Abstract

Ceramics based on hollandites are known to mainly produced by the conventional solid-phase method. However, the use of various sol–gel methods in some cases makes it possible to change the temperature and time its synthesis, morphological characteristics, porosity, and electrophysical properties. In this work, ceramic materials based on a number of cesium titanate hollandite phases were synthesized by combustion of citrate–nitrate mixtures. The structure of the obtained materials was studied by X-ray powder diffraction analysis and scanning electron microscopy. Investigation of the electrophysical properties showed that, in a hydrogen flow, the electrical conductivity of hollandites with aluminum and nickel increases significantly (by 2.5–3 orders of magnitude) throughout the studied temperature range. Thus, ceramics based on these hollandites can be considered promising for creating hydrogen sensors and fuel cells.

中文翻译：

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具有荷兰石型结构的相的合成和研究，在系统中结晶 Cs2O–M2O3(MO)–TiO2 (M = Al, Fe, Сu, Ni, Mg)

摘要

已知主要通过常规固相法生产基于荷兰石的陶瓷。然而，在某些情况下，使用各种溶胶-凝胶方法可以改变其合成、形态特征、孔隙率和电物理性质的温度和时间。在这项工作中，通过燃烧柠檬酸盐-硝酸盐混合物，合成了基于大量钛酸铯钙橄榄石相的陶瓷材料。通过X射线粉末衍射分析和扫描电子显微镜研究所得材料的结构。对电物理性质的研究表明，在氢气流中，在整个研究温度范围内，含铝和镍的碳化物的电导率显着增加（增加了 2.5-3 个数量级）。因此，