@article{Jackson:2018:10.1016/j.jelechem.2017.10.010,
author = {Jackson, C and Smith, GT and Markiewicz, M and Inwood, DW and Leach, AS and Whalley, PS and Kucernak, AR and Russell, AE and Kramer, D and Levecque, PBJ},
doi = {10.1016/j.jelechem.2017.10.010},
journal = {Journal of Electroanalytical Chemistry},
pages = {163--170},
title = {Support induced charge transfer effects on electrochemical characteristics of Pt nanoparticle electrocatalysts},
url = {http://dx.doi.org/10.1016/j.jelechem.2017.10.010},
volume = {819},
year = {2018}
}

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TY  - JOUR
AB  - The electrokinetic properties of Pt nanoparticles supported on Carbon (Pt/C) and Boron Carbide-Graphite composite (Pt/BC) are compared over a wide potential range. The influence of the support on the electronic state of Pt was investigated via in-situ X-ray Absorption Spectroscopy. Pt d-band filling, determined from XANES white line analysis, was lower and nearly constant between 0.4 and 0.95V vs. RHE for Pt/BC, indicating more positively charged particles in the double layer region and a delay in the onset of oxide formation by about 0.2V compared to the Pt/C catalyst, which showed a marked increase in d-band vacancies above 0.8V vs. RHE. Moreover, δμ analysis of the XANES data indicated a lack of sub-surface oxygen for the Pt/BC catalyst compared to the Pt/C catalyst above 0.9V vs. RHE. Additional anion adsorption on the Pt/BC in the double layer region, detected by CO displacement, was also confirmed by XANES analysis of the d-band occupancy. The H 2 oxidation activities of electrodes with low catalyst loadings were assessed under high mass transport conditions using the floating electrode methodology. The metal-support interaction between the Pt and BC support improved the maximum hydrogen oxidation current density by 1.4 times when compared to Pt/C.
AU  - Jackson,C
AU  - Smith,GT
AU  - Markiewicz,M
AU  - Inwood,DW
AU  - Leach,AS
AU  - Whalley,PS
AU  - Kucernak,AR
AU  - Russell,AE
AU  - Kramer,D
AU  - Levecque,PBJ
DO  - 10.1016/j.jelechem.2017.10.010
EP  - 170
PY  - 2018///
SN  - 1572-6657
SP  - 163
TI  - Support induced charge transfer effects on electrochemical characteristics of Pt nanoparticle electrocatalysts
T2  - Journal of Electroanalytical Chemistry
UR  - http://dx.doi.org/10.1016/j.jelechem.2017.10.010
UR  - http://hdl.handle.net/10044/1/54277
VL  - 819
ER  - 

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