title: Ultra-high-performance core-shell structured Ru@Pt/C catalyst prepared by a facile pulse electrochemical deposition method.
abstract: Core-shell structured catalysts, made by placing either a monolayer or a thin layer of a noble metal on relatively cheap core-metal nanoparticles, are fascinating and promising fuel cell catalysts due to their high utilization of noble metals. Here, we report our development of a core-shell structured catalyst, Ru@Pt/C, generated by a novel and facile pulse electrochemical deposition (PED) approach. We demonstrate that compared with a commercial Pt/C catalyst, this novel catalyst achieves over four times higher mass activity towards the anodic oxidation of methanol, and 3.6 times higher mass activity towards the cathodic reduction of oxygen. Importantly, we find that the intrinsic activity of Pt in this Ru@Pt/C catalyst is doubled due to the formation of the core-shell structure. The catalyst also shows superior stability: even after 2000 scans, it still retains up to 90% of the peak current. Our findings demonstrate that this novel PED approach is a promising method for preparing high-performance core-shell catalysts for fuel cell applications.
authors.affiliation: Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Chen
authors.affiliation: Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China.|Department of Chemistry, Datong University, Datong, 037009, China.
authors.forename: Yuexia
authors.initials: Y
authors.lastname: Li
authors.affiliation: Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China.
authors.forename: Shijun
authors.initials: S
authors.lastname: Liao
authors.affiliation: Functional Nanomaterials Center, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Dong
authors.initials: D
authors.lastname: Su
authors.affiliation: Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China.
authors.forename: Huiyu
authors.initials: H
authors.lastname: Song
authors.affiliation: Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China.
authors.forename: Yingwei
authors.initials: Y
authors.lastname: Li
authors.affiliation: Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Yang
authors.affiliation: Dalian Institute of Physics and Chemistry, Academy of China, Dalian, 116023, China.
authors.forename: Can
authors.initials: C
authors.lastname: Li