Ultralow content of Pt on Pd–Co–Cu/C ternary nanoparticles with excellent electrocatalytic activity and durability for the oxygen reduction reaction
Abstract
Optimizing the utilization of Pt to catalyze the sluggish kinetics of the oxygen reduction reaction (ORR) is of vital importance in proton exchange membrane fuel cells. One of the strategies is to spread Pt atoms over the surface of a substrate to increase the surface area. We report a facile method to synthesize Pd6CoCu@Pt/C core-shell nanoparticles with an ultralow amount of Pt. It was found that Pt-coated layer on Pd6CoCu cores plays a vital role in enhancing the ORR activity and the cycling stability. The half-wave potential of Pd6CoCu@Pt/C positively shifts about 50 mV and 17 mV relative to Pd6CoCu/C and Pt/C, respectively. The Pt mass activity on Pd6CoCu@Pt/C was calculated to be about 27 times higher than that on Pt/C catalysts at 0.9 V. Furthermore, the Pd6CoCu@Pt/C nanoparticles exhibit superior stability with almost no decay for the ORR polarization curves during 10,000 potential cycles and the core-shell structure remains with only a slight increase in the thickness of the Pt overlayer. Our findings provide a methodology for synthesizing highly efficient catalytic materials for the cathodic application in fuel cells.
- Authors:
-
- Huazhong Univ. of Science and Technology, Wuhan (China). School of Chemistry and Chemical Engineering
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1336137
- Alternate Identifier(s):
- OSTI ID: 1359610
- Report Number(s):
- BNL-112611-2016-JA
Journal ID: ISSN 2211-2855; KC0403020
- Grant/Contract Number:
- SC00112704; SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nano Energy
- Additional Journal Information:
- Journal Volume: 27; Journal Issue: C; Journal ID: ISSN 2211-2855
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; fuel cells; oxygen reduction reaction; Pd6CoCu/C nanoparticles; electrocatalysis; core-shell; Pt monolayer
Citation Formats
Liu, Sufen, Xiao, Weiping, Wang, Jie, Zhu, Jing, Wu, Zexing, Xin, Huolin, and Wang, Deli. Ultralow content of Pt on Pd–Co–Cu/C ternary nanoparticles with excellent electrocatalytic activity and durability for the oxygen reduction reaction. United States: N. p., 2016.
Web. doi:10.1016/j.nanoen.2016.07.038.
Liu, Sufen, Xiao, Weiping, Wang, Jie, Zhu, Jing, Wu, Zexing, Xin, Huolin, & Wang, Deli. Ultralow content of Pt on Pd–Co–Cu/C ternary nanoparticles with excellent electrocatalytic activity and durability for the oxygen reduction reaction. United States. https://doi.org/10.1016/j.nanoen.2016.07.038
Liu, Sufen, Xiao, Weiping, Wang, Jie, Zhu, Jing, Wu, Zexing, Xin, Huolin, and Wang, Deli. Mon .
"Ultralow content of Pt on Pd–Co–Cu/C ternary nanoparticles with excellent electrocatalytic activity and durability for the oxygen reduction reaction". United States. https://doi.org/10.1016/j.nanoen.2016.07.038. https://www.osti.gov/servlets/purl/1336137.
@article{osti_1336137,
title = {Ultralow content of Pt on Pd–Co–Cu/C ternary nanoparticles with excellent electrocatalytic activity and durability for the oxygen reduction reaction},
author = {Liu, Sufen and Xiao, Weiping and Wang, Jie and Zhu, Jing and Wu, Zexing and Xin, Huolin and Wang, Deli},
abstractNote = {Optimizing the utilization of Pt to catalyze the sluggish kinetics of the oxygen reduction reaction (ORR) is of vital importance in proton exchange membrane fuel cells. One of the strategies is to spread Pt atoms over the surface of a substrate to increase the surface area. We report a facile method to synthesize Pd6CoCu@Pt/C core-shell nanoparticles with an ultralow amount of Pt. It was found that Pt-coated layer on Pd6CoCu cores plays a vital role in enhancing the ORR activity and the cycling stability. The half-wave potential of Pd6CoCu@Pt/C positively shifts about 50 mV and 17 mV relative to Pd6CoCu/C and Pt/C, respectively. The Pt mass activity on Pd6CoCu@Pt/C was calculated to be about 27 times higher than that on Pt/C catalysts at 0.9 V. Furthermore, the Pd6CoCu@Pt/C nanoparticles exhibit superior stability with almost no decay for the ORR polarization curves during 10,000 potential cycles and the core-shell structure remains with only a slight increase in the thickness of the Pt overlayer. Our findings provide a methodology for synthesizing highly efficient catalytic materials for the cathodic application in fuel cells.},
doi = {10.1016/j.nanoen.2016.07.038},
journal = {Nano Energy},
number = C,
volume = 27,
place = {United States},
year = {Mon Aug 01 00:00:00 EDT 2016},
month = {Mon Aug 01 00:00:00 EDT 2016}
}
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