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Conductive SrVO3 Powders Synthesized by Sol-Gel Method
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College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China

Fund Project:

Program of Sichuan Province Science and Technology Project (2020ZDZX0008, 2020YFG0465); Program of Postdoctoral Science Foundation of Sichuan University (2021SCU12060)

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    Abstract:

    Conductive SrVO3 powders were synthesized by sol-gel method combined with subsequent heat treatment. The molar ratio of Sr:V was adjusted during the sol process. The thermal behavior of the gel was analyzed to figure out the calcination temperature in order to get the precursors without residual carbon, and then the gel was reduced in H2 to obtain the final products. The influence of temperature and molar ratio of Sr:V on the morphologies, structures and compositions was researched. The conductivity of the samples was tested by standard dc four-probe technology. The results show that when the molar ratio of Sr:V=1:1.06, the calcination temperature is 500 °C and reduction temperature is 850 °C in H2, the SrVO3 powers without the impurities of residual carbon or vanadium oxides can be obtained. The electrical conductivity of SrVO3 powders reaches 714.3 S/cm, while that of graphite powders is about 500 S/cm.

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[Ouyang Linfeng, Yang Xiaojiao, Li Xiaolei, Du Yibo, Lin Zifeng, Liu Ying. Conductive SrVO3 Powders Synthesized by Sol-Gel Method[J]. Rare Metal Materials and Engineering,2022,51(6):2039~2045.]
DOI:10.12442/j. issn.1002-185X.20210338

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History
  • Received:April 17,2021
  • Revised:May 27,2021
  • Adopted:May 27,2021
  • Online: June 29,2022
  • Published: June 29,2022