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Title: Controllable deposition of platinum layers on oxide surfaces for the synthesis of fuel cell catalysts

Journal Article · · ChemElectroChem
 [1];  [1];  [2];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); Jinan Univ., Guangdong (China)
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Abstract Reducing the amount of Pt, the most costly component of both anode and cathode fuel cell catalysts, has attracted considerable attention from the research community. An approach is reported herein to deposit sub‐monolayer to multilayer amounts of Pt and other noble metals on metal oxides and oxidized carbon materials. The process is exemplified by Pt deposition on RuO 2 (110). The Pt deposit consists of Pt atoms arranged in a c (2×2) array, that is, a 0.25 monolayer (ML). The deposit has lower catalytic activity for the oxygen reduction reaction (ORR) and similar activity for the hydrogen oxidation reaction compared to Pt(111). These activities are explained by a large calculated upshift of the d‐band center of Pt atoms and larger Pt–Pt interatomic distances than those of Pt(111). A catalyst with Pt coverage larger than 0.25 ML on oxide surfaces and oxidized carbon materials is shown to be active for the ORR as well as for other electrocatalytic reactions. A PtRhSnO 2 /C catalyst shows high activity for ethanol oxidation as a result of its ability to effectively cleave the C−C bond in ethanol. Pt deposited on reduced graphene oxide shows high Pt mass ORR activity and good stability.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704; SC0012704
OSTI ID:
1326755
Alternate ID(s):
OSTI ID: 1401479
Report Number(s):
BNL-112650-2016-JA; R&D Project: MA510MAEA; KC0302010
Journal Information:
ChemElectroChem, Journal Name: ChemElectroChem; ISSN 2196-0216
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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