Abstract
| Original language | English |
|---|---|
| Journal | Journal of the European Ceramic Society |
| Volume | 38 |
| Issue number | 7 |
| Pages (from-to) | 2677-2686 |
| ISSN | 0955-2219 |
| DOIs | |
| Publication status | Published - 2018 |
Keywords
- Nanofiber
- Electrospinning
- Solid oxide fuel cell (SOFC)
- La1-xSrxCo1-yFeyO3-δ (LSCF)
- Sol-gel synthesis
Cite this
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La0.6Sr0.4Co0.2Fe0.8O3-δ nanofiber cathode for intermediate-temperature solid oxide fuel cells by water-based sol-gel electrospinning: Synthesis and electrochemical behaviour. / Enrico, Anna; Zhang, Wenjing (Angela); Traulsen, Marie Lund; Sala, Elena Marzia; Costamagna, Paola; Holtappels, Peter.
In: Journal of the European Ceramic Society, Vol. 38, No. 7, 2018, p. 2677-2686.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - La0.6Sr0.4Co0.2Fe0.8O3-δ nanofiber cathode for intermediate-temperature solid oxide fuel cells by water-based sol-gel electrospinning: Synthesis and electrochemical behaviour
AU - Enrico, Anna
AU - Zhang, Wenjing (Angela)
AU - Traulsen, Marie Lund
AU - Sala, Elena Marzia
AU - Costamagna, Paola
AU - Holtappels, Peter
PY - 2018
Y1 - 2018
N2 - Water-based sol-gel electrospinning is employed to manufacture perovskite oxide La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) nanofiber cathodes for intermediate-temperature solid oxide fuel cells. LSCF fibrous scaffolds are synthesized through electrospinning of a sol-gel solution employing water as the only solvent. Morphological characterizations demonstrate that the LSCF fibers have highly crystalline structure with uniform elemental distribution. After heat treatment, the average fiber diameter is 250 nm and the porosity of the nanofiber tissue is 37.5 %. The heat treated LSCF nanofibers are applied directly onto a Ce0.9Gd0.1O1.95 (CGO) electrolyte disk to form a symmetrical cell. Electrochemical characterization is carried out through electrochemical impedance spectroscopy (EIS) in the temperature range 550 °C–950 °C, and reproducibility of the electrochemical performance for a series of cells is demonstrated. At 650 °C, the average measured polarization resistance Rp is 1.0 Ω cm2. Measured performance decay is 1 % during the first 33 h of operation at 750 °C, followed by an additional 0.7 % over the subsequent 70 h.
AB - Water-based sol-gel electrospinning is employed to manufacture perovskite oxide La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) nanofiber cathodes for intermediate-temperature solid oxide fuel cells. LSCF fibrous scaffolds are synthesized through electrospinning of a sol-gel solution employing water as the only solvent. Morphological characterizations demonstrate that the LSCF fibers have highly crystalline structure with uniform elemental distribution. After heat treatment, the average fiber diameter is 250 nm and the porosity of the nanofiber tissue is 37.5 %. The heat treated LSCF nanofibers are applied directly onto a Ce0.9Gd0.1O1.95 (CGO) electrolyte disk to form a symmetrical cell. Electrochemical characterization is carried out through electrochemical impedance spectroscopy (EIS) in the temperature range 550 °C–950 °C, and reproducibility of the electrochemical performance for a series of cells is demonstrated. At 650 °C, the average measured polarization resistance Rp is 1.0 Ω cm2. Measured performance decay is 1 % during the first 33 h of operation at 750 °C, followed by an additional 0.7 % over the subsequent 70 h.
KW - Nanofiber
KW - Electrospinning
KW - Solid oxide fuel cell (SOFC)
KW - La1-xSrxCo1-yFeyO3-δ (LSCF)
KW - Sol-gel synthesis
U2 - 10.1016/j.jeurceramsoc.2018.01.034
DO - 10.1016/j.jeurceramsoc.2018.01.034
M3 - Journal article
VL - 38
SP - 2677
EP - 2686
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 7
ER -