کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7727635 | 1497906 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nitrogen-doped graphene assists Fe2O3 in enhancing electrochemical performance
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Fe2O3 anode suffers from drastic volume change during cycling and poor electronic conductivity, resulting in inferior electrochemical performance. To address these problems, the Fe2O3/nitrogen-doped graphene sheets hybridization strategy is proposed by a hydrothermal/annealing process. In this composite, Fe2O3 nanoparticles are tightly confined in graphene sheets matrix and the porous structure is obtained due to the crumpled and cross-like graphene framework, which can alleviate the volume expansion, maintain integrity of the electrode, and improve electrical conductivity and Li+ diffusion. As a result, benefiting from the synergistic effect of N-doped graphene sheets matrix and Fe2O3 nanoparticles, the composite exhibits a reversible capacity up to 952 mAh gâ1 at a current density of 100 mA gâ1 and excellent rate capability (348 mAh gâ1 at a current density 5000 mA gâ1).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 326, 15 September 2016, Pages 389-396
Journal: Journal of Power Sources - Volume 326, 15 September 2016, Pages 389-396
نویسندگان
Xiangfei Meng, Youlong Xu, Xiaofei Sun, Lilong Xiong, Qianwen Wang,