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通过镁热还原法制备的嵌入式硅/石墨烯复合材料作为锂离子电池负极材料

Embedded Si/Graphene Composite Fabricated by Magnesium-Thermal Reduction as Anode Material for Lithium-Ion Batteries.

作者信息

Zhu Jiangliu, Ren Yurong, Yang Bo, Chen Wenkai, Ding Jianning

机构信息

School of Materials Science and Engineering, Changzhou University, Changzhou, 213000, China.

Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou, 213164, Jiangsu, China.

出版信息

Nanoscale Res Lett. 2017 Dec 16;12(1):627. doi: 10.1186/s11671-017-2400-6.

DOI:10.1186/s11671-017-2400-6
PMID:29247261
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5732117/
Abstract

Embedded Si/graphene composite was fabricated by a novel method, which was in situ generated SiO particles on graphene sheets followed by magnesium-thermal reduction. The tetraethyl orthosilicate (TEOS) and flake graphite was used as original materials. On the one hand, the unique structure of as-obtained composite accommodated the large volume change to some extent. Simultaneously, it enhanced electronic conductivity during Li-ion insertion/extraction. The MR-Si/G composite is used as the anode material for lithium ion batteries, which shows high reversible capacity and ascendant cycling stability reach to 950 mAh·g at a current density of 50 mA·g after 60 cycles. These may be conducive to the further advancement of Si-based composite anode design.

摘要

通过一种新颖的方法制备了嵌入式硅/石墨烯复合材料，该方法是在石墨烯片上原位生成SiO颗粒，然后进行镁热还原。以正硅酸乙酯（TEOS）和片状石墨为原料。一方面，所得复合材料的独特结构在一定程度上适应了大体积变化。同时，它在锂离子嵌入/脱出过程中提高了电子导电性。MR-Si/G复合材料用作锂离子电池的负极材料，在60次循环后，在50 mA·g的电流密度下显示出高可逆容量，且循环稳定性上升至950 mAh·g。这些可能有利于硅基复合负极设计的进一步发展。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/cb0d19b63728/11671_2017_2400_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/a981f77efc45/11671_2017_2400_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/afbad51dbea4/11671_2017_2400_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/e058d14e855a/11671_2017_2400_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/5e9b1ec8e975/11671_2017_2400_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/2d646314885e/11671_2017_2400_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/483fdbe1cae7/11671_2017_2400_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/57088ffc2c07/11671_2017_2400_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/977105d708ce/11671_2017_2400_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/cb0d19b63728/11671_2017_2400_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/a981f77efc45/11671_2017_2400_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/afbad51dbea4/11671_2017_2400_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/e058d14e855a/11671_2017_2400_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/5e9b1ec8e975/11671_2017_2400_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/2d646314885e/11671_2017_2400_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/483fdbe1cae7/11671_2017_2400_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/57088ffc2c07/11671_2017_2400_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/977105d708ce/11671_2017_2400_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f9d/5732117/cb0d19b63728/11671_2017_2400_Fig9_HTML.jpg

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