Pt Hollow Nanospheres as an Electrocatalyst for the Oxygen Reduction Reaction. (7th July 2017)

• Record Type: Journal Article
• Authors: Fang, Baizeng; Bonakdarpour, Arman; Pinaud, Blaise A; Wilkinson, David P
• Is Part Of: ECS transactions. Volume 77:Number 11(2017)
• Page Start: 1367
• Page End: 1373
• Publication Date: 2017-07-07
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07711.1367ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Pt hollow nanospheres (HNSs) were deposited uniformly on commercial Vulcan XC-72R (VC) and explored as an electrocatalyst for the oxygen reduction reaction (ORR) in PEMFCs. VC-supported Pt HNSs have a uniform Pt HNS particle size of ca. 18 nm and a homogeneous particle distribution on the support. The Pt HNSs consist of discrete Pt nanoparticles (NPs) with a crystallite size of ca. 2-3 nm. Compared with its counterpart Pt(20 wt%)NP/VC the as-synthesized Pt(20 wt%)HNS/VC has demonstrated a considerable enhancement in the mass activity towards the ORR because of its unique nanostructure and the contribution from alloying of Pt with Co.