کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6605011 | 1424097 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hollow carbon sphere with open pore encapsulated MnO2 nanosheets as high-performance anode materials for lithium ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hollow carbon sphere with open pore encapsulated MnO2 nanosheets as high-performance anode materials for lithium ion batteries Hollow carbon sphere with open pore encapsulated MnO2 nanosheets as high-performance anode materials for lithium ion batteries](/preview/png/6605011.png)
چکیده انگلیسی
A new structured hollow carbon spheres with an open pore (HCSO) were synthesized by introducing a pore-forming agent PEG. Unlike the conventional hollow particles, the void space is fully utilized due to the presence of the open pore. As a proof-of-concept, MnO2 nanosheets are in-situ grown on both the outer shell and the inner cavity of HCSO forming sandwich structure via a facile redox method, named MnO2@HCSO composite. Meanwhile, the distance for lithium ion diffusion greatly reduces. When tested as an anode material for lithium ion batteries, MnO2@HCSO composite exhibits increased performance compared to MnO2/HCS composites which use traditional closed HCS as carbon matrix. It can still deliver a specific capacity of 398Â mAh gâ1 based on the whole mass of composite even when the current density was increased to 5Â AÂ gâ1. This special designed structure would be extended to different fields, such as sensors and catalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 260, 10 January 2018, Pages 783-788
Journal: Electrochimica Acta - Volume 260, 10 January 2018, Pages 783-788
نویسندگان
Jun Zang, Jianchuan Ye, Hang Qian, Yu Lin, Xiangwu Zhang, Mingsen Zheng, Quanfeng Dong,