کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7725317 1497848 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of polyphosphazene electrolytes including cyclic ether side groups
ترجمه فارسی عنوان
سنتز و مشخصه الکترولیت های پلی فسفسن از جمله گروه های ایکر سیکلی
کلمات کلیدی
الکترولیت پلیمر، باتری های یون لیتیوم، پلی فسفسن، نمک در پلیمر، شماره انتقال لیتیم،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
This paper presents the synthesis and detailed characterization of two polyphosphazene based polymers, including different cyclic ether side groups. The final polymers were obtained by a well-known method employing a living cationic polymerization and subsequent nucleophilic substitution. The synthesized polymers Poly [(1,3-dioxane-5-oxy) (1,3-dioxolane-4-methoxy)phosphazene] (DOPP) and Poly[bis(2-Tetrahydro-3-furanoxy)phosphazene] (THFPP) were mixed with varied amounts of lithium bis(trifluoromethane)sulfonamide (LiTFSI) and the interactions between the salt and the polymer chains were studied by Fourier transform infrared (FT-IR) and differential scanning calorimetry (DSC) measurements. Electrochemical characterization was performed by electrochemical impedance spectroscopy (EIS) and direct current polarization in the temperature range of 20-60 °C. These measurements were utilized to calculate the lithium transference number (t+), the lithium conductivity (σ) and its activation energy in order to elucidate the lithium transport behavior. Relatively high lithium transference numbers of 0.6 (DOPP) and 0.7 (THFPP) at 60 °C are found and reveal maximum lithium conductivities of 2.8·10−6 S⋅cm−1 and 9.0·10−7 S⋅cm−1 for DOPP and THFPP at 60 °C, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 384, 30 April 2018, Pages 165-171
نویسندگان
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