کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5127241 1489008 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluating the effect of solid electrolyte interphase formers on lithium depth profiles of the solid electrolyte interphase layer and bulk electrode material in LiNi0.4Mn0.4Co0.2O2/graphite pouch cells obtained with lithium nuclear reaction analysis
ترجمه فارسی عنوان
ارزيابي اثر سازندگان اینترفاز الکتروليت جامد بر پروفيل عمق ليتيوم لايه اینترفاز الکتروليت جامد و مواد الکترودهاي بزرگ در LiNi0.4Mn0.4Co0.2O2/سلول هاي قير گرافيت به دست آمده از تحليل واکنش هاي هسته اي ليتيوم
کلمات کلیدی
مشخصات عمق لیتیم؛ باتری یون لیتیوم؛ اینترفاز الکترولیت جامد؛ نیکل اکسید کبالت منگنز؛ کربنات وینیل؛ سازنده SEI ؛ غلظت لیتیم؛ خواص
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی


- First study of SEI formers effect on Li distribution within the SEI layer.
- Li content was 2.5 x greater within the SEI resulting from EC versus VC after 600 h.
- Li loss from the positive electrode was unaffected by electrolyte composition.

Lithium loss resulting from positive electrode deterioration and lithium accumulation within the solid electrolyte interphase (SEI) at the negative electrode leads to charge capacity loss in lithium-ion batteries (LIBs). We present a novel method to quantify origins of capacity loss resulting from positive electrode degradation and lithium immobilization within the SEI by comparative lithium depth profiles using Lithium Nuclear Reaction Analysis (Li-NRA). Li(Ni0.4Mn0.4Co0.2)O2/artificial graphite (NMC442/AG) pouch cells were cycled with electrolytes containing 1 M LiPF6 in either 1:1 ethylene carbonate (EC)/dimethyl carbonate (DMC) or DMC with 3% vinylene carbonate (VC) SEI former. Lithium accumulated rapidly within the SEI in cells containing EC as compared to cells containing VC. Lithium loss from the positive electrode occurred at a linear rate, after formation, which was independent of electrolyte composition tested. The technique and methods provide quantitative insight into the impact of materials on capacity loss.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Energy Storage - Volume 14, Part 1, December 2017, Pages 106-111
نویسندگان
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