کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6604357 | 1424094 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A high-performance hybrid Mg2+/Li+ battery based on hierarchical copper sulfide microflowers conversion cathode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Hybrid Mg2+/Li+ batteries featuring dendrite-free Mg anode and Li-storage cathode are promising safe energy storage systems. However, improving the energy density remains a grand challenge due to the quite limited capacities of traditional Li-intercalation cathodes. To circumvent this limitation, a new type of conversion cathode for hybrid Mg2+/Li+ batteries, microflower-like Cu9S5, is reported herein. The Cu9S5 cathode is compatible with the dual-salt Mg2+/Li+ electrolyte, and delivers a high reversible capacity of 300â¯mAh gâ1â¯at 50â¯mAâ¯gâ1 via electrochemical conversion reaction, with 94% capacity retention over 100 cycles in hybrid Mg2+/Li+ batteries. The electrode also shows an outstanding rate capability providing 155â¯mAh gâ1â¯at 1000â¯mAâ¯gâ1 and a superior long-term cycleability over 1000 cycles. This excellent performance is attributed to the hierarchical architecture of Cu9S5 which facilitates the reversible conversion reactions and stabilizes the electrode structure during discharge/charge process. This work provides new insight for the nanostructure design of stable conversion electrodes, and opens a new avenue for building safe and high-performance hybrid Mg2+/Li+ batteries for practical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 263, 10 February 2018, Pages 168-175
Journal: Electrochimica Acta - Volume 263, 10 February 2018, Pages 168-175
نویسندگان
Ting Li, Aiqiong Qin, Hongtao Wang, Mengyi Wu, Yuyue Zhang, Yujie Zhang, Daohong Zhang, Fei Xu,