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Title: Enhanced Electro-Kinetics of C-C Bond-Splitting during Ethanol Oxidation Reaction using Pt/Rh/Sn Catalyst with a Partially Oxidized Pt and Rh Core and a SnO2 Shell

Direct ethanol fuel cell (DEFC) is a promising technology for generating electricity via the electro-oxidation of liquid ethanol. Its implementation requires the development of anode catalysts capable of producing CO 2 and yielding 12-electron transfer through breaking C-C bond of ethanol. Here we presented comprehensive studies of electro-kinetics of the CO 2 generation on Pt/Rh/Sn ternary catalysts. Our studies showed that, for the first time, the tri–phase PtRhOx- SnO 2 catalysts with a partially oxidized Pt and Rh core and a SnO 2 shell, validated by X-ray absorption analyses and scanning transmission electron microscope-electron energy loss spectroscopy line scan, coincided with a 2.5-fold increase in the CO 2 generation rate towards ethanol oxidation reaction, compared with the bi-phase PtRh-SnO 2 catalysts with a metallic PtRh alloy core and commercial Pt. These studies provided insight on the design of a new genre of electro-catalysts with a partially oxidized noble metal.
Authors:
 [1] ;  [2] ;  [3] ;  [1]
  1. Univ. of New Hampshire, Durham, NH (United States)
  2. Stony Brook Univ., NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Report Number(s):
BNL-112746-2016-JA
Journal ID: ISSN 1867-3899; R&D Project: 16060; 16060; KC0403020
Grant/Contract Number:
SC00112704; SC0012335
Type:
Accepted Manuscript
Journal Name:
ChemCatChem (Online)
Additional Journal Information:
Journal Name: ChemCatChem (Online); Journal Volume: 8; Journal Issue: 18; Journal ID: ISSN 1867-3899
Publisher:
ChemPubSoc Europe
Research Org:
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY, AND ECONOMY; PtRhOx-SnO2; Ethanol Oxidation Reaction; C-C Bond; Center for Functional Nanomaterials
OSTI Identifier:
1329802
Alternate Identifier(s):
OSTI ID: 1401703