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Title: Hard-Magnet L10-CoPt Nanoparticles Advance Fuel Cell Catalysis

Abstract

Stabilizing transition metals (M) in MPt alloy under acidic conditions is challenging, yet crucial to boost Pt catalysis toward oxygen reduction reaction (ORR). We synthesized ~9 nm hard-magnet core/shell L10-CoPt/Pt nanoparticles with 2–3 atomic layers of strained Pt shell for ORR. At 60°C in acid, the hard-magnet L10-CoPt better stabilizes Co (5% loss after 24 hr) than soft-magnet A1-CoPt (34% loss in 7 hr). L10-CoPt/Pt achieves mass activities (MA) of 0.56 A/mgPt initially and 0.45 A/mgPt after 30,000 voltage cycles in the membrane electrode assembly at 80°C, exceeding the DOE 2020 targets on Pt activity and durability (0.44 A/mgPt in MA and <40% loss in MA after 30,000 cycles). Lastly, density functional theory calculations suggest that the ligand effect of Co and the biaxial strain (-4.50%/-4.25%) of the Pt shell weaken the binding of oxygenated species, leading to enhanced ORR performance in fuel cells.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1591934
Alternate Identifier(s):
OSTI ID: 1494465; OSTI ID: 1531228
Report Number(s):
LA-UR-18-28949
Journal ID: ISSN 2542-4351; S2542435118304549; PII: S2542435118304549
Grant/Contract Number:  
AC52-06NA25396; AC02-06CH11357; 89233218CNA000001; AC05-00OR22725
Resource Type:
Published Article
Journal Name:
Joule
Additional Journal Information:
Journal Name: Joule Journal Volume: 3 Journal Issue: 1; Journal ID: ISSN 2542-4351
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Energy Sciences

Citation Formats

Li, Junrui, Sharma, Shubham, Liu, Xiaoming, Pan, Yung-Tin, Spendelow, Jacob S., Chi, Miaofang, Jia, Yukai, Zhang, Peng, Cullen, David A., Xi, Zheng, Lin, Honghong, Yin, Zhouyang, Shen, Bo, Muzzio, Michelle, Yu, Chao, Kim, Yu Seung, Peterson, Andrew A., More, Karren L., Zhu, Huiyuan, and Sun, Shouheng. Hard-Magnet L10-CoPt Nanoparticles Advance Fuel Cell Catalysis. United States: N. p., 2019. Web. doi:10.1016/j.joule.2018.09.016.
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Li, Junrui, Sharma, Shubham, Liu, Xiaoming, Pan, Yung-Tin, Spendelow, Jacob S., Chi, Miaofang, Jia, Yukai, Zhang, Peng, Cullen, David A., Xi, Zheng, Lin, Honghong, Yin, Zhouyang, Shen, Bo, Muzzio, Michelle, Yu, Chao, Kim, Yu Seung, Peterson, Andrew A., More, Karren L., Zhu, Huiyuan, & Sun, Shouheng. Hard-Magnet L10-CoPt Nanoparticles Advance Fuel Cell Catalysis. United States. https://doi.org/10.1016/j.joule.2018.09.016
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Li, Junrui, Sharma, Shubham, Liu, Xiaoming, Pan, Yung-Tin, Spendelow, Jacob S., Chi, Miaofang, Jia, Yukai, Zhang, Peng, Cullen, David A., Xi, Zheng, Lin, Honghong, Yin, Zhouyang, Shen, Bo, Muzzio, Michelle, Yu, Chao, Kim, Yu Seung, Peterson, Andrew A., More, Karren L., Zhu, Huiyuan, and Sun, Shouheng. Tue . "Hard-Magnet L10-CoPt Nanoparticles Advance Fuel Cell Catalysis". United States. https://doi.org/10.1016/j.joule.2018.09.016.
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@article{osti_1591934,
title = {Hard-Magnet L10-CoPt Nanoparticles Advance Fuel Cell Catalysis},
author = {Li, Junrui and Sharma, Shubham and Liu, Xiaoming and Pan, Yung-Tin and Spendelow, Jacob S. and Chi, Miaofang and Jia, Yukai and Zhang, Peng and Cullen, David A. and Xi, Zheng and Lin, Honghong and Yin, Zhouyang and Shen, Bo and Muzzio, Michelle and Yu, Chao and Kim, Yu Seung and Peterson, Andrew A. and More, Karren L. and Zhu, Huiyuan and Sun, Shouheng},
abstractNote = {Stabilizing transition metals (M) in MPt alloy under acidic conditions is challenging, yet crucial to boost Pt catalysis toward oxygen reduction reaction (ORR). We synthesized ~9 nm hard-magnet core/shell L10-CoPt/Pt nanoparticles with 2–3 atomic layers of strained Pt shell for ORR. At 60°C in acid, the hard-magnet L10-CoPt better stabilizes Co (5% loss after 24 hr) than soft-magnet A1-CoPt (34% loss in 7 hr). L10-CoPt/Pt achieves mass activities (MA) of 0.56 A/mgPt initially and 0.45 A/mgPt after 30,000 voltage cycles in the membrane electrode assembly at 80°C, exceeding the DOE 2020 targets on Pt activity and durability (0.44 A/mgPt in MA and <40% loss in MA after 30,000 cycles). Lastly, density functional theory calculations suggest that the ligand effect of Co and the biaxial strain (-4.50%/-4.25%) of the Pt shell weaken the binding of oxygenated species, leading to enhanced ORR performance in fuel cells.},
doi = {10.1016/j.joule.2018.09.016},
journal = {Joule},
number = 1,
volume = 3,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2019},
month = {Tue Jan 01 00:00:00 EST 2019}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1016/j.joule.2018.09.016
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Cited by: 206 works
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Figures / Tables:

Figure 1 Figure 1: A, TEM image of as-synthesized CoPt NPs with “cashew”-like shape. B, C-CoPt NPs after annealing treatment with “spherical” shape, as indicated by the circles. C, XRD patterns of as-synthesized CoPt NPs (A1CoPt), C-CoPt NPs annealed at 650°C for 6 h ($f$-L10-CoPt) and 1 h ($p$-L10CoPt), respectively. D, Magneticmore » hysteresis loops of C-CoPt NPs annealed 650°C for 6 h ($f$-L10-CoPt) and 1 h ($p$-L10-CoPt), respectively.« less
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Works referencing / citing this record:

Achievements, challenges and perspectives on cathode catalysts in proton exchange membrane fuel cells for transportation
journal, July 2019

Achievements, challenges and perspectives on cathode catalysts in proton exchange membrane fuel cells for transportation
journal, July 2019

Sub‐3 nm Intermetallic Ordered Pt 3 In Clusters for Oxygen Reduction Reaction
journal, November 2019

Tungsten‐Doped L1 0 ‐PtCo Ultrasmall Nanoparticles as a High‐Performance Fuel Cell Cathode
journal, September 2019

Tungsten‐Doped L1 0 ‐PtCo Ultrasmall Nanoparticles as a High‐Performance Fuel Cell Cathode
journal, October 2019

  • Liang, Jiashun; Li, Na; Zhao, Zhonglong
  • Angewandte Chemie International Edition, Vol. 58, Issue 43
  • DOI: 10.1002/anie.201908824

Chemical Synthesis of Magnetic Nanoparticles for Permanent Magnet Applications
journal, October 2019

Optimizing PtFe intermetallics for oxygen reduction reaction: from DFT screening to in situ XAFS characterization
journal, January 2019

  • Gong, Mingxing; Zhu, Jing; Liu, Mingjie
  • Nanoscale, Vol. 11, Issue 42
  • DOI: 10.1039/c9nr04975d

Monodisperse nanoparticles for catalysis and nanomedicine
journal, January 2019

  • Muzzio, Michelle; Li, Junrui; Yin, Zhouyang
  • Nanoscale, Vol. 11, Issue 41
  • DOI: 10.1039/c9nr06080d

Synthesis of PtCoNiRu/C nanoparticles by spray drying combined with reduction sintering for methanol electro-oxidation
journal, January 2020

  • Yao, Chensiqi; Xu, Hao; Li, Anjin
  • RSC Advances, Vol. 10, Issue 6
  • DOI: 10.1039/c9ra09764c

Highly stable Pt 3 Ni nanowires tailored with trace Au for the oxygen reduction reaction
journal, January 2019

  • Wu, Zhifu; Su, Ya-Qiong; Hensen, Emiel J. M.
  • Journal of Materials Chemistry A, Vol. 7, Issue 46
  • DOI: 10.1039/c9ta08682j
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