کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7727666 1497907 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation analysis of 18650-type lithium-ion cells by operando neutron diffraction
ترجمه فارسی عنوان
تجزیه و تحلیل تجزیه و تحلیل سلول های یون لیتیوم 18650 با پراش نوترون اپرانود
کلمات کلیدی
سلول یون لیتیوم، پراش نوترون، تنزل، در موقعیت، اپندورو،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
In-situ and operando neutron diffraction are used to analyze the degradation of 18650-type Li-ion cells. Structural characterization of the electrode materials is performed by applying the Rietveld refinement technique to the in-situ data. The structural refinement of both electrodes in the degraded cells indicates that the amount of active Li-ions is reduced by 14.4% and 13.7% in the cathode and anode, respectively. This reduction is good in agreement with the capacity loss determined electrochemically. The results suggest that capacity loss might be mainly caused by loss of active Li-ions due to side reactions such as solid electrolyte interface (SEI) growth. Furthermore, operando measurements are performed to examine the deterioration of the electrode and active materials. Because the structural evolution depending on capacity is increased in the cathode of degraded cells, it is presumed that the cathode active material has deteriorated due to phase transitions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 325, 1 September 2016, Pages 404-409
نویسندگان
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