用于锂离子电池的高性能SiOx/C/石墨烯复合负极材料*

doi:10.11896/j.issn.1005-023X.2017.016.004

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Abstract A SiO_x/C/graphene composite anode for lithium ion batteries with excellent electrochemical performance was prepared from SiO, SBR and graphene via the disproportionation treatment of SiO at high temperature, mechanical milling, spray drying and pyrolysis. The phase composition, morphology and electrochemical performance of the composites were detected by X-ray diffractometer (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), energy disperse spectroscopy (EDS) and constant current charge-discharge test. The electrochemical test results revealed that the initial discharge capacity of pyrolytic SiO_x/C/graphene composite anode material was 1 807 mAh/g. The reversible capacity reached 1 349 mAh/g and the Coulombic efficiency was 99.1% after 100 cycles, indicating a much higher cyclic stability compared to the SiO_x/C and SiO_x/C/graphene precursors, along with a good rate performance.

Key words： lithium-ion battery SiO_x/C/graphene anode material high-temperature pyrolysis cyclic performance

Published: 07 May 2018

CLC number:

TM912.9

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	Articles by authors
	LI Wenchao
	WANG Ying
	TANG Renheng
	XIA Wenming
	XIAO Fangming
	WANG Huakun
	HUANG Ling
	SUN Tai

Cite this article:

LI Wenchao,WANG Ying,TANG Renheng, et al. A High-performance SiO_x/C/graphene Composite Anode for Lithium Ion Batteries[J]. Materials Reports, 2017, 31(16): 16-20.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.016.004 OR http://www.mater-rep.com/EN/Y2017/V31/I16/16

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