Self-Assembled Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) Conducting Nanocomposite of Ba-Co-Ce-Y-O into an Electrolyte for Semiconductor Ionic Fuel Cells
Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) conducting oxides (TCOs) have been extensively investigated as the most promising cathode materials for solid oxide fuel cells (SOFCs) because of their excellent catalytic activity for oxygen reduction reaction (...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-09-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/11/9/2365 |
| _version_ | 1797517877296758784 |
|---|---|
| author | Dan Xu An Yan Shifeng Xu Yongjun Zhou Shu Yang Rongyu Zhang Xu Yang Yuzheng Lu |
| author_facet | Dan Xu An Yan Shifeng Xu Yongjun Zhou Shu Yang Rongyu Zhang Xu Yang Yuzheng Lu |
| author_sort | Dan Xu |
| collection | DOAJ |
| description | Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) conducting oxides (TCOs) have been extensively investigated as the most promising cathode materials for solid oxide fuel cells (SOFCs) because of their excellent catalytic activity for oxygen reduction reaction (ORR) and fast proton transport. However, here we report a stable twin-perovskite nanocomposite Ba-Co-Ce-Y-O (BCCY) with triple conducting properties as a conducting accelerator in semiconductor ionic fuel cells (SIFCs) electrolytes. Self-assembled BCCY nanocomposite is prepared through a complexing sol–gel process. The composite consists of a cubic perovskite (Pm-3m) phase of BaCo<sub>0.9</sub>Ce<sub>0.01</sub>Y<sub>0.09</sub>O<sub>3-δ</sub> and a rhombohedral perovskite (R-3c) phase of BaCe<sub>0.78</sub>Y<sub>0.22</sub>O<sub>3-δ</sub>. A new semiconducting–ionic conducting composite electrolyte is prepared for SIFCs by the combination of BCCY and CeO<sub>2</sub> (BCCY-CeO<sub>2</sub>). The fuel cell with the prepared electrolyte (400 μm in thickness) can deliver a remarkable peak power density of 1140 mW·cm<sup>−2</sup> with a high open circuit voltage (OCV) of 1.15 V at 550 °C. The interface band energy alignment is employed to explain the suppression of electronic conduction in the electrolyte. The hybrid H<sup>+</sup>/O<sup>2−</sup> ions transport along the surfaces or grain boundaries is identified as a new way of ion conduction. The comprehensive analysis of the electrochemical properties indicates that BCCY can be applied in electrolyte, and has shown tremendous potential to improve ionic conductivity and electrochemical performance. |
| first_indexed | 2024-03-10T07:22:20Z |
| format | Article |
| id | doaj.art-92cb2e8254b040baaaabc45254979709 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T07:22:20Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-92cb2e8254b040baaaabc452549797092023-11-22T14:31:25ZengMDPI AGNanomaterials2079-49912021-09-01119236510.3390/nano11092365Self-Assembled Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) Conducting Nanocomposite of Ba-Co-Ce-Y-O into an Electrolyte for Semiconductor Ionic Fuel CellsDan Xu0An Yan1Shifeng Xu2Yongjun Zhou3Shu Yang4Rongyu Zhang5Xu Yang6Yuzheng Lu7College of Science, Shenyang Aerospace University, Shenyang 110136, ChinaCollege of Science, Shenyang Aerospace University, Shenyang 110136, ChinaCollege of Science, Shenyang Aerospace University, Shenyang 110136, ChinaCollege of Science, Shenyang Aerospace University, Shenyang 110136, ChinaCollege of Science, Shenyang Aerospace University, Shenyang 110136, ChinaCollege of Science, Shenyang Aerospace University, Shenyang 110136, ChinaCollege of Science, Shenyang Aerospace University, Shenyang 110136, ChinaSchool of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, ChinaTriple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) conducting oxides (TCOs) have been extensively investigated as the most promising cathode materials for solid oxide fuel cells (SOFCs) because of their excellent catalytic activity for oxygen reduction reaction (ORR) and fast proton transport. However, here we report a stable twin-perovskite nanocomposite Ba-Co-Ce-Y-O (BCCY) with triple conducting properties as a conducting accelerator in semiconductor ionic fuel cells (SIFCs) electrolytes. Self-assembled BCCY nanocomposite is prepared through a complexing sol–gel process. The composite consists of a cubic perovskite (Pm-3m) phase of BaCo<sub>0.9</sub>Ce<sub>0.01</sub>Y<sub>0.09</sub>O<sub>3-δ</sub> and a rhombohedral perovskite (R-3c) phase of BaCe<sub>0.78</sub>Y<sub>0.22</sub>O<sub>3-δ</sub>. A new semiconducting–ionic conducting composite electrolyte is prepared for SIFCs by the combination of BCCY and CeO<sub>2</sub> (BCCY-CeO<sub>2</sub>). The fuel cell with the prepared electrolyte (400 μm in thickness) can deliver a remarkable peak power density of 1140 mW·cm<sup>−2</sup> with a high open circuit voltage (OCV) of 1.15 V at 550 °C. The interface band energy alignment is employed to explain the suppression of electronic conduction in the electrolyte. The hybrid H<sup>+</sup>/O<sup>2−</sup> ions transport along the surfaces or grain boundaries is identified as a new way of ion conduction. The comprehensive analysis of the electrochemical properties indicates that BCCY can be applied in electrolyte, and has shown tremendous potential to improve ionic conductivity and electrochemical performance.https://www.mdpi.com/2079-4991/11/9/2365twin-perovskitetriple conducting oxidesheterostructureelectrochemical performance |
| spellingShingle | Dan Xu An Yan Shifeng Xu Yongjun Zhou Shu Yang Rongyu Zhang Xu Yang Yuzheng Lu Self-Assembled Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) Conducting Nanocomposite of Ba-Co-Ce-Y-O into an Electrolyte for Semiconductor Ionic Fuel Cells Nanomaterials twin-perovskite triple conducting oxides heterostructure electrochemical performance |
| title | Self-Assembled Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) Conducting Nanocomposite of Ba-Co-Ce-Y-O into an Electrolyte for Semiconductor Ionic Fuel Cells |
| title_full | Self-Assembled Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) Conducting Nanocomposite of Ba-Co-Ce-Y-O into an Electrolyte for Semiconductor Ionic Fuel Cells |
| title_fullStr | Self-Assembled Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) Conducting Nanocomposite of Ba-Co-Ce-Y-O into an Electrolyte for Semiconductor Ionic Fuel Cells |
| title_full_unstemmed | Self-Assembled Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) Conducting Nanocomposite of Ba-Co-Ce-Y-O into an Electrolyte for Semiconductor Ionic Fuel Cells |
| title_short | Self-Assembled Triple (H<sup>+</sup>/O<sup>2−</sup>/e<sup>−</sup>) Conducting Nanocomposite of Ba-Co-Ce-Y-O into an Electrolyte for Semiconductor Ionic Fuel Cells |
| title_sort | self assembled triple h sup sup o sup 2 sup e sup sup conducting nanocomposite of ba co ce y o into an electrolyte for semiconductor ionic fuel cells |
| topic | twin-perovskite triple conducting oxides heterostructure electrochemical performance |
| url | https://www.mdpi.com/2079-4991/11/9/2365 |
| work_keys_str_mv | AT danxu selfassembledtriplehsupsuposup2supesupsupconductingnanocompositeofbacoceyointoanelectrolyteforsemiconductorionicfuelcells AT anyan selfassembledtriplehsupsuposup2supesupsupconductingnanocompositeofbacoceyointoanelectrolyteforsemiconductorionicfuelcells AT shifengxu selfassembledtriplehsupsuposup2supesupsupconductingnanocompositeofbacoceyointoanelectrolyteforsemiconductorionicfuelcells AT yongjunzhou selfassembledtriplehsupsuposup2supesupsupconductingnanocompositeofbacoceyointoanelectrolyteforsemiconductorionicfuelcells AT shuyang selfassembledtriplehsupsuposup2supesupsupconductingnanocompositeofbacoceyointoanelectrolyteforsemiconductorionicfuelcells AT rongyuzhang selfassembledtriplehsupsuposup2supesupsupconductingnanocompositeofbacoceyointoanelectrolyteforsemiconductorionicfuelcells AT xuyang selfassembledtriplehsupsuposup2supesupsupconductingnanocompositeofbacoceyointoanelectrolyteforsemiconductorionicfuelcells AT yuzhenglu selfassembledtriplehsupsuposup2supesupsupconductingnanocompositeofbacoceyointoanelectrolyteforsemiconductorionicfuelcells |