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Title: Nickel–copper supported on a carbon black hydrogen oxidation catalyst integrated into an anion-exchange membrane fuel cell

Abstract

This work introduces the first practical platinum group metal-free (PGM-free) electrocatalyst for hydrogen oxidation reaction (HOR) in alkaline membrane fuel cells (AMFC), based on nickel-rich Ni 95Cu 5-alloy nanoparticles supported on Ketjenblack (KB) family carbon blacks. The catalyst synthesis is scalable and results in expected true alloy of NiCu, which is thoroughly characterized by XRD, microscopy and XPS. Reactivity of the catalyst towards HOR is studied by cyclic voltammetry and explained in view of its composition and structure. This catalyst showed highest specific activity compared to previously reported NiCu electrocatalysts and was successfully integrated into an AMFC membrane electrode assembly (MEA) using commercially available state-of-the-art membrane and ionomer. Single MEA fuel cell tests have demonstrated power density of 350 mWcm -2 at 80°C, which sets a technical record for a PGM-free anode in realistic operating conditions. The MEA with NiCu/KB anode catalysts layer were evaluated by in situ nano- and operando micro-X-ray computed tomography (CT) and results suggest that the nickel state in NiCu is hydrophobic in nature, where the NiCu surface may be isostructural with β-Ni(OH) 2. The hydrophobic nature of electrocatalyst allows for improved water distribution in MEA and overall fuel cell as observed with operando micro X-raymore » CT.« less

Authors:
 [1];  [1];  [2];  [2];  [3];  [1];  [1];  [1]
  1. Univ. of New Mexico, Albuquerque, NM (United States)
  2. Tufts Univ., Medford, MA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1508978
Alternate Identifier(s):
OSTI ID: 1463749
Grant/Contract Number:  
AC02-06CH11357; EE0006962
Resource Type:
Accepted Manuscript
Journal Name:
Sustainable Energy & Fuels
Additional Journal Information:
Journal Volume: 2; Journal Issue: 10; Journal ID: ISSN 2398-4902
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Roy, Aaron, Talarposhti, Morteza R., Normile, Stanley J., Zenyuk, Iryna V., De Andrade, Vincent, Artyushkova, Kateryna, Serov, Alexey, and Atanassov, Plamen. Nickel–copper supported on a carbon black hydrogen oxidation catalyst integrated into an anion-exchange membrane fuel cell. United States: N. p., 2018. Web. doi:10.1039/c8se00261d.
Roy, Aaron, Talarposhti, Morteza R., Normile, Stanley J., Zenyuk, Iryna V., De Andrade, Vincent, Artyushkova, Kateryna, Serov, Alexey, & Atanassov, Plamen. Nickel–copper supported on a carbon black hydrogen oxidation catalyst integrated into an anion-exchange membrane fuel cell. United States. doi:10.1039/c8se00261d.
Roy, Aaron, Talarposhti, Morteza R., Normile, Stanley J., Zenyuk, Iryna V., De Andrade, Vincent, Artyushkova, Kateryna, Serov, Alexey, and Atanassov, Plamen. Fri . "Nickel–copper supported on a carbon black hydrogen oxidation catalyst integrated into an anion-exchange membrane fuel cell". United States. doi:10.1039/c8se00261d. https://www.osti.gov/servlets/purl/1508978.
@article{osti_1508978,
title = {Nickel–copper supported on a carbon black hydrogen oxidation catalyst integrated into an anion-exchange membrane fuel cell},
author = {Roy, Aaron and Talarposhti, Morteza R. and Normile, Stanley J. and Zenyuk, Iryna V. and De Andrade, Vincent and Artyushkova, Kateryna and Serov, Alexey and Atanassov, Plamen},
abstractNote = {This work introduces the first practical platinum group metal-free (PGM-free) electrocatalyst for hydrogen oxidation reaction (HOR) in alkaline membrane fuel cells (AMFC), based on nickel-rich Ni95Cu5-alloy nanoparticles supported on Ketjenblack (KB) family carbon blacks. The catalyst synthesis is scalable and results in expected true alloy of NiCu, which is thoroughly characterized by XRD, microscopy and XPS. Reactivity of the catalyst towards HOR is studied by cyclic voltammetry and explained in view of its composition and structure. This catalyst showed highest specific activity compared to previously reported NiCu electrocatalysts and was successfully integrated into an AMFC membrane electrode assembly (MEA) using commercially available state-of-the-art membrane and ionomer. Single MEA fuel cell tests have demonstrated power density of 350 mWcm-2 at 80°C, which sets a technical record for a PGM-free anode in realistic operating conditions. The MEA with NiCu/KB anode catalysts layer were evaluated by in situ nano- and operando micro-X-ray computed tomography (CT) and results suggest that the nickel state in NiCu is hydrophobic in nature, where the NiCu surface may be isostructural with β-Ni(OH)2. The hydrophobic nature of electrocatalyst allows for improved water distribution in MEA and overall fuel cell as observed with operando micro X-ray CT.},
doi = {10.1039/c8se00261d},
journal = {Sustainable Energy & Fuels},
number = 10,
volume = 2,
place = {United States},
year = {2018},
month = {7}
}

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Works referenced in this record:

Anion exchange membranes for alkaline fuel cells: A review
journal, July 2011

  • Merle, Géraldine; Wessling, Matthias; Nijmeijer, Kitty
  • Journal of Membrane Science, Vol. 377, Issue 1-2, p. 1-35
  • DOI: 10.1016/j.memsci.2011.04.043

Anion-exchange membranes in electrochemical energy systems
journal, January 2014

  • Varcoe, John R.; Atanassov, Plamen; Dekel, Dario R.
  • Energy & Environmental Science, Vol. 7, Issue 10, p. 3135-3191
  • DOI: 10.1039/C4EE01303D

Interfacial processes involving electrocatalytic evolution and oxidation of H2, and the role of chemisorbed H
journal, August 2002