Abstract
| Original language | English |
|---|---|
| Journal | International Journal of Applied Ceramic Technology |
| Volume | 15 |
| Issue number | 4 |
| Pages (from-to) | 1011-1022 |
| ISSN | 1546-542X |
| DOIs | |
| Publication status | Published - 2018 |
Keywords
- Solid oxide fuel cell
- Glass-ceramics
- Synthesis
- Thermal analysis
Cite this
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A Ba-free sealing glass with a high CTE and excellent interface stability optimized for SOFC/SOEC stack applications. / Ritucci, Ilaria; Agersted, Karsten; Zielke, Philipp; Wulff, Anders Christian; Khajavi, Peyman; Smeacetto, Federico; Sabato, Antonio G.; Kiebach, Ragnar.
In: International Journal of Applied Ceramic Technology, Vol. 15, No. 4, 2018, p. 1011-1022.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - A Ba-free sealing glass with a high CTE and excellent interface stability optimized for SOFC/SOEC stack applications
AU - Ritucci, Ilaria
AU - Agersted, Karsten
AU - Zielke, Philipp
AU - Wulff, Anders Christian
AU - Khajavi, Peyman
AU - Smeacetto, Federico
AU - Sabato, Antonio G.
AU - Kiebach, Ragnar
PY - 2018
Y1 - 2018
N2 - A new glass-ceramic composition containing Si, Mg, Ca, Na, Al, Zr and B is presented here as sealant for planar SOFCs/SOECs, with the aim of joining the metallic interconnect (Crofer22APU) to the solid oxide cell (YSZ electrolyte or CGO barrier layer). Characteristic temperature, thermo-mechanical properties and compositional variations are reviewed and discussed by thermal analyses and in situ XRD, in order to design and optimize the sealing profile and reduce the residual porosity. The glass after heat treatment partially devitrifies into augite and nepheline with residual glass phase of around 64.3%; after crystallization the glass-ceramic sealant has a CTE of 12.8 x 10-6 K −1 and it is compliant with the other materials typically used for stack components.. This work shows that the developed glass-ceramic can successfully join the ceramic cell with the Crofer22APU (pre-oxidized and alumina coating), proven by tests on small and large-scale samples. No signs of unwanted reactions at the glass-metal and the glass-cell interface are observed and sufficient gas tightness is achieved.
AB - A new glass-ceramic composition containing Si, Mg, Ca, Na, Al, Zr and B is presented here as sealant for planar SOFCs/SOECs, with the aim of joining the metallic interconnect (Crofer22APU) to the solid oxide cell (YSZ electrolyte or CGO barrier layer). Characteristic temperature, thermo-mechanical properties and compositional variations are reviewed and discussed by thermal analyses and in situ XRD, in order to design and optimize the sealing profile and reduce the residual porosity. The glass after heat treatment partially devitrifies into augite and nepheline with residual glass phase of around 64.3%; after crystallization the glass-ceramic sealant has a CTE of 12.8 x 10-6 K −1 and it is compliant with the other materials typically used for stack components.. This work shows that the developed glass-ceramic can successfully join the ceramic cell with the Crofer22APU (pre-oxidized and alumina coating), proven by tests on small and large-scale samples. No signs of unwanted reactions at the glass-metal and the glass-cell interface are observed and sufficient gas tightness is achieved.
KW - Solid oxide fuel cell
KW - Glass-ceramics
KW - Synthesis
KW - Thermal analysis
U2 - 10.1111/ijac.12853
DO - 10.1111/ijac.12853
M3 - Journal article
VL - 15
SP - 1011
EP - 1022
JO - International Journal of Applied Ceramic Technology
JF - International Journal of Applied Ceramic Technology
SN - 1546-542X
IS - 4
ER -