کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5461146 | 1516184 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
MnO@C nanorods derived from metal-organic frameworks as anode for superiorly stable and long-life sodium-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Porous MnO@C nanorods were synthesized simply by annealing Mn-based metal-organic frameworks precursor. The morphology, structure and electrochemical performance of MnO@C hybrid were characterized by scanning electron microscopy, nitrogen adsorption/desorption isotherms, galvanostatic charge/discharge tests, cyclic voltammetry and electrochemical impendence spectroscopy. When used as anode material for sodium-ion batteries, the MnO@C hybrid exhibits a high reversible specific capacity of 260 mAh gâ1 after 100 cycles at a current density of 50 mA gâ1. When the current density is increased to 2 A gâ1, the MnO@C delivers a superior long-life cycling performance with a capacity of 140 mAh gâ1 at very high current density of 2 A gâ1. The excellent electrochemical performance of MnO@C can be attributed to its unique porous structure with MnO nanoparticles embedded in carbon matrix, which can apparently increase the electrical conductivity and buffer the volume change during the charge/discharge process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 710, 5 July 2017, Pages 575-580
Journal: Journal of Alloys and Compounds - Volume 710, 5 July 2017, Pages 575-580
نویسندگان
Xiaojie Zhang, Guang Zhu, Dong Yan, Ting Lu, Likun Pan,