| Publication type: | Article in scientific journal |
| Type of review: | Peer review (publication) |
| Title: | Nickel agglomeration in solid oxide fuel cells : the influence of temperature |
| Authors: | Iwanschitz, Boris Holzer, Lorenz Mai, Andreas Schütze, Michael |
| DOI: | 10.1016/j.ssi.2012.01.015 |
| Published in: | Solid State Ionics |
| Volume(Issue): | 211 |
| Page(s): | 69 |
| Pages to: | 73 |
| Issue Date: | Mar-2012 |
| Publisher / Ed. Institution: | Elsevier |
| Publisher / Ed. Institution: | Amsterdam |
| ISSN: | 0167-2738 1872-7689 |
| Language: | English |
| Subject (DDC): | 621.3: Electrical, communications, control engineering |
| Abstract: | Ni/CG40-cermet anodes with two different ratios of nickel and ceria-gadolinia-oxide were exposed to seven different reduction temperatures between 555°C and 1140°C. For each reduction temperature one sample was analysed by scanning electron microscopy. The continuous particle size distributions were determined from the images. Significant nickel particle growth occurred above a reduction temperature of 850°C for both anodes. The T-dependent nickel particle growth in the range of several initial particle radii could be fitted well with an Arrhenius type equation. However, no clear trend was obtained for the activation energy of the nickel agglomeration as a function of the initial particle sizes and the Ni/CG40 ratio. This lack of systematic trend may indicate competing material transport mechanisms such as diffusion and/or evaporation/condensation. For Ni/CG40 anodes with higher metallic content, nickel agglomeration was more pronounced for reduction temperatures above 950°C. Besides the nickel, the ceria-gadolinia-oxide showed an increase in particle size at reduction temperatures above 950°C as well. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/2206 |
| Fulltext version: | Published version |
| License (according to publishing contract): | Licence according to publishing contract |
| Departement: | School of Engineering |
| Organisational Unit: | Institute of Computational Physics (ICP) |
| Appears in collections: | Publikationen School of Engineering |
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Iwanschitz, B., Holzer, L., Mai, A., & Schütze, M. (2012). Nickel agglomeration in solid oxide fuel cells : the influence of temperature. Solid State Ionics, 211, 69–73. https://doi.org/10.1016/j.ssi.2012.01.015
Iwanschitz, B. et al. (2012) ‘Nickel agglomeration in solid oxide fuel cells : the influence of temperature’, Solid State Ionics, 211, pp. 69–73. Available at: https://doi.org/10.1016/j.ssi.2012.01.015.
B. Iwanschitz, L. Holzer, A. Mai, and M. Schütze, “Nickel agglomeration in solid oxide fuel cells : the influence of temperature,” Solid State Ionics, vol. 211, pp. 69–73, Mar. 2012, doi: 10.1016/j.ssi.2012.01.015.
IWANSCHITZ, Boris, Lorenz HOLZER, Andreas MAI und Michael SCHÜTZE, 2012. Nickel agglomeration in solid oxide fuel cells : the influence of temperature. Solid State Ionics. März 2012. Bd. 211, S. 69–73. DOI 10.1016/j.ssi.2012.01.015
Iwanschitz, Boris, Lorenz Holzer, Andreas Mai, and Michael Schütze. 2012. “Nickel Agglomeration in Solid Oxide Fuel Cells : The Influence of Temperature.” Solid State Ionics 211 (March): 69–73. https://doi.org/10.1016/j.ssi.2012.01.015.
Iwanschitz, Boris, et al. “Nickel Agglomeration in Solid Oxide Fuel Cells : The Influence of Temperature.” Solid State Ionics, vol. 211, Mar. 2012, pp. 69–73, https://doi.org/10.1016/j.ssi.2012.01.015.
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