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Synthesis of Nd-doped barium cerate proton conductor from oxalate coprecipitate precursor

  • Inorganic Compounds
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Abstract

The decomposition process of barium, cerium and neodymium oxalates in air was investigated by DTA-TG. Decomposition of an oxalate coprecipitate precursor and formation of barium cerate were examined in air, N2 and CO2 atmospheres, respectively, by employing DTA-TG and XRD. The results showed that, in air, cerium oxalate could easily be decomposed to CeO2 below 350°C and Nd2O3 could be obtained at 670°C, while a high temperature of >1400°C was needed to obtain BaO. Although some amount of BaCeO3 was formed at 500°C in air, at 650°C in N2 and at 800°C in CO2, single perovskite phase of BaCeO3 could only be obtained at a much higher temperature.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui, P. R.China

    F. L. Chen, G. Y. Meng & D. K. Peng

  2. Materials Department, Risø National Laboratory, DK-4000, Roskilde, Denmark

    O. T. Sørensen

Authors
  1. F. L. Chen
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  2. O. T. Sørensen
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  3. G. Y. Meng
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  4. D. K. Peng
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Additional information

This work is supported by the National Natural Science Foundation of China under Grant No. 59372103. F. L. Chen is grateful to Danish International Development Assistance (Danida) and State Science and Technology Commission (SSTC) of China for offering this joint Ph. D. study at Materials Department, Risø National Laboratory. Dr. N. Bonanos at Risø National Laboratory is acknowledged for his constant interest and encouragement to this work. Special thanks are given to P. V. Jensen and T. R. Strauss for their experimental assistance.

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Chen, F.L., Sørensen, O.T., Meng, G.Y. et al. Synthesis of Nd-doped barium cerate proton conductor from oxalate coprecipitate precursor. Journal of Thermal Analysis 49, 1255–1261 (1997). https://doi.org/10.1007/BF01983682

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