کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8036021 | 1518058 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication of thin silica layer-coated magnetite clusters (nFe3O4/silica) as anode materials for improved Li-ion batteries
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Fabrication of thin silica layer-coated magnetite clusters (nFe3O4/silica) as anode materials for improved Li-ion batteries Fabrication of thin silica layer-coated magnetite clusters (nFe3O4/silica) as anode materials for improved Li-ion batteries](/preview/png/8036021.png)
چکیده انگلیسی
Thin silica layer-coated magnetite clusters (nFe3O4/silica) were prepared as active anode materials for Li-ion batteries. First, citrate-capped magnetites (C-Fe3O4) were synthesized by the co-precipitation method. Then, 3-aminopropyl trimethoxysilane (APTMS)-linked magnetite clusters (A-nFe3O4) were formed via electrostatic interactions between carboxylate groups of C-Fe3O4 and amine groups of APTMS, and the resulting A-nFe3O4 were heat-treated under N2 flow for 2 h. The calcined A-nFe3O4 at 500 °C exhibited the X-ray diffraction (XRD) patterns mostly attributed to fcc crystalline phases of Fe3O4, whereas the calcined C-Fe3O4 at 500 °C exhibited the XRD patterns attributed to the mixture of fcc crystalline phases of Fe3O4 and hexagonal crystalline phases of α-Fe2O3. The calcined A-nFe3O4 (i.e., nFe3O4/silica) exhibited the improved retention capacity by more than ca. 50% after 50 cycles as compared to the pristine iron oxides. The improved retention capacity of nFe3O4/silica was attributed to the enhanced chemical stability and large surface area of the thin silica layer-coated iron oxide clusters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 546, 1 November 2013, Pages 200-204
Journal: Thin Solid Films - Volume 546, 1 November 2013, Pages 200-204
نویسندگان
Hang-Deok Oh, Sang-Wha Lee,