کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7738261 1497983 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel polymer electrolytes based on cationic polyurethane with different alkyl chain length
ترجمه فارسی عنوان
الکترولیت های پلیمری مبتنی بر پلی یورتان کاتیونی با طول آلکالین های مختلف
کلمات کلیدی
پلی اورتان کاتیونی، الکترولیت پلیمری جامد، نمک های آمونیوم آلکیل چهارسانی، شانه شبیه،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
A series of comb-like cationic polyurethanes (PUs) were synthesized by quaternizing different bromoalkane (C2H5Br, C8H17Br, and C14H29Br) with polyurethane. Solid polymer electrolytes were prepared by complexes cationic PUs with different content of LiClO4. All the solid polymer electrolytes had sufficient thermal stability as confirmed by TGA and exhibited a single-phase behavior evidenced by DSC results. For these electrolytes, FT-IR spectra indicated the formation of polymer-ion complexes. The ac impedance spectra show that the conductivity of the electrolytes follow the Arrhenius behavior, and ionic conductivity is associated with both the charge migration of ions between coordination sites and transmission between aggregates, as confirmed by FT-IR and SEM. Alkyl quaternary ammonium salts in the polymer backbone are recognized as inherent plasticizers, which make the electrolytes exhibit liquid-like behavior. The plasticizing effect of PU-C8 and PU-C14 electrolytes are more effective than that of PU-C2 electrolyte. Maximum ionic conductivity at room temperature for PU-C8 electrolytes containing 50 wt% LiClO4 reached 1.1 × 10−4 S cm−1. This work provides a new research clue that alkyl quaternary ammonium salts could be used as inherent plasticizers and hence make the system behave like a liquid with high ionic conductivity, while preserving the dimensional stability of the solids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 249, 1 March 2014, Pages 397-404
نویسندگان
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