کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7725609 1497852 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Semi-empirical master curve concept describing the rate capability of lithium insertion electrodes
ترجمه فارسی عنوان
مفهوم منحنی کارشناسی نیمه تجربی، توصیف توانایی نرخ الکترود قرار دادن لیتیوم
کلمات کلیدی
لیتیم، باتری، توانایی امتیاز، تخلیه سریع منحنی کارشناسی ارشد، مدل،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
A simple semi-empirical master curve concept, describing the rate capability of porous insertion electrodes for lithium-ion batteries, is proposed. The model is based on the evaluation of the time constants of lithium diffusion in the liquid electrolyte and the solid active material. This theoretical approach is successfully verified by comprehensive experimental investigations of the rate capability of a large number of porous insertion electrodes with various active materials and design parameters. It turns out, that the rate capability of all investigated electrodes follows a simple master curve governed by the time constant of the rate limiting process. We demonstrate that the master curve concept can be used to determine optimum design criteria meeting specific requirements in terms of maximum gravimetric capacity for a desired rate capability. The model further reveals practical limits of the electrode design, attesting the empirically well-known and inevitable tradeoff between energy and power density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 380, 15 March 2018, Pages 83-91
نویسندگان
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