremul-LN-7) by dipping method without the dispersion of catalyst particles. And the leaching of Pt and Ru containing in the separated carbon paper catalysts has been studied by hydrochloric acid using $HNO_3$ or $H_2O_2$ as a oxidant. The leaching ratio of Pt and Ru were higher when $H_2O_2$ was used as a oxidant and the optimum conditions were obtained in 8M HCl, the amount of $H_2O_2$ 5M and 6 hours of leaching time at $90^{\circ}C$ . In this condition, extraction of Pt and Ru were 98% and 71.5%, respectively.

Keywords

Fuel cell; Membrane-electrode Assembly(MEA); Hydrochloric acid leaching; Platinum; Ruthenium;

Citations & Related Records

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