FIELD: chemistry.
SUBSTANCE: invention relates to the chemistry of superionic conductors, namely to a method for producing a sodium superionic conductor NaSn2(PO4)3. The method for obtaining NaSn2(PO4)3 with the NASICON structure consists in two-stage heat treatment of tin and sodium source compounds in the presence of NH4H2PO4. (NH4)2SnF6 is used as a source of tin, NaH2PO4⋅2H2O is used as a source of sodium, while the molar ratio (NH4)2SnF6:NaH2PO4⋅2H2O:NH4H2PO4 is 2:1:2. The mixture (NH4)2SnF6, NaH2PO4⋅2H2O, NH4H2PO4 is subjected to heat treatment in the first stage at 300°C for 1 hour, and in the second stage heat treatment is carried out for 2 hours at a temperature above 500°C.
EFFECT: obtaining NaSn2(PO4)3 with the NASICON structure using a less energy-intensive and time-consuming method.
1 cl, 3 dwg, 3 ex
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