کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10154701 | 1666311 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nanoflake δ-MnO2 deposited on carbon nanotubes-graphene-Ni foam scaffolds as self-standing three-dimensional porous anodes for high-rate-performance lithium-ion batteries
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Nanoflake δ-MnO2 deposited on carbon nanotubes-graphene-Ni foam scaffolds as self-standing three-dimensional porous anodes for high-rate-performance lithium-ion batteries Nanoflake δ-MnO2 deposited on carbon nanotubes-graphene-Ni foam scaffolds as self-standing three-dimensional porous anodes for high-rate-performance lithium-ion batteries](/preview/png/10154701.png)
چکیده انگلیسی
The electrification of transportation necessitates the growth of high-power-density lithium ion batteries. However, traditional graphite anodes in lithium ion batteries perform poorly especially when charged or discharged under high current density. In this work, we deposit nanoflake δ-MnO2 on the carbon nanotubes-Graphene-Nickel foam compound matrix and apply it as a self-standing anode without binder or conductive agent. This composite buffers volume change, enables more electrochemical active sites, boosts the conductivity of electrode materials and facilitates lithium-ion diffusion. The resulting lithium ion batteries with the composite anodes show improved cycle life and enhanced rate performance, yielding a high specific capacity of 1250 mAh gâ1 for 350 cycles at 0.4â¯Aâ¯gâ1 and 490 mAh gâ1 over 700 cycles at 4.0â¯Aâ¯gâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 402, 31 October 2018, Pages 373-380
Journal: Journal of Power Sources - Volume 402, 31 October 2018, Pages 373-380
نویسندگان
Xue Zhai, Zhu Mao, Guangyu Zhao, David Rooney, Naiqing Zhang, Kening Sun,