کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7724900 1497839 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Operando analysis of lithium profiles in Li-ion batteries using nuclear microanalysis
ترجمه فارسی عنوان
تجزیه اپندور از پروفیل های لیتیوم در باتری های لیتیوم یون با استفاده از میکروآنالیز هسته ای
کلمات کلیدی
در موقعیت، تجزیه اپندور، میکروپروبای هسته ای، باتری های لیتیوم یون،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
A wide variety of analytical methods are used for studying the behavior of lithium-ion batteries and particularly the lithium ion distribution in the electrodes. However, the development of in situ/operando techniques proved powerful to understand the mechanisms responsible for the lithium trapping and then the aging phenomenon. Herein, we report the design of an electrochemical cell to profile operando lithium concentration in LiFePO4 electrodes using Ion Beam Analysis techniques. The specificity of the cell resides in its ability to not only provide qualitative information about the elements present but above all to measure quantitatively their content in the electrode at different states of charge of the battery. The nuclear methods give direct information about the degradation of the electrolyte and particularly reveal inhomogeneous distributions of lithium and fluorine along the entire thickness of the electrode. Higher concentrations of fluorine is detected near the electrode/electrolyte interface while a depletion of lithium is observed near the current collector at high states of charge.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 393, 31 July 2018, Pages 37-42
نویسندگان
, , , , , , , ,