Bi-functional performances of BaCe0.95Tb0.05O3−δ-based hollow fiber membranes for power generation and hydrogen permeation
Hydrogen separation and conversion to electricity are the two key processes in hydrogen economy. Here, a bi-functional BaCe0.95Tb0.05O3-δ (BCTb) coated NiO-BCTb hollow fiber is reported. Below 700 °C, BCTb has dominant proton conductivity while above 700 °C, the electronic conductivity becomes more...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier Ltd
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/38174 |
| _version_ | 1848755248986849280 |
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| author | Meng, X. Shang, Y. Meng, B. Yang, N. Tan, X. Sunarso, J. Liu, Shaomin |
| author_facet | Meng, X. Shang, Y. Meng, B. Yang, N. Tan, X. Sunarso, J. Liu, Shaomin |
| author_sort | Meng, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Hydrogen separation and conversion to electricity are the two key processes in hydrogen economy. Here, a bi-functional BaCe0.95Tb0.05O3-δ (BCTb) coated NiO-BCTb hollow fiber is reported. Below 700 °C, BCTb has dominant proton conductivity while above 700 °C, the electronic conductivity becomes more significant, showing apparent behavior change from proton to mixed proton-electronic conductor. This enables its applicability as an electrolyte in solid oxide fuel cell (SOFC) below 700 °C and as a hydrogen permeation membrane beyond 700 °C. Microtubular SOFC showed a maximum power density of 552 mW cm−2 at 700 °C. Hydrogen permeation membrane demonstrated the highest flux of 0.53 mL min−1 cm−2 at 850 °C. The transition from proton to mixed protonic-electronic conductor was substantiated by the abrupt reduction in the open circuit voltage of the SOFC operated above 700 °C and in the protonic transport number from 0.94 to 0.81 with the temperature rise from 700 to 850 °C. |
| first_indexed | 2025-11-14T08:53:18Z |
| format | Journal Article |
| id | curtin-20.500.11937-38174 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:53:18Z |
| publishDate | 2016 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-381742017-09-13T15:37:02Z Bi-functional performances of BaCe0.95Tb0.05O3−δ-based hollow fiber membranes for power generation and hydrogen permeation Meng, X. Shang, Y. Meng, B. Yang, N. Tan, X. Sunarso, J. Liu, Shaomin Hydrogen separation and conversion to electricity are the two key processes in hydrogen economy. Here, a bi-functional BaCe0.95Tb0.05O3-δ (BCTb) coated NiO-BCTb hollow fiber is reported. Below 700 °C, BCTb has dominant proton conductivity while above 700 °C, the electronic conductivity becomes more significant, showing apparent behavior change from proton to mixed proton-electronic conductor. This enables its applicability as an electrolyte in solid oxide fuel cell (SOFC) below 700 °C and as a hydrogen permeation membrane beyond 700 °C. Microtubular SOFC showed a maximum power density of 552 mW cm−2 at 700 °C. Hydrogen permeation membrane demonstrated the highest flux of 0.53 mL min−1 cm−2 at 850 °C. The transition from proton to mixed protonic-electronic conductor was substantiated by the abrupt reduction in the open circuit voltage of the SOFC operated above 700 °C and in the protonic transport number from 0.94 to 0.81 with the temperature rise from 700 to 850 °C. 2016 Journal Article http://hdl.handle.net/20.500.11937/38174 10.1016/j.jeurceramsoc.2016.06.041 Elsevier Ltd restricted |
| spellingShingle | Meng, X. Shang, Y. Meng, B. Yang, N. Tan, X. Sunarso, J. Liu, Shaomin Bi-functional performances of BaCe0.95Tb0.05O3−δ-based hollow fiber membranes for power generation and hydrogen permeation |
| title | Bi-functional performances of BaCe0.95Tb0.05O3−δ-based hollow fiber membranes for power generation and hydrogen permeation |
| title_full | Bi-functional performances of BaCe0.95Tb0.05O3−δ-based hollow fiber membranes for power generation and hydrogen permeation |
| title_fullStr | Bi-functional performances of BaCe0.95Tb0.05O3−δ-based hollow fiber membranes for power generation and hydrogen permeation |
| title_full_unstemmed | Bi-functional performances of BaCe0.95Tb0.05O3−δ-based hollow fiber membranes for power generation and hydrogen permeation |
| title_short | Bi-functional performances of BaCe0.95Tb0.05O3−δ-based hollow fiber membranes for power generation and hydrogen permeation |
| title_sort | bi-functional performances of bace0.95tb0.05o3−δ-based hollow fiber membranes for power generation and hydrogen permeation |
| url | http://hdl.handle.net/20.500.11937/38174 |