کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5148820 | 1497870 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High performance binder-free SiOx/C composite LIB electrode made of SiOx and lignin
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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چکیده انگلیسی
A high performance binder-free SiOx/C composite electrode was synthesized by mixing SiOx particles and Kraft lignin in a cryo-mill followed by heat treatment at 600 °C. After the heat treatment, lignin formed a conductive matrix hosting SiOx particles, ensuring electronic conductivity, connectivity, and accommodation of volume changes during lithiation/delithiation. As the result, no conventional binder or conductive agent was necessary. When electrochemically cycled, the composite electrode delivered excellent performance, maintaining â¼900 mAh gâ1 after 250 cycles at a rate of 200 mA gâ1, and good rate capability. The robustness of the electrode was also examined by post-cycling SEM images, where few cracks were observed. The excellent electrochemical performance can be attributed to the comparatively small volume change of SiOx-based electrodes (160%) and the flexibility of the lignin derived carbon matrix to accommodate the volume change. This work should stimulate further interests in using bio-renewable resources in making advanced electrochemical energy storage systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 362, 15 September 2017, Pages 236-242
Journal: Journal of Power Sources - Volume 362, 15 September 2017, Pages 236-242
نویسندگان
Tao Chen, Jiazhi Hu, Long Zhang, Jie Pan, Yiyang Liu, Yang-Tse Cheng,