A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid
BaZr0.4Ce0.4Y0.2O3-delta (BZCY4) has been widely considered to be a promising electrolyte material for H+ - SOFC, but it is restricted to commercial applications due to its poor densification behavior. A dense BZCY4 pellet was obtained by sintering at 1250 degree Celcius after impregnating the mater...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Elsevier B.V
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/18983 |
| _version_ | 1848749903377858560 |
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| author | Liu, Y. Guo, Y. Ran, R. Shao, Zongping |
| author_facet | Liu, Y. Guo, Y. Ran, R. Shao, Zongping |
| author_sort | Liu, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | BaZr0.4Ce0.4Y0.2O3-delta (BZCY4) has been widely considered to be a promising electrolyte material for H+ - SOFC, but it is restricted to commercial applications due to its poor densification behavior. A dense BZCY4 pellet was obtained by sintering at 1250 degree Celcius after impregnating the material with a zinc nitrate solution.The dilatometer curves and scanning electron microscopy (SEM) images indicated that the sinterability of the BZCY4 material is effectively improved by impregnating the green membrane with 4wt% Zn. Moreover, EDX mapping indicated that the Ba, Zr and Ce elements were homogeneously distributed in the BZCY4+4 wt%Zn sample sintered at 1250 degree Celcius . In addition, an integrated SOFC employing a BZCY4+4 wt% Zn electrolyte was successfully fabricated without any cracks and delamination by impregnating the BZCY4 electrolyte membrane with zinc nitrate as a sintering aid. This single cell with a 25mm thick BZCY4+4 wt% Zn electrolyte membrane exhibited power densities as high as 360 and 276 mWcm-2 at 700 and 600 degree Celcius , respectively. Electrical conductivity measurements demonstrated that the total conductivities of BZCY4+4 wt% Zn were 0.46*10-2 S cm-1, 0.56*10-2 S cm-1,0.20*10-2 S cm-1 and 0.40*10-2 S cm-1 at 600 degree Celcius in air, wet air,10% H2–Ar and wet 10% H2–Ar, respectively. |
| first_indexed | 2025-11-14T07:28:20Z |
| format | Journal Article |
| id | curtin-20.500.11937-18983 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:28:20Z |
| publishDate | 2013 |
| publisher | Elsevier B.V |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-189832017-02-28T01:35:23Z A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid Liu, Y. Guo, Y. Ran, R. Shao, Zongping Sintering aid Impregnation Zinc nitrate Solid oxide fuel cells Proton conductor BaZr0.4Ce0.4Y0.2O3-delta (BZCY4) has been widely considered to be a promising electrolyte material for H+ - SOFC, but it is restricted to commercial applications due to its poor densification behavior. A dense BZCY4 pellet was obtained by sintering at 1250 degree Celcius after impregnating the material with a zinc nitrate solution.The dilatometer curves and scanning electron microscopy (SEM) images indicated that the sinterability of the BZCY4 material is effectively improved by impregnating the green membrane with 4wt% Zn. Moreover, EDX mapping indicated that the Ba, Zr and Ce elements were homogeneously distributed in the BZCY4+4 wt%Zn sample sintered at 1250 degree Celcius . In addition, an integrated SOFC employing a BZCY4+4 wt% Zn electrolyte was successfully fabricated without any cracks and delamination by impregnating the BZCY4 electrolyte membrane with zinc nitrate as a sintering aid. This single cell with a 25mm thick BZCY4+4 wt% Zn electrolyte membrane exhibited power densities as high as 360 and 276 mWcm-2 at 700 and 600 degree Celcius , respectively. Electrical conductivity measurements demonstrated that the total conductivities of BZCY4+4 wt% Zn were 0.46*10-2 S cm-1, 0.56*10-2 S cm-1,0.20*10-2 S cm-1 and 0.40*10-2 S cm-1 at 600 degree Celcius in air, wet air,10% H2–Ar and wet 10% H2–Ar, respectively. 2013 Journal Article http://hdl.handle.net/20.500.11937/18983 Elsevier B.V restricted |
| spellingShingle | Sintering aid Impregnation Zinc nitrate Solid oxide fuel cells Proton conductor Liu, Y. Guo, Y. Ran, R. Shao, Zongping A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid |
| title | A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid |
| title_full | A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid |
| title_fullStr | A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid |
| title_full_unstemmed | A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid |
| title_short | A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid |
| title_sort | novel approach for substantially improving the sinterability of bazr0.4ce0.4y0.2o3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid |
| topic | Sintering aid Impregnation Zinc nitrate Solid oxide fuel cells Proton conductor |
| url | http://hdl.handle.net/20.500.11937/18983 |