کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1133116 1489016 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multi-scale investigation of thickness changes in a commercial pouch type lithium-ion battery
ترجمه فارسی عنوان
تحقیقات چندمقیاسی از تغییرات ضخامت در یک باتری یون لیتیوم نوع کیسه ای تجاری
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی


• The cathode contributes significantly to the thickness change of the battery.
• The cathode expands linearly by 1.8% with the delithiated capacity.
• The anode shows a thickness change of 5.2% within the battery's operating range.
• Structured-light 3D scanning is applied to study the displacement distribution.

The thickness change of a commercial pouch type lithium-ion battery with a graphite anode and a LiCoO2 cathode is investigated at multiple scales. The fraction of anode and cathode expansion in the total thickness change of the battery is derived by dilatometry and 1D battery displacement measurements. The LiCoO2 cathode shows a thickness change of 1.8% and the graphite anode expands by 5.2% within the battery's operating range. Both anode and cathode expansion sum up in an overall thickness change of 2.4% of the pouch battery including the nonactive material. The changes in the differential displacement curve of the battery are related to phase transitions in the graphite anode, which correlate with differential potential curves. Furthermore, the thickness change of the battery is investigated by structured-light 3D scanning. Using this contactless technique, the spatial distribution of the thickness change and the impact of the pouch packaging is visualized. The pouch foil shows to have only a small influence on the displacement distribution. In sum, the results of the applied techniques at different scales correlate well and provide a better understanding of the intercalation-induced volumetric changes in lithium-ion batteries.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Energy Storage - Volume 6, May 2016, Pages 213–221
نویسندگان
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