کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6617480 | 459633 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Binder-free three-dimensional porous structured metal oxides as anode for high performance lithium-ion battery
ترجمه فارسی عنوان
ایزای فلزی ساختاری متخلخل سه بعدی بدون باندینگ به عنوان آند برای باتری لیتیوم یون با کارایی بالا
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کلمات کلیدی
اکسید فلزی، واکنش جایگزین، آنود، باتری یون لیتیوم، نرخ عملکرد
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Three-dimensional porous Cu/Cu2O, CuO, CuO/NiO were prepared on Ni foam by a simple two step method which consist of a replacement reaction and subsequent thermal treatment method at various temperature. The morphology and microstructure of the samples were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electrochemical properties of the samples were evaluated by galvanostatic discharge-charge cycling, cyclic voltammetry and impedance spectral measurements on cells with lithium discs as counter electrode and reference electrode. Compared to Cu/Cu2O and CuO/NiO, the sample of CuO obtained at 400 °C exhibited the best electrochemical performance which delivered a reversible capacity of 605.3 mAh gâ1 (89.8% of the theoretical capacity) after 50 cycles at the current density of 100 mA gâ1, without noticeable capacity fading. The excellent electrochemical performance of porous CuO can be attributed to the three-dimensional porous structure, which cannot only provide large surface area but also facilitate Li+ and electron transfer, and the strong connection between active materials and Ni foam can promote better intrinsic kinetics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 105, 30 August 2013, Pages 282-288
Journal: Electrochimica Acta - Volume 105, 30 August 2013, Pages 282-288
نویسندگان
Jiwei Zhang, Mingmei Zhang, Lijuan Zhang,