Novel Highly Dispersed Additive for Proton-Conducting Composites

The proton conductivity and structural properties of (1–x)CsH2PO4–xZnSnO3 composites with compositions x = 0.2–0.8 were studied. Zinc stannate ZnSnO3 was prepared by the thermal decomposition zinc hydroxostannate ZnSn(OH)6, which synthesized hydrolytic codeposition. To optimize microstructure ZnSnO3, products ZnSn(OH)6 characterized analysis X-ray diffraction, Fourier transform infrared spectroscopy, low-temperature nitrogen adsorption, electron microscopy. study reveals that thermolysis at temperatures 300–520 °C formed an amorphous a high surface area 85 m2/g possessing increased water retention, used as matrix for formation composite electrolytes CsH2PO4–ZnSnO3. CsH2PO4 crystal structure remained in systems, but dispersion partial salt amorphization observed due to interface interaction matrix. It shown region up 2.5 orders magnitude, went through smooth maximum 0.2, then decreased percolation effect. measurement ZnSnO3–CsH2PO4 revealed can be heterogeneous additive other solid electrolytes. Therefore, such materials applied hydrogen production membrane reactors.