Preparation and electrochemical performance of F-doped SiO@C composite material

doi:10.12028/j.issn.2095-4239.2018.0241

Abstract

Abstract: The F-doped SiO@C composites material were synthesized via mechanical fusion and heating coating of SiO, pitch and polyfluortetraethylene (PTFE). The morphology structure and the phase composition of the samples were characterized by SEM, TEM, XRD, infrared carbon and sulfur analysis, laser particle analyzer, powder resistivity and specific surface area. Results showed that:when the dosage of PTFE was 20%, the SiO@C-F composites had the excellent electrochemical performance, witch exhibited the reversible capacity of 1426.8 mA·h/g, initial coulombic efficiency of 77.01% and capacity retention of 83.95% after 20 cycles.

Key words: F-doped, SiO@C, anode materials, lithium ion batteries

CLC Number:

TM912

LIU Xingwen, HE Jinxin, WANG Hailin, JIN Chengyou, MIAO Yonghua, XUE Chi. Preparation and electrochemical performance of F-doped SiO@C composite material[J]. Energy Storage Science and Technology, 2019, 8(S1): 56-59.

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