Effect of Gd2O3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—A study on the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode
Boron volatility is one of the most important properties of borosilicate-based glass sealants in solid oxide fuel cells (SOFCs), as boron contaminants react with lanthanum-containing cathodes, forming LaBO3 and degrading the activity of SOFCs. Here, we report that the reaction between the volatile b...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier SA
2018
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| Online Access: | http://purl.org/au-research/grants/arc/DP150102025 http://hdl.handle.net/20.500.11937/67613 |
| _version_ | 1848761611989286912 |
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| author | Zhang, Q. Tan, S. Ren, M. Yang, H. Tang, D. Chen, K. Zhang, T. Jiang, San Ping |
| author_facet | Zhang, Q. Tan, S. Ren, M. Yang, H. Tang, D. Chen, K. Zhang, T. Jiang, San Ping |
| author_sort | Zhang, Q. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Boron volatility is one of the most important properties of borosilicate-based glass sealants in solid oxide fuel cells (SOFCs), as boron contaminants react with lanthanum-containing cathodes, forming LaBO3 and degrading the activity of SOFCs. Here, we report that the reaction between the volatile boron and a La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode during polarization can be significantly reduced by doping aluminoborosilicate glass with Gd2O3. Specifically, the Gd cations in glass with 2 mol.% Gd2O3 dissolve preferentially in the borate-rich environment to form more Gd-metaborate structures and promote the formation of calcium metaborate (CaB2O4); they also condense the B–O network after heat treatment, which suppresses poisoning by boron contaminants on the LSCF cathode. The results provide insights into design and development of a reliable sealing glass for SOFC applications. |
| first_indexed | 2025-11-14T10:34:26Z |
| format | Journal Article |
| id | curtin-20.500.11937-67613 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:34:26Z |
| publishDate | 2018 |
| publisher | Elsevier SA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-676132022-10-12T07:06:35Z Effect of Gd2O3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—A study on the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode Zhang, Q. Tan, S. Ren, M. Yang, H. Tang, D. Chen, K. Zhang, T. Jiang, San Ping Boron volatility is one of the most important properties of borosilicate-based glass sealants in solid oxide fuel cells (SOFCs), as boron contaminants react with lanthanum-containing cathodes, forming LaBO3 and degrading the activity of SOFCs. Here, we report that the reaction between the volatile boron and a La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode during polarization can be significantly reduced by doping aluminoborosilicate glass with Gd2O3. Specifically, the Gd cations in glass with 2 mol.% Gd2O3 dissolve preferentially in the borate-rich environment to form more Gd-metaborate structures and promote the formation of calcium metaborate (CaB2O4); they also condense the B–O network after heat treatment, which suppresses poisoning by boron contaminants on the LSCF cathode. The results provide insights into design and development of a reliable sealing glass for SOFC applications. 2018 Journal Article http://hdl.handle.net/20.500.11937/67613 10.1016/j.jpowsour.2018.02.057 http://purl.org/au-research/grants/arc/DP150102025 http://purl.org/au-research/grants/arc/DP150102044 Elsevier SA restricted |
| spellingShingle | Zhang, Q. Tan, S. Ren, M. Yang, H. Tang, D. Chen, K. Zhang, T. Jiang, San Ping Effect of Gd2O3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—A study on the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode |
| title | Effect of Gd2O3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—A study on the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode |
| title_full | Effect of Gd2O3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—A study on the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode |
| title_fullStr | Effect of Gd2O3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—A study on the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode |
| title_full_unstemmed | Effect of Gd2O3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—A study on the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode |
| title_short | Effect of Gd2O3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—A study on the La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode |
| title_sort | effect of gd2o3 doping on structure and boron volatility of borosilicate glass sealants in solid oxide fuel cells—a study on the la0.6sr0.4co0.2fe0.8o3-δ (lscf) cathode |
| url | http://purl.org/au-research/grants/arc/DP150102025 http://purl.org/au-research/grants/arc/DP150102025 http://hdl.handle.net/20.500.11937/67613 |