Effects of crystal phase and composition on structurally ordered Pt–Co–Ni/C ternary intermetallic electrocatalysts for the formic acid oxidation reaction
Abstract
In this paper, to enhance the electrocatalytic performance of the formic acid oxidation reaction (FAOR), structurally ordered face-centered tetragonal (fct) Pt–Co–Ni/C intermetallic nanoparticles were synthesized via an impregnation reduction method, followed by post heat-treatment. It was found that an ordered intermetallic PtCo phase prevails rather than PtNi as the principal part for the ternary Pt–Co–Ni alloy after being annealed at high temperature, namely, Ni atoms merely serve as the substitute for Co in the lattice of Pt–Co–Ni intermetallics possessing the same atomic stack as PtCo intermetallics. In addition, there is a limitation for Ni to replace Co for the intermetallic PtCo phase, otherwise, most likely excessive Ni would replace the Pt atoms and damage the atomically ordered structure. Benefiting from the ordered structural features and rational introduction of the third transition metal to modify the distance between Pt and Pt atoms, the Pt–Co–Ni/C ordered intermetallic nanoparticles exhibit an enhancement in catalytic activity for the FAOR compared with Pt/C, the PtNi/C alloy and ordered intermetallic PtCo/C nanoparticles. Furthermore, the presence of Ni in the ordered intermetallic Pt–Co–Ni/C catalyst leads to a noticeable improvement in durability compared with the ordered intermetallic PtCo/C catalyst. Finally, the present work reveals opportunities for the rationalmore »
- Authors:
-
[1]
- Huazhong Univ. of Science and Technology, Wuhan (China). Key Lab. of Material Chemistry for Energy Conversion and Storage. Hubei Key Lab. of Material Chemistry and Service Failure. School of Chemistry and Chemical Engineering
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials; Southeast Univ., Nanjing (China). SEU-FEI Nano-Pico Center. Key Lab. of MEMS of the Ministry of Education
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States); Huazhong Univ. of Science and Technology, Wuhan (China)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); 1000 Young Talent Program (China); Huazhong Univ. of Science and Technology (China)
- OSTI Identifier:
- 1460694
- Report Number(s):
- BNL-207823-2018-JAAM
Journal ID: ISSN 2050-7488
- Grant/Contract Number:
- SC0012704; 21573083; 2017KFYXJJ164
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Materials Chemistry. A
- Additional Journal Information:
- Journal Volume: 6; Journal Issue: 14; Journal ID: ISSN 2050-7488
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Chen, Lingxuan, Zhu, Jing, Xuan, Cuijuan, Xiao, Weiping, Xia, Kedong, Xia, Weiwei, Lai, Chenglong, Xin, Huolin L., and Wang, Deli. Effects of crystal phase and composition on structurally ordered Pt–Co–Ni/C ternary intermetallic electrocatalysts for the formic acid oxidation reaction. United States: N. p., 2018.
Web. doi:10.1039/C7TA11051K.
Chen, Lingxuan, Zhu, Jing, Xuan, Cuijuan, Xiao, Weiping, Xia, Kedong, Xia, Weiwei, Lai, Chenglong, Xin, Huolin L., & Wang, Deli. Effects of crystal phase and composition on structurally ordered Pt–Co–Ni/C ternary intermetallic electrocatalysts for the formic acid oxidation reaction. United States. https://doi.org/10.1039/C7TA11051K
Chen, Lingxuan, Zhu, Jing, Xuan, Cuijuan, Xiao, Weiping, Xia, Kedong, Xia, Weiwei, Lai, Chenglong, Xin, Huolin L., and Wang, Deli. Tue .
"Effects of crystal phase and composition on structurally ordered Pt–Co–Ni/C ternary intermetallic electrocatalysts for the formic acid oxidation reaction". United States. https://doi.org/10.1039/C7TA11051K. https://www.osti.gov/servlets/purl/1460694.
@article{osti_1460694,
title = {Effects of crystal phase and composition on structurally ordered Pt–Co–Ni/C ternary intermetallic electrocatalysts for the formic acid oxidation reaction},
author = {Chen, Lingxuan and Zhu, Jing and Xuan, Cuijuan and Xiao, Weiping and Xia, Kedong and Xia, Weiwei and Lai, Chenglong and Xin, Huolin L. and Wang, Deli},
abstractNote = {In this paper, to enhance the electrocatalytic performance of the formic acid oxidation reaction (FAOR), structurally ordered face-centered tetragonal (fct) Pt–Co–Ni/C intermetallic nanoparticles were synthesized via an impregnation reduction method, followed by post heat-treatment. It was found that an ordered intermetallic PtCo phase prevails rather than PtNi as the principal part for the ternary Pt–Co–Ni alloy after being annealed at high temperature, namely, Ni atoms merely serve as the substitute for Co in the lattice of Pt–Co–Ni intermetallics possessing the same atomic stack as PtCo intermetallics. In addition, there is a limitation for Ni to replace Co for the intermetallic PtCo phase, otherwise, most likely excessive Ni would replace the Pt atoms and damage the atomically ordered structure. Benefiting from the ordered structural features and rational introduction of the third transition metal to modify the distance between Pt and Pt atoms, the Pt–Co–Ni/C ordered intermetallic nanoparticles exhibit an enhancement in catalytic activity for the FAOR compared with Pt/C, the PtNi/C alloy and ordered intermetallic PtCo/C nanoparticles. Furthermore, the presence of Ni in the ordered intermetallic Pt–Co–Ni/C catalyst leads to a noticeable improvement in durability compared with the ordered intermetallic PtCo/C catalyst. Finally, the present work reveals opportunities for the rational design of ternary electrocatalysts with enhanced catalytic performance for fuel cell applications.},
doi = {10.1039/C7TA11051K},
journal = {Journal of Materials Chemistry. A},
number = 14,
volume = 6,
place = {United States},
year = {2018},
month = {2}
}
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Figures / Tables:
Figure 1: XRD patterns of PtCo/C, PtCo0.75Ni0.25/C, PtCo0.5Ni0.5/C, PtCo0.25Ni0.75/C PtNi/C and Pt/C after annealing at 700 °C for 2 h. The black and red vertical lines correspond to the peaks of pure Pt (PDF card # 01-070-2057), intermetallic PtCo (PDF card # 03-065- 8969), respectively. The (*) indicates the peakmore »
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