کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6602363 1424076 2018 38 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrophoretic deposition of carbon nanofibers/silicon film with honeycomb structure as integrated anode electrode for lithium-ion batteries
ترجمه فارسی عنوان
رسوب الکتروفورز نانوبلورهای کربنی / فیلم سیلیکون با ساختار لانه زنبوری به عنوان یک الکترود آنود یکپارچه برای باتری های لیتیوم یون
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Silicon is considered to be one of the most promising substitutes for tradition graphite anode due to its highest theoretical specific capacity (4200 mAh g−1) in nature. However, the poor electronic conductivity and huge volume change during lithiation/delithiation process cause serious electrode polarization and the active particle cracking, resulting in significant capacity fading and therefore greatly limit their commercial application. Herein, we report a novel method-electrophoretic deposition (EPD) to prepare the CNFs/Si film with honeycomb structure as an integrated anode electrode without additional binders and conductive agents. The electrode film can be formed by the codeposition of CNFs and Si nanospheres onto the copper foil. Moreover, lithium tetraborate (Li2B4O7) has been proved to play a critical role on the structure and morphology of the electrode by influencing the migration rate and double electric layer of charged particles during the EPD process. As a result, the CNFs/Si electrode with nanosized Si particles homogeneously distributed in the CNFs matrix prepared by EPD method exhibits excellent capacity retention with a reversible capacity of 670 mAh g−1 after 100 cycles at a current density of 400 mA g−1 and good rate performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 281, 10 August 2018, Pages 312-322
نویسندگان
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