Conduction and stability performance of CsH2PO4 with NaH2PO4/ZrO2 for fuel cell

Solid acid composites of CsH2PO4/NaH2PO4/ZrO2 with different weight ratios of CsH2PO4 (CDP), NaH2PO4 (SDP), and ZrO2 were synthesized and characterized. The characterizations of the solid acid composite were carried out for determining structure, thermal stability, and conductivity, utilizing x-ray Diffraction, Fourier Transform Infrared Spectroscopy, Thermogravimetric analysis, Differential Thermal Analysis, and conductivity measurements. The composite powders were in the form of pellets of 4 mm thickness for conductivity measurement. SDP in the composites has a large effect on the conductivity measurement and this material increased the low-temperature conductivity of CDP by up to 1.5 orders of magnitude. The superprotonic transition was identified at temperatures from 220 to 270 degrees C in CDP/SDP/ZrO2 composites under atmospheric pressure. The thermal stability of the solid acid composites for dehydration, melting, and decomposition was investigated in the temperature range of 50 to 300 degrees C under environments with atmospheric humidification.

Automated summary

Solid acid composites of CsH2PO4/NaH2PO4/ZrO2 with various weight ratios were synthesized and characterized, showing that SDP has a significant impact on conductivity measurement by increasing the low-temperature conductivity of CDP. A superprotonic transition was identified in CDP/SDP/ZrO2 composites at temperatures ranging from 220 to 270 degrees Celsius under atmospheric pressure, demonstrating the potential applications of these composites in various environments.