Synthesis and Evaluation of LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> Cathode for Intermediate-Temperature Solid Oxide Fuel Cells
LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> (LBCM<i>x</i>, <i>x</i> = 0–0.08) cathodes synthesized by a sol-gel method were evaluated for intermediate-temperature solid oxide fu...
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| author | Shoucheng He Lanqing Zhang Jiantao Cai Xingyu Wu Hanxi Sun Tao Du |
| author_facet | Shoucheng He Lanqing Zhang Jiantao Cai Xingyu Wu Hanxi Sun Tao Du |
| author_sort | Shoucheng He |
| collection | DOAJ |
| description | LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> (LBCM<i>x</i>, <i>x</i> = 0–0.08) cathodes synthesized by a sol-gel method were evaluated for intermediate-temperature solid oxide fuel cells. The limit of the solid solubility of Mo in LBCM<i>x</i> was lower than 0.08. As the content of Mo increased gradually from 0 to 0.06, the thermal expansion coefficient decreased from 20.87 × 10<sup>−6</sup> K<sup>−1</sup> to 18.47 × 10<sup>−6</sup> K<sup>−1</sup>. The introduction of Mo could increase the conductivity of LBCM<i>x</i>, which varied from 464 S cm<sup>−1</sup> to 621 S cm<sup>−1</sup> at 800 °C. The polarization resistance of the optimal cathode LBCM0.04 in air at 800 °C was 0.036 Ω cm<sup>2</sup>, reduced by a factor of 1.67 when compared with the undoped Mo cathode. The corresponding maximum power density of a single cell based on a YSZ electrolyte improved from 165 mW cm<sup>−2</sup> to 248 mW cm<sup>−2</sup> at 800 °C. |
| first_indexed | 2024-03-10T01:36:46Z |
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| id | doaj.art-bb9dd6610c144ab68332247356a8abcf |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:36:46Z |
| publishDate | 2022-08-01 |
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| spelling | doaj.art-bb9dd6610c144ab68332247356a8abcf2023-11-23T13:31:25ZengMDPI AGMaterials1996-19442022-08-011517585810.3390/ma15175858Synthesis and Evaluation of LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> Cathode for Intermediate-Temperature Solid Oxide Fuel CellsShoucheng He0Lanqing Zhang1Jiantao Cai2Xingyu Wu3Hanxi Sun4Tao Du5School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaLaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> (LBCM<i>x</i>, <i>x</i> = 0–0.08) cathodes synthesized by a sol-gel method were evaluated for intermediate-temperature solid oxide fuel cells. The limit of the solid solubility of Mo in LBCM<i>x</i> was lower than 0.08. As the content of Mo increased gradually from 0 to 0.06, the thermal expansion coefficient decreased from 20.87 × 10<sup>−6</sup> K<sup>−1</sup> to 18.47 × 10<sup>−6</sup> K<sup>−1</sup>. The introduction of Mo could increase the conductivity of LBCM<i>x</i>, which varied from 464 S cm<sup>−1</sup> to 621 S cm<sup>−1</sup> at 800 °C. The polarization resistance of the optimal cathode LBCM0.04 in air at 800 °C was 0.036 Ω cm<sup>2</sup>, reduced by a factor of 1.67 when compared with the undoped Mo cathode. The corresponding maximum power density of a single cell based on a YSZ electrolyte improved from 165 mW cm<sup>−2</sup> to 248 mW cm<sup>−2</sup> at 800 °C.https://www.mdpi.com/1996-1944/15/17/5858solid oxide fuel cellperovskite cathodethermal expansion coefficientelectrical conductivityelectrochemical performance |
| spellingShingle | Shoucheng He Lanqing Zhang Jiantao Cai Xingyu Wu Hanxi Sun Tao Du Synthesis and Evaluation of LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> Cathode for Intermediate-Temperature Solid Oxide Fuel Cells Materials solid oxide fuel cell perovskite cathode thermal expansion coefficient electrical conductivity electrochemical performance |
| title | Synthesis and Evaluation of LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> Cathode for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_full | Synthesis and Evaluation of LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> Cathode for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_fullStr | Synthesis and Evaluation of LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> Cathode for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_full_unstemmed | Synthesis and Evaluation of LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> Cathode for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_short | Synthesis and Evaluation of LaBaCo<sub>2−<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>5+<i>δ</i></sub> Cathode for Intermediate-Temperature Solid Oxide Fuel Cells |
| title_sort | synthesis and evaluation of labaco sub 2 i x i sub mo i sub x sub i o sub 5 i δ i sub cathode for intermediate temperature solid oxide fuel cells |
| topic | solid oxide fuel cell perovskite cathode thermal expansion coefficient electrical conductivity electrochemical performance |
| url | https://www.mdpi.com/1996-1944/15/17/5858 |
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