کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6606664 | 459525 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Use of phosphoranimines to reduce organic carbonate content in Li-ion battery electrolytes
ترجمه فارسی عنوان
استفاده از فسفورمین ها برای کاهش میزان کربنات آلی در الکترولیت های باتری لیتیوم یون
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کلمات کلیدی
فسفورمینیم، فسفاتاز باتری، الکترولیت یون لیتیوم، ایمنی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The use of phosphoranimines (PAs), a class of linear, monomeric phosphazenes, as electrolytes for Li-ion battery applications has been investigated as a route to improve safety and stability for Li-ion batteries. Of the potential PAs for use in battery applications, this work focuses on the initial synthetic preparation and analysis of N-trimethylsilyl-P,P-bis((2-methoxyethoxy)ethoxy)-P-ethylphosphoranimine (PA-5). PA-5 has high LiPF6 solubility in excess of 2 M, high thermal stability with a melting point below â80° C and high thermal stability as a neat compound to at least 250° C. As part of electrolyte blends, the inclusion of PA-5 shifts the onset of thermal degradation by close to 40° C at 35% loading and by 20° C at a 10% loading, improves the low temperature performance of the electrolyte, and when used as a primary solvent leads to increases in the flash point (by 20° C) when compared to more traditional EC:EMC blends. Cycling capabilities of full-coin cells with graphite negative electrodes and Li1+w[Ni0.5Mn0.3Co0.2]1-wO2 positive electrodes using PA-5:EC:EMC electrolyte blends are comparable with the performance seen for traditional EC:EMC blends. Analysis of the impact of the use of additives such as vinylene carbonate in PA-5:EC:EMC blended electrolyte results in enhanced capacity retention and improved coulombic efficiency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 209, 10 August 2016, Pages 36-43
Journal: Electrochimica Acta - Volume 209, 10 August 2016, Pages 36-43
نویسندگان
Eric J. Dufek, John R. Klaehn, Joshua S. McNally, Harry W. Rollins, David K. Jamison,