title: Realization of Both High-Performance and Enhanced Durability of Fuel Cells: Pt-Exoskeleton Structure Electrocatalysts.
abstract: Core-shell structure nanoparticles have been the subject of many studies over the past few years and continue to be studied as electrocatalysts for fuel cells. Therefore, many excellent core-shell catalysts have been fabricated, but few studies have reported the real application of these catalysts in a practical device actual application. In this paper, we demonstrate the use of platinum (Pt)-exoskeleton structure nanoparticles as cathode catalysts with high stability and remarkable Pt mass activity and report the outstanding performance of these materials when used in membrane-electrode assemblies (MEAs) within a polymer electrolyte membrane fuel cell. The stability and degradation characteristics of these materials were also investigated in single cells in an accelerated degradation test using load cycling, which is similar to the drive cycle of a polymer electrolyte membrane fuel cell used in vehicles. The MEAs with Pt-exoskeleton structure catalysts showed enhanced performance throughout the single cell test and exhibited improved degradation ability that differed from that of a commercial Pt/C catalyst.
authors.affiliation: †Department of Science, Republic of Korea Naval Academy, Jinhae-gu, Changwon 645-797, South Korea.
authors.forename: Ok-Hee
authors.initials: OH
authors.lastname: Kim
authors.affiliation: ‡Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-747, South Korea.|§School of Chemical and Biological Engineering, Seoul National University, Seoul 151-747, South Korea.
authors.forename: Yoon-Hwan
authors.initials: YH
authors.lastname: Cho
authors.affiliation: ∥Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, South Korea.
authors.forename: Tae-Yeol
authors.initials: TY
authors.lastname: Jeon
authors.affiliation: ⊥Department of Chemical Engineering, Kangwon National University, Samcheok 245-711, South Korea.
authors.forename: Jung Won
authors.initials: JW
authors.lastname: Kim
authors.affiliation: ⊥Department of Chemical Engineering, Kangwon National University, Samcheok 245-711, South Korea.
authors.forename: Yong-Hun
authors.initials: YH
authors.lastname: Cho
authors.affiliation: ‡Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-747, South Korea.|§School of Chemical and Biological Engineering, Seoul National University, Seoul 151-747, South Korea.
authors.forename: Yung-Eun
authors.initials: YE
authors.lastname: Sung
keywords: core/shell nanoparticles; degradation; electrocatalysts; fuel cells; membrane electrode assemblies