کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7540229 | 1489005 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development of ionic liquid and lithium salt immobilized MCM-41 quasi solid-liquid electrolytes for lithium batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
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چکیده انگلیسی
Li-ion conducting quasi solid-liquid electrolytes (QS-LEs) containing ionic liquid EMIMTFSI, lithium salt LiTFSI and ordered mesoporous MCM-41 (Mobil Composition of Matter no. 41) have been synthesized and characterized by N2-sorption, SEM, TEM, DSC, TGA, and complex impedance spectroscopy techniques. The results show that the synthesized QS-LE has good thermal stability (â¼360 °C; onset temperature) and a wide electrochemical window â¼5.23 V. The ionic conductivity is increases with increasing the amount of Li-IL (LIL) solution and attains a value of â¼6.37 Ã 10â4 S cmâ1 at 30 °C and 1.60 Ã 10â3 S cmâ1 at 70 °C for QS-LE containing high amount of LIL solution. The high ionic conductivity is attributed to the enormous adsorption of LIL solution on the external surface and in the ordered mesopores channels of the MCM-41. A high total ionic transference number (â¼0.99) and cationic transference number (tLi+ â¼Â 0.35) for QS-LE containing high amount of LIL solution have also been obtained. Furthermore, the QS-LE displays outstanding electrochemical properties (specific capacity â¼153 mAh gâ1 at C/10 rate; and good high rate capability â¼100 mAh gâ1 and 83 mAh gâ1 at 1C and 2C rate respectively) and battery performance with LiFePO4 cathodes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Energy Storage - Volume 15, February 2018, Pages 283-291
Journal: Journal of Energy Storage - Volume 15, February 2018, Pages 283-291
نویسندگان
Alok Kumar Tripathi, Rajendra Kumar Singh,