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Title: Au-Doped Stable L1 0 Structured Platinum Cobalt Ordered Intermetallic Nanoparticle Catalysts for Enhanced Electrocatalysis

Abstract

Bimetallic Pt3Co alloys are the commercial electrocatalysts for the oxygen reduction reaction in a fuel cell, but their high Pt loading and durability are a concern. Working toward the goal of reducing the amount of Pt and simultaneously increasing the activity and stability of the catalyst, we describe two new structures of ordered intermetallics consisting of Pt4Co5 nanocatalyst protected by Au atoms. Varying the temperature for the formation of the intermetallics, two distinct PtCo structural characteristics were observed in the nanoparticles: one with a simple intermetallic structure and the other with an intermetallic structure core protected by a shell of Pt atoms. Finally, the improved electrocatalytic activity and durability are attributed to the atomically ordered structure of PtCo nanoparticles along with protective surface Au atoms as confirmed by density functional theory (DFT) calculations and experimental results.

Authors:
 [1];  [2];  [3];  [4];  [4];  [3]; ORCiD logo [5]; ORCiD logo [4]; ORCiD logo [4];  [6];  [4]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; Columbia Univ., New York, NY (United States). Dept. of Chemical Engineering
  2. Columbia Univ., New York, NY (United States). Dept. of Chemical Engineering
  3. Brookhaven National Lab. (BNL), Dept. of Condensed Matter Physics and Materials Science
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; Korean Inst. of Energy Research, Daejeon (South Korea). Fuel Cell Lab.
  6. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; Columbia Univ., New York , NY (United States). Dept. of Chemical Engineering
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1544237
Grant/Contract Number:  
20158520030830; SC0012704; FG02-13ER16381; AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Energy Materials
Additional Journal Information:
Journal Volume: 1; Journal Issue: 8; Journal ID: ISSN 2574-0962
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; electrocatalysis; fuel cells; intermetallics; core-shell nanoparticles; oxygen reduction reaction

Citation Formats

Kuttiyiel, Kurian A., Kattel, Shyam, Cheng, Shaobo, Lee, Ji Hoon, Wu, Lijun, Zhu, Yimei, Park, Gu-Gon, Liu, Ping, Sasaki, Kotaro, Chen, Jingguang G., and Adzic, Radoslav R. Au-Doped Stable L1 0 Structured Platinum Cobalt Ordered Intermetallic Nanoparticle Catalysts for Enhanced Electrocatalysis. United States: N. p., 2018. Web. doi:10.1021/acsaem.8b00555.
Kuttiyiel, Kurian A., Kattel, Shyam, Cheng, Shaobo, Lee, Ji Hoon, Wu, Lijun, Zhu, Yimei, Park, Gu-Gon, Liu, Ping, Sasaki, Kotaro, Chen, Jingguang G., & Adzic, Radoslav R. Au-Doped Stable L1 0 Structured Platinum Cobalt Ordered Intermetallic Nanoparticle Catalysts for Enhanced Electrocatalysis. United States. https://doi.org/10.1021/acsaem.8b00555
Kuttiyiel, Kurian A., Kattel, Shyam, Cheng, Shaobo, Lee, Ji Hoon, Wu, Lijun, Zhu, Yimei, Park, Gu-Gon, Liu, Ping, Sasaki, Kotaro, Chen, Jingguang G., and Adzic, Radoslav R. 2018. "Au-Doped Stable L1 0 Structured Platinum Cobalt Ordered Intermetallic Nanoparticle Catalysts for Enhanced Electrocatalysis". United States. https://doi.org/10.1021/acsaem.8b00555. https://www.osti.gov/servlets/purl/1544237.
@article{osti_1544237,
title = {Au-Doped Stable L1 0 Structured Platinum Cobalt Ordered Intermetallic Nanoparticle Catalysts for Enhanced Electrocatalysis},
author = {Kuttiyiel, Kurian A. and Kattel, Shyam and Cheng, Shaobo and Lee, Ji Hoon and Wu, Lijun and Zhu, Yimei and Park, Gu-Gon and Liu, Ping and Sasaki, Kotaro and Chen, Jingguang G. and Adzic, Radoslav R.},
abstractNote = {Bimetallic Pt3Co alloys are the commercial electrocatalysts for the oxygen reduction reaction in a fuel cell, but their high Pt loading and durability are a concern. Working toward the goal of reducing the amount of Pt and simultaneously increasing the activity and stability of the catalyst, we describe two new structures of ordered intermetallics consisting of Pt4Co5 nanocatalyst protected by Au atoms. Varying the temperature for the formation of the intermetallics, two distinct PtCo structural characteristics were observed in the nanoparticles: one with a simple intermetallic structure and the other with an intermetallic structure core protected by a shell of Pt atoms. Finally, the improved electrocatalytic activity and durability are attributed to the atomically ordered structure of PtCo nanoparticles along with protective surface Au atoms as confirmed by density functional theory (DFT) calculations and experimental results.},
doi = {10.1021/acsaem.8b00555},
url = {https://www.osti.gov/biblio/1544237}, journal = {ACS Applied Energy Materials},
issn = {2574-0962},
number = 8,
volume = 1,
place = {United States},
year = {Wed Aug 01 00:00:00 EDT 2018},
month = {Wed Aug 01 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
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Citation Metrics:
Cited by: 15 works
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Figures / Tables:

Figure 1 Figure 1: XRD patterns of AuPtCo/C NPs with its zoomed-up profiles in the inset. Also shown is a schematic of the L10 PtCo ordered-intermetallic structure.

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Works referencing / citing this record:

Facile fabrication of bimetallic Cu–Ag binary hybrid nanoparticles and their application in catalysis
journal, January 2019


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.