کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6604891 1424098 2018 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new method to compensate impedance artefacts for Li-ion batteries with integrated micro-reference electrodes
ترجمه فارسی عنوان
یک روش جدید برای جبران مصارف امپدانس برای باتری های لیتیوم یون با یک الکترود مرجع ریزمحور
کلمات کلیدی
طیف سنج امپدانس الکتروشیمیایی، باتری های یون لیتیوم، سلول سه الکترود الکترودهای مرجع میکرو، مصنوعات اندازه گیری امپدانس،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
In order to measure the electrochemical characteristics of both electrodes inside Li-ion batteries, micro-reference electrodes (μREF) turned out to be very useful. However, measuring the electrochemical impedance with respect to μREF can lead to severe measurement artefacts, making a detailed analysis of the impedance spectra complicated. In the present work a new method is developed in which high-frequency measurement artefacts can be compensated. A theoretical analysis, using equivalent circuit models of the measurement setups, shows that if two different impedance measurements are averaged, the impedance contributions from the measurement leads can be completely eliminated. The theoretical analysis is validated using Li-ion batteries with seven integrated μREF, having all different impedances. The measurement results show that artefacts are dominating for high-impedance μREF in the high frequency range. However, these artefacts can be fully compensated by averaging two separate impedance measurements, as predicted by theory. This easily makes it possible to perform artefact-free impedance measurements, even at high frequencies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 259, 1 January 2018, Pages 517-533
نویسندگان
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