کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6611886 | 459565 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deficiencies of Chemically Reduced Graphene as Electrode in Full Li-Ion Cells
ترجمه فارسی عنوان
نقص گرافیتی کاهش یافته به عنوان الکترودهایی در سلول های لیتیونی کامل
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کلمات کلیدی
آنود بر اساس گرافن، باتری لیتیوم یون پیکربندی کامل سلولی، مقدس بودن روش فعال سازی قبل از رسیدن، روش فعال سازی تماس،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
In spite of the good electrochemical performance of graphene as electrode vs. lithium (half-cell configuration), graphene does not work in a full Li-ion cell as the delivered capacity continuously fades on cycling. The high irreversible capacity (IC) of the electrode observed in the former configuration, which is caused by the solid-electrolyte interface (SEI) formation, can be one of the causes of this shortcoming. As a remedy to this drawback, the graphene electrode was subjected to a lithiation process to form the SEI before assembling the full cell. Two lithiation methods were implemented: 1) precycling the electrode vs. a Li foil, and 2) placing the electrode in contact with a Li foil that was wetted with the electrolyte. Both methods improved the performance of the full cell, particularly the contact treatment, but the capacity retention on cycling was moderate. Moreover, not only does the electrode activation govern the electrochemical response, but factors such as the synthesis method and particle dimensions can also affect the cell performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 165, 20 May 2015, Pages 365-371
Journal: Electrochimica Acta - Volume 165, 20 May 2015, Pages 365-371
نویسندگان
Ãscar Vargas, Álvaro Caballero, Julián Morales,