Preparation, Characterization and Conductivity of Solid High-Proton Conductor Na₇[CoW₁₁O₃₉Cd(H₂O)]·12H₂O

Abstract:

A new solid high-proton conductor Na₇[CoW₁₁O₃₉Cd (H₂O)]·12H₂O has been synthesized for the first time. The percentage composition of the product were determined by Inductively coupled plasma (ICP) and X-ray photoelectron spectroscopy (XPS). The product was characterized by infrared spectroscopy (IR) and X-ray diffraction (XRD), which indicate it possesses the Keggin structure. The TG-DTA curve shows the sequence of water loss in the compound, the amount of the loss, as well as the thermostability. Conductivity of the compound was investigated by four-electrode method at room temperature and different measuring temperatures, the results reveal that its proton conductivity is 4.87×10⁻⁴ S·cm^-1 at 27oC and the activation energy for proton conduction is 15.31 kJ/mol.

• Periodical: Advanced Materials Research (Volume 937)
• Pages: 224-228
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.937.224
• Online since: May 2014
• Authors: Li Qiang Chen, Xiu Mei Lin, Ming Xia Zhu, Li Mei Dai*
• Keywords: Cadmium, Conductivity, Heteropoly Compounds, Keggin Structure

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