کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990012 | 1516125 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
MOF-assisted three-dimensional TiO2@C core/shell nanobelt arrays as superior sodium ion battery anodes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An original electrode, 3D TiO2@C core/shell nanobelt arrays with controllable carbon coating thickness, was successfully constructed in this work. The 3D TiO2 nanobelts were directly grown on Ti foil, and then were coated with a layer of metal-organic framework (MOF). After thermal annealing, a porous carbon layer with tunable thickness was coated onto the 3D TiO2 nanobelts through changing the MOF thickness. The as-prepared TiO2@C-2 h with 5-nm-thick carbon layer presented an excellent discharge capacity of 210.5â¯mAh gâ1 after 100 cycles at a current density of 50â¯mAâ¯gâ1, which is 38% higher than that of pure TiO2 electrode without carbon coating. Moreover, it can maintain a reversible capacity of 141â¯mAh gâ1 after 1000 cycles at a current density of 200â¯mAâ¯gâ1, and a good rate performance with 33% of capacity retention when the current density increasing from 50 to 5000â¯mAâ¯gâ1. All the results indicate that the TiO2@C core/shell nanobelt array is a promising anode for sodium-ion batteries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 769, 15 November 2018, Pages 257-263
Journal: Journal of Alloys and Compounds - Volume 769, 15 November 2018, Pages 257-263
نویسندگان
Yi Yang, Qun Fu, Huaping Zhao, Yan Mi, Wei Li, Yulian Dong, Minghong Wu, Yong Lei,