کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7702490 1496859 2018 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One-pot sonochemical synthesis of magnetite@reduced graphene oxide nanocomposite for high performance Li ion storage
ترجمه فارسی عنوان
سنتز سونو شیمیایی یک سینی از نانوکامپوزیت گرافیتی مگنتیت @ برای ذخیره سازی یون لیتیوم با کارایی بالا
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی
In this research, we introduce a one-pot sonochemical method for the fabrication of magnetite@reduced graphene oxide (Fe3O4@rGO) nanocomposite as anode material for Li-ion batteries. Fe3O4@rGO is synthesized under ultrasonic irradiations by using iron (II) salt and GO as raw materials. An in-situ oxidation-reduction occurs between GO and Fe2+ during the ultrasonic chemical reaction process. Fe3O4 particles with the size of ∼20 nm are uniformly deposited on the surface of rGO nanosheets. The electrochemical activity of Fe3O4@rGO is systematically evaluated as an anode material in Li-ion battery. Li-ion cells using Fe3O4@rGO as electrode deliver high discharge and charge capacities of 1433.6 and 907.8 mAh g−1 in the initial cycle at 200 mA g−1. Even performed at 500 and 5000 mA g−1, it is able to deliver reversible capacities of 846.4 and 355.6 mAh g−1, respectively, demonstrating outstanding Li-ion storage performance. This research presents a straightforward and efficient method for the fabrication of Fe3O4@rGO, which holds great potential in synthesis of other metal oxides on graphene sheets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 45, July 2018, Pages 167-172
نویسندگان
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