کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7731588 | 1497939 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Graphitic carbon anode temperature excursions reflect crystallographic phase transitions in lithium-ion cells
ترجمه فارسی عنوان
گشت و گذار در دمای انجماد گرافیتی منعکس کننده انتقال فاز کریستالوگرافی در سلول های یون لیتیوم است
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کلمات کلیدی
شارژ سریع دمای آنود، انتقال فاز، کربن گرافیتی، لیتینگ،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Surface temperature measurement of lithium-ion cells provides a limited view of internal physical processes during charging. Using a recently developed non-invasive battery internal temperature sensor, we now demonstrate that anode temperature reflects physically-based dynamics at the anode that were previously obscured by cell-surface measurements. First, using automated segmentation with a maximum-likelihood piecewise-linear statistical model, we show that features in the anode temperature reproducibly coincide with phase transitions into Stages IVd, IV and I of graphitic carbon lithiation at various charging rates. Second, we show that anode temperature peaks around 61% state of charge, intermediate between Stages II and I of the lithiated graphitic carbon. Third, we demonstrate a sharp and sustained increase in anode temperature at variable state of charge above 85%. These findings open the possibility for improved state-of-charge estimation and adaptive charging profiles that safely reduce charging time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 293, 20 October 2015, Pages 876-882
Journal: Journal of Power Sources - Volume 293, 20 October 2015, Pages 876-882
نویسندگان
Rengaswamy Srinivasan, Lakshminarayan Srinivasan,