Abstract
The intercalation compounds Li 0.43 (PEO) 2.4 (H 2 O) 1.4 K 0.57 BiP 2 S 6 and Li 0.38 (PEO) 2.1 (H 2 O) 1.6 K 0.62 SbP 2 S 6 have been synthesized by the insertion of polyethylene oxide PEO in LiKMP 2 S 6 (M=Bi, Sb), that contained Li+ and K+ exchangeable cations in their interlayer space. The polymer PEO is able to associate interlayer Li+ cation modifying the ionic conductivity of pristine phases. These intercalation compounds constitute a new family of intercalates in the thiophosphate of Bi and Sb with Polyethylene oxide as guest species. They have been characterized by powder X-ray diffraction, FTIR-Raman, DTA/TGA analysis and electrical conductivity measurements. The studied nanocomposite shows values of electrical conductivity (σ i ) of about 10-6 Ω-1 cm-1 at room temperature.
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