Electrochemical characterisation of solid oxide cell electrodes for hydrogen production

Bernuy-Lopez, Carlos, Knibbe, Ruth, He, Zeming, Mao, Xiaojian, Hauch, Anne and Nielsen, Karsten A. (2011). Electrochemical characterisation of solid oxide cell electrodes for hydrogen production. In: Spanish National Congress of Fuel Cells (CONAPPICE 2010), Spain, (4396-4403). 2010. doi:10.1016/j.jpowsour.2010.10.102

Author Bernuy-Lopez, Carlos
Knibbe, Ruth
He, Zeming
Mao, Xiaojian
Hauch, Anne
Nielsen, Karsten A.
Title of paper Electrochemical characterisation of solid oxide cell electrodes for hydrogen production
Conference name Spanish National Congress of Fuel Cells (CONAPPICE 2010)
Conference location Spain
Conference dates 2010
Journal name Journal of Power Sources   Check publisher's open access policy
Place of Publication Amsterdam, Netherlands
Publisher Elsevier
Publication Year 2011
Sub-type Fully published paper
DOI 10.1016/j.jpowsour.2010.10.102
Open Access Status Not yet assessed
ISSN 0378-7753
Volume 196
Issue 9
Start page 4396
End page 4403
Total pages 8
Language eng
Formatted Abstract/Summary
Oxygen electrodes and steam electrodes are designed and tested to develop improved solid oxide electrolysis cells for H2 production with the cell support on the oxygen electrode. The electrode performance is evaluated by impedance spectroscopy testing of symmetric cells at open circuit voltage (OCV) in a one-atmosphere set-up. For the oxygen electrode, nano-structured La 0.75Sr0.25MnO3 (LSM25) is impregnated into a LSM25/yttria stabilised zirconia (YSZ) composite, whereas for the steam electrode, nano-structured Ni and Ce0.8Gd0.2O 2-δ (CGO) is impregnated into a Sr0.94Ti 0.9Nb0.10O3-δ (STN) backbone. In the present study, the best performing oxygen electrode is a LSM25-YSZ composite with 20% porosity and impregnated with a LSM25 solution measuring a polarisation resistance (Rp) of 0.12 Ω cm2 at 850 °C in oxygen. For the steam electrode, the best performance is obtained for a STN backbone, sintered at 1200 °C and impregnated with CGO/Ni, with an R p of 0.08 Ω cm2 at 850 °C in 3% H 2O/H2.
Keyword Solid oxide cells
Impedance spectroscopy
Lanthanum strontium manganite
Yttria stabilised zirconia
Strontium titanate
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
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