کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
194851 459801 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New organic–inorganic crystalline electrolytes synthesized from 12-phosphotungstic acid and the ionic liquid [BMIM][TFSI]
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
New organic–inorganic crystalline electrolytes synthesized from 12-phosphotungstic acid and the ionic liquid [BMIM][TFSI]
چکیده انگلیسی

New organic–inorganic hybrid crystalline electrolytes comprised of 12-phosphotungstic acid (PWA) and the ionic liquid [1-butyl-3-methylimidazole][bis-(fluoromethanesulfonyl)amide] ([BMIM][TFSI]) with high thermal stability and high ion conductivity at high temperatures were obtained. In the new hybrids, there was a strong interaction between [BMIM]+ of the ionic liquid and PWA. The hybrids were very stable up to about 400 °C and showed a high ion jump during heating and cooling processes. Based on results from TG–DTA, DSC, and NMR spectroscopy, the ion jump was due to melting and solidification of the hybrid. The structures of powder and single-crystal samples of the hybrids were also studied. The chemical formula of the hybrid in the single crystal was determined to be PW13C32H56O54N8S0.16F0.26. This is nearly the same as those determined from the powder samples. By analyzing single-crystal X-ray diffraction (XRD) data, the hybrid was determined to crystallize in the space group Pca21 with the lattice constants a = 18.316(3), b = 18.327(3), and c = 16.657(3) Å. The powder XRD data of the hybrid were assigned.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 53, Issue 26, 1 November 2008, Pages 7638–7643
نویسندگان
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