کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1635877 | 1516961 | 2015 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of linear carboxylic ester on low temperature performance of LiMn2O4-graphite cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of linear carboxylic ester on low temperature performance of LiMn2O4-graphite cells Effect of linear carboxylic ester on low temperature performance of LiMn2O4-graphite cells](/preview/png/1635877.png)
چکیده انگلیسی
To improve the low-temperature performances of Li-ion cells, three types of linear carboxylic ester-based electrolyte, such as EC/EMC/EA (1:1:2, mass ratio), EC/EMC/EP (1:1:2, mass ratio) and EC/EMC/EB (1:1:2, mass ratio), were prepared to substitute for industrial electrolyte (EC/EMC/DMC). Then, 18650-type LiMn2O4-graphite cells (nominal capacity of 1150 mA·h) were assembled and studied. Results show that the cells containing three types of electrolyte are able to undertake 5C discharging current with above 93% capacity retention at â20 °C. Electrochemical impedance spectra show that the discharge capacity fading of Li-ion cells at low temperature is mainly ascribed to the charge transfer resistance increasing with temperature decreasing. In comparison, the cells containing electrolyte of 1.0 mol/L LiPF6 in EC/EMC/EA (1:1:2, mass ratio) have the highest capacity retention of 90% at â40 °C and 44.41% at â60 °C, due to its lowest charge-transfer resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 25, Issue 1, January 2015, Pages 206-210
Journal: Transactions of Nonferrous Metals Society of China - Volume 25, Issue 1, January 2015, Pages 206-210
نویسندگان
Shu HONG, Jie LI, Guan-chao WANG, Zhi-an ZHANG, Yan-qing LAI,