Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 20, 2013
Previous Article Next Article

Highly functional nano-scale stabilized bismuth oxides via reverse strike co-precipitation for solid oxide fuel cells

Author affiliations

Abstract

Nano-scale erbia stabilized bismuth oxides (ESBs) were successfully synthesized by a wet chemical reverse strike co-precipitation. Due to homogenous, molecular level mixing, the desired cubic fluorite structure was formed at a dramatically reduced temperature of 500 °C, which was confirmed by X-ray diffraction and Raman spectroscopy. Moreover, this low calcine temperature led to nano-scale ESB powders with a crystallite size of ∼20 nm and a specific surface area of ∼13.2 m2 g−1. Due to the high surface area, the nano-sized ESB powders show high functionality for solid oxide fuel cell (SOFC) applications. As an SOFC electrolyte, the high sinterability of the co-precipitated ESB was demonstrated, achieving over 98% density after sintering at only 750 °C for 30 min. Moreover, the total conductivity of the sample was identical to that obtained by conventional methods after sintering at 890 °C (for 16 h), regardless of the different grain boundary densities. In addition, the co-precipitated ESB was used in a composite cathode with lanthanum strontium manganite (LSM), achieving significantly reduced cathodic ASRs, 0.55 and 0.03 Ω cm2, at 550 and 700 °C by extending triple phase boundary (TPB) lengths in the cathode bulk and at the cathode–electrolyte interface.

Graphical abstract: Highly functional nano-scale stabilized bismuth oxides via reverse strike co-precipitation for solid oxide fuel cells

Back to tab navigation

Article information


Submitted
05 Feb 2013
Accepted
20 Mar 2013
First published
21 Mar 2013

J. Mater. Chem. A, 2013,1, 6199-6207
Article type
Paper

Highly functional nano-scale stabilized bismuth oxides via reverse strike co-precipitation for solid oxide fuel cells

K. T. Lee, A. A. Lidie, S. Y. Jeon, G. T. Hitz, S. J. Song and E. D. Wachsman, J. Mater. Chem. A, 2013, 1, 6199
DOI: 10.1039/C3TA10570A

Social activity

Search articles by author

Spotlight

Advertisements