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Title: Core-Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reaction

Abstract

Abstract The development of core–shell structures remains a fundamental challenge for pure metallic aerogels. Here we report the synthesis of Pd x Au‐Pt core–shell aerogels composed of an ultrathin Pt shell and a composition‐tunable Pd x Au alloy core. The universality of this strategy ensures the extension of core compositions to Pd transition‐metal alloys. The core–shell aerogels exhibited largely improved Pt utilization efficiencies for the oxygen reduction reaction and their activities show a volcano‐type relationship as a function of the lattice parameter of the core substrate. The maximum mass and specific activities are 5.25 A mg Pt −1 and 2.53 mA cm −2 , which are 18.7 and 4.1 times higher than those of Pt/C, respectively, demonstrating the superiority of the core–shell metallic aerogels. The proposed core‐based activity descriptor provides a new possible strategy for the design of future core–shell electrocatalysts.

Authors:
 [1];  [2];  [3];  [4];  [3];  [4];  [3];  [5];  [3]; ORCiD logo [4]
  1. Technische Univ. Dresden (Germany); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Helmholtz-Zentrum Dresden-Rossendorf, (Germany)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Technische Univ. Dresden (Germany)
  5. Leibniz Inst. for Solid State and Materials Research (IFW), Dresden (Germany)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1425037
Alternate Identifier(s):
OSTI ID: 1419897
Report Number(s):
BNL-200018-2018-JAAM
Journal ID: ISSN 1433-7851
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 57; Journal Issue: 11; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY

Citation Formats

Cai, Bin, Hübner, René, Sasaki, Kotaro, Zhang, Yuanzhe, Su, Dong, Ziegler, Christoph, Vukmirovic, Miomir B., Rellinghaus, Bernd, Adzic, Radoslav R., and Eychmüller, Alexander. Core-Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reaction. United States: N. p., 2018. Web. doi:10.1002/anie.201710997.
Cai, Bin, Hübner, René, Sasaki, Kotaro, Zhang, Yuanzhe, Su, Dong, Ziegler, Christoph, Vukmirovic, Miomir B., Rellinghaus, Bernd, Adzic, Radoslav R., & Eychmüller, Alexander. Core-Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reaction. United States. https://doi.org/10.1002/anie.201710997
Cai, Bin, Hübner, René, Sasaki, Kotaro, Zhang, Yuanzhe, Su, Dong, Ziegler, Christoph, Vukmirovic, Miomir B., Rellinghaus, Bernd, Adzic, Radoslav R., and Eychmüller, Alexander. Thu . "Core-Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reaction". United States. https://doi.org/10.1002/anie.201710997. https://www.osti.gov/servlets/purl/1425037.
@article{osti_1425037,
title = {Core-Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reaction},
author = {Cai, Bin and Hübner, René and Sasaki, Kotaro and Zhang, Yuanzhe and Su, Dong and Ziegler, Christoph and Vukmirovic, Miomir B. and Rellinghaus, Bernd and Adzic, Radoslav R. and Eychmüller, Alexander},
abstractNote = {Abstract The development of core–shell structures remains a fundamental challenge for pure metallic aerogels. Here we report the synthesis of Pd x Au‐Pt core–shell aerogels composed of an ultrathin Pt shell and a composition‐tunable Pd x Au alloy core. The universality of this strategy ensures the extension of core compositions to Pd transition‐metal alloys. The core–shell aerogels exhibited largely improved Pt utilization efficiencies for the oxygen reduction reaction and their activities show a volcano‐type relationship as a function of the lattice parameter of the core substrate. The maximum mass and specific activities are 5.25 A mg Pt −1 and 2.53 mA cm −2 , which are 18.7 and 4.1 times higher than those of Pt/C, respectively, demonstrating the superiority of the core–shell metallic aerogels. The proposed core‐based activity descriptor provides a new possible strategy for the design of future core–shell electrocatalysts.},
doi = {10.1002/anie.201710997},
journal = {Angewandte Chemie (International Edition)},
number = 11,
volume = 57,
place = {United States},
year = {Thu Feb 08 00:00:00 EST 2018},
month = {Thu Feb 08 00:00:00 EST 2018}
}

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