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Title: Nanoparticle scaffolds for syngas-fed solid oxide fuel cells

Abstract

Incorporation of nanoparticles into devices such as solid oxide fuel cells (SOFCs) may provide benefits such as higher surface areas or finer control over microstructure. However, their use with traditional fabrication techniques such as screen-printing is problematic. Here, we show that mixing larger commercial particles with nanoparticles allows traditional ink formulation and screen-printing to be used while still providing benefits of nanoparticles such as increased porosity and lower sintering temperatures. SOFC anodes were produced by impregnating ceria–gadolinia (CGO) scaffolds with nickel nitrate solution. The scaffolds were produced from inks containing a mixture of hydrothermally-synthesised nanoparticle CGO, commercial CGO and polymeric pore formers. The scaffolds were heat-treated at either 1000 or 1300 °C, and were mechanically stable. In situ ultra-small X-ray scattering (USAXS) shows that the nanoparticles begin sintering around 900–1000 °C. Analysis by USAXS and scanning electron microscopy (SEM) revealed that the low temperature heat-treated scaffolds possessed higher porosity. Impregnated scaffolds were used to produce symmetrical cells, with the lower temperature heat-treated scaffolds showing improved gas diffusion, but poorer charge transfer. Using these scaffolds, lower temperature heat-treated cells of Ni–CGO/200 μm YSZ/CGO-LSCF performed better at 700 °C (and below) in hydrogen, and performed better at all temperatures using syngas, withmore » power densities of up to 0.15 W cm -2 at 800 °C. This approach has the potential to allow the use of a wider range of materials and finer control over microstructure.« less

Authors:
 [1];  [1];  [1];  [1];  [2];  [3];  [4];  [2];  [1]
  1. Imperial College London, London (United Kingdom). Dept. of Earth Science & Engineering
  2. Imperial College London, London (United Kingdom). Dept. of Chemistry
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Div.
  4. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Div.
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Materials Sciences and Engineering Division
OSTI Identifier:
1391637
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. A
Additional Journal Information:
Journal Volume: 3; Journal Issue: 6; 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; 30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Boldrin, Paul, Ruiz-Trejo, Enrique, Yu, Jingwen, Gruar, Robert I., Tighe, Christopher J., Chang, Kee-Chul, Ilavsky, Jan, Darr, Jawwad A., and Brandon, Nigel. Nanoparticle scaffolds for syngas-fed solid oxide fuel cells. United States: N. p., 2014. Web. doi:10.1039/C4TA06029F.
Boldrin, Paul, Ruiz-Trejo, Enrique, Yu, Jingwen, Gruar, Robert I., Tighe, Christopher J., Chang, Kee-Chul, Ilavsky, Jan, Darr, Jawwad A., & Brandon, Nigel. Nanoparticle scaffolds for syngas-fed solid oxide fuel cells. United States. doi:10.1039/C4TA06029F.
Boldrin, Paul, Ruiz-Trejo, Enrique, Yu, Jingwen, Gruar, Robert I., Tighe, Christopher J., Chang, Kee-Chul, Ilavsky, Jan, Darr, Jawwad A., and Brandon, Nigel. Wed . "Nanoparticle scaffolds for syngas-fed solid oxide fuel cells". United States. doi:10.1039/C4TA06029F. https://www.osti.gov/servlets/purl/1391637.
@article{osti_1391637,
title = {Nanoparticle scaffolds for syngas-fed solid oxide fuel cells},
author = {Boldrin, Paul and Ruiz-Trejo, Enrique and Yu, Jingwen and Gruar, Robert I. and Tighe, Christopher J. and Chang, Kee-Chul and Ilavsky, Jan and Darr, Jawwad A. and Brandon, Nigel},
abstractNote = {Incorporation of nanoparticles into devices such as solid oxide fuel cells (SOFCs) may provide benefits such as higher surface areas or finer control over microstructure. However, their use with traditional fabrication techniques such as screen-printing is problematic. Here, we show that mixing larger commercial particles with nanoparticles allows traditional ink formulation and screen-printing to be used while still providing benefits of nanoparticles such as increased porosity and lower sintering temperatures. SOFC anodes were produced by impregnating ceria–gadolinia (CGO) scaffolds with nickel nitrate solution. The scaffolds were produced from inks containing a mixture of hydrothermally-synthesised nanoparticle CGO, commercial CGO and polymeric pore formers. The scaffolds were heat-treated at either 1000 or 1300 °C, and were mechanically stable. In situ ultra-small X-ray scattering (USAXS) shows that the nanoparticles begin sintering around 900–1000 °C. Analysis by USAXS and scanning electron microscopy (SEM) revealed that the low temperature heat-treated scaffolds possessed higher porosity. Impregnated scaffolds were used to produce symmetrical cells, with the lower temperature heat-treated scaffolds showing improved gas diffusion, but poorer charge transfer. Using these scaffolds, lower temperature heat-treated cells of Ni–CGO/200 μm YSZ/CGO-LSCF performed better at 700 °C (and below) in hydrogen, and performed better at all temperatures using syngas, with power densities of up to 0.15 W cm-2 at 800 °C. This approach has the potential to allow the use of a wider range of materials and finer control over microstructure.},
doi = {10.1039/C4TA06029F},
journal = {Journal of Materials Chemistry. A},
number = 6,
volume = 3,
place = {United States},
year = {2014},
month = {12}
}

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Cited by: 6 works
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Works referenced in this record:

Inorganic membranes for hydrogen production and purification: A critical review and perspective
journal, October 2007

  • Lu, G. Q.; Diniz da Costa, J. C.; Duke, M.
  • Journal of Colloid and Interface Science, Vol. 314, Issue 2, p. 589-603
  • DOI: 10.1016/j.jcis.2007.05.067