کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1288816 973274 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The reductive mechanism of ethylene sulfite as solid electrolyte interphase film-forming additive for lithium ion battery
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
The reductive mechanism of ethylene sulfite as solid electrolyte interphase film-forming additive for lithium ion battery
چکیده انگلیسی

The reduction mechanism of ethylene sulfite (ES) in propylene carbonate (PC) based electrolyte is investigated using density functional theory in gas phase. Based on the electron affinity energy and lowest unoccupied molecular orbital (LUMO) energy, it can be known that free ES is reduced most easily compared with ES-Li+ and ES-Li+-PC, generating SO2 and propanal. However, the binding energy of ES-Li+ and ES-Li+-PC is quite negative, indicating that both of them are more possible in electrolyte solution than the free ES. The reductive decomposition products of ES-Li+ and ES-Li+-PC are OSO2Li, OSO2Li-R and ethylene. OSO2Li and OSO2Li-R are the main compositions of the solid electrolyte interphase film on the anode of lithium ion battery, which inhibits the reductive decomposition of PC. These calculations provide a detailed explanation on the experimental phenomena.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 196, Issue 16, 15 August 2011, Pages 7044–7047
نویسندگان
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