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<p>Ce<sub>0.8</sub>Gd<sub>0.2</sub>O<sub>1.9</sub> (GDC) and Bi<sub>0.8</sub>Pr<sub>0.1</sub>Mo<sub>0.1</sub>O<sub>1.5</sub> (BPM) powders were prepared by the sol–gel and co-precipitation methods, respectively. The two powder compounds were mixed at a 1:1 mass ratio to form a GDC-BPM composite electrolyte. X-ray diffraction (XRD) analyses confirmed that there was no change in the structure of GDC and BPM in the composite system. The results showed that the composite of BPM greatly reduced the sintering temperature of the GDC electrolyte material. The conductivity of Ce<sub>0.8</sub>Gd<sub>0.2</sub>O<sub>1.9</sub> was significantly increased by compositing with Bi<sub>0.8</sub>Pr<sub>0.1</sub>Mo<sub>0.1</sub>O<sub>1.5</sub>, with the highest conductivity of 0.065 S cm<sup>−1</sup> observed at 800°C. In summary, the Ce<sub>0.8</sub>Gd<sub>0.2</sub>O<sub>1.9</sub>-Bi<sub>0.8</sub>Pr<sub>0.1</sub>Mo<sub>0.1</sub>O<sub>1.5</sub> composite electrolyte shows promising application prospects as an electrolyte material for intermediate-temperature solid oxide fuel cells.</p>

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Ce0.8Gd0.2O1.9-Bi0.8Pr0.1Mo0.1O1.5 Heterogeneous Structure Composite Electrolyte for Solid Oxide Fuel Cells

  • 期刊论文

  • 发表日期：

    2025年8月27日

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  • Ming Wang,
  • Yifeng Hou,
  • Jihai Cheng

摘要

Ce0.8Gd0.2O1.9 (GDC) and Bi0.8Pr0.1Mo0.1O1.5 (BPM) powders were prepared by the sol–gel and co-precipitation methods, respectively. The two powder compounds were mixed at a 1:1 mass ratio to form a GDC-BPM composite electrolyte. X-ray diffraction (XRD) analyses confirmed that there was no change in the structure of GDC and BPM in the composite system. The results showed that the composite of BPM greatly reduced the sintering temperature of the GDC electrolyte material. The conductivity of Ce0.8Gd0.2O1.9 was significantly increased by compositing with Bi0.8Pr0.1Mo0.1O1.5, with the highest conductivity of 0.065 S cm−1 observed at 800°C. In summary, the Ce0.8Gd0.2O1.9-Bi0.8Pr0.1Mo0.1O1.5 composite electrolyte shows promising application prospects as an electrolyte material for intermediate-temperature solid oxide fuel cells.