کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5149750 | 1497891 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Confined selenium within metal-organic frameworks derived porous carbon microcubes as cathode for rechargeable lithium-selenium batteries
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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چکیده انگلیسی
Unique hierarchically porous carbon microcubes (CMCs) consists of irregular bubbles derived from metal organic frameworks (MOFs) have been prepared via simple hydrothermal synthesis method and carbonization treatment. Selenium nanoparticles are uniformly dispersed in the hierarchical porous structure of CMCs by a typical melt-diffusion process, and the yielding Se/CMCs composite is enabled as a cathode material for lithium-selenium rechargeable batteries. In the carbonate-based electrolyte, with Se loading of nearly â¼50 wt%, the Se/CMCs composite exhibits an ultrahigh initial discharge specific capacity of 780.4 mAh gâ1 and still retains a reversible capacity of 425.2 mAh gâ1 after 100 cycles at 0.2 C. Specially, these hollow structure CMCs with high conductivity contribute to the outstanding electrochemical properties by effectively decreasing the charge transfer resistance and suppressing polyselenides dissolution in carbonate electrolyte.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 341, 15 February 2017, Pages 53-59
Journal: Journal of Power Sources - Volume 341, 15 February 2017, Pages 53-59
نویسندگان
Ting Liu, Min Jia, Yan Zhang, Jin Han, Yi Li, ShuJuan Bao, Dingyu Liu, Jian Jiang, Maowen Xu,