Abstract
NASICON powders with the composition of Na 3Zr 2Si 2PO 12 were synthesized by using a sol–gel method. In the course of synthesis, a different material of oxalic acid was used to modify the synthesis process. The resulted precursors were sintered at the temperatures ranging from 700 to 1000 °C to get NASIOCN powders. X-ray diffractometer (XRD), IR and Raman spectra were employed to characterize the sintered products. Also, the ionic conductivity measurement conducted in the temperatures of 150–300 °C was used to evaluate their electronic properties. Furthermore, CO 2 sensor was prepared based on the pressed NASICON bulk. The relationship between its EMF response and the target gas concentration was checked. The experiment results showed that the NASICON material sintered at 900 °C possessed better properties in comparison with those sintered at other temperatures.
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