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Chemical Sodiation of V2O5 by Na2S

机译:Na2S对V2O5的化学合成

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摘要

Chemical sodiation of V2O5 at low temperatures allows to synthesize NaxV2O5 with 0 <= x <= 1, while classic high temperature syntheses yield in either x <= 0.02 (alpha-phase) or 0.7 <= x (alpha'-phase), or other phases (beta-phase, delta-phase) or mixtures thereof. A suspension of V2O5 in acetonitrile and Na2S as sodiation agent were used. The maximum amount of sodiation was obtained by using an excess of Na2S, refluxing the acetonitrile during the reaction, and precedent ball milling of the V2O5. If only low amounts of Na2S were used as starting material, a mixture of fractions of NaxV2O5 with different values of x was obtained. All these fractions belong to the alpha- or alpha'-phase, space group Pmmn.
机译:在低温下化学合成V2O5可以合成0 <= x <= 1的NaxV2O5,而经典的高温合成则以x <= 0.02(α相)或0.7 <= x(α'相)或其他相(β相,δ相)或其混合物。使用V2O5在乙腈中的悬浮液和Na2S作为助成剂。通过使用过量的Na2S,在反应过程中使乙腈回流以及先进行V2O5球磨来获得最大量的硝化作用。如果仅使用少量的Na2S作为起始原料,则将获得具有不同x值的NaxV2O5馏分的混合物。所有这些分数都属于α相或α'相空间群Pmmn。

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