Hyundai Motor Company

Snu Rdb Foundation

Korea Institute of Science and Technology

Hee-young Park

Jae Seung Lee

Yung-Eun Sung

Tae-Yeol Jeon

Jonghee Han

Hyoung-Juhn Kim

Jong Hyun Jang

Suk Woo Nam

Sung Jong Yoo

Sung Pil Yoon

Dirk Henkensmeier

Eun Ae Cho

Hyung Chul Ham

Nak Hyun Kwon

Tae-Hoon Lim

Ju Wan Lim

Bumwook Roh

Young-Hoon Chung

A polymer electrolyte membrane fuel cell is provided. The polymer electrolyte membrane fuel cell includes a phosphoric acid-doped polyimidazole electrolyte membrane and a complex catalyst. In the complex catalyst, an alloy or mixture of a metal and a chalcogen element is supported on a carbon carrier. The polymer electrolyte membrane fuel cell exhibits further improved long-term operation, power generation efficiency, and operational stability at high temperature. The complex catalyst can be produced by a simple method.

Polymer electrolyte membrane fuel cell including complex catalyst and method for producing the complex catalyst

Disclosed is a method for preparing nickel or palladium nanoparticles supported on a carbon support. To a mixture solution wherein a stabilizer is dissolved in 1,2-propanediol, a carbon support is added to prepare a dispersion. Then, a precursor solution wherein a nickel or palladium precursor dissolved in 1,2-propanediol is mixed therewith and stirred. Then, nickel or palladium nanoparticles supported on the carbon support are prepared by reduction. The disclosed method for preparing nickel or palladium nanoparticles supported on a carbon support allows preparation of nanoparticles with narrow particle size distribution and good dispersibility through a simple process and the resulting nickel or palladium nanoparticles may be usefully applied, for example, as electrode materials of fuel cells.

Method for preparing nano-sized metal particles on a carbon support

The present invention features a method for preparing core-shell nanoparticles supported on carbon. In particular, the present invention features a method for preparing core-shell nanoparticles supported on carbon, including: dispersing core nanoparticle powder supported on carbon in ethanol; adding a metal precursor which forms a shell and hydroquinone thereto; and mixing and reducing the same. Preferably, the disclosed method for preparing core-shell nanoparticles supported on carbon enables coating of transition metal nanoparticles including platinum on the surface of core metal nanoparticles at a monolayer level. Prepared core-shell nanoparticles of the present invention may be useful as catalysts or electrode materials of fuel cells.

Synthesis methods of core-shell nanoparticles on a carbon support

Growing community of inventors

Gyeongsangnam-do, South Korea

Hee-young Park