SiO2 doped hard carbon as anode material for lithium ion batteries
DENG Xian-mei, ZHANG Qing-yin
State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
Abstract: RF/SiO2 composite material is prepared through spray drying technology to dope nano-silica into resorcinol formaldehyde resin that is synthesized from resorcinol and formaldehyde.Then resorcinol-formaldehyde resin-based hard carbon/silica composite material (RFHC/SiO2) is obtained by carbonization of RF/SiO2 composite material.Structural characterization shows that RFHC/SiO2 composite exhibits a large specific surface area of 929 m2·g-1 and rich mesoporous structure.Moreover,silica distributes uniformly in hard carbon structure.As RFHC/SiO2 composite containing 5% of SiO2 is used as anode materials for lithium ion batteries,it shows a reversible capacity as high as 850 mA·h·g-1,showing a good rate performance.
邓仙梅, 张庆印. SiO2掺杂硬炭作锂离子电池负极材料的研究[J]. 现代化工, 2020, 40(11): 82-86.
DENG Xian-mei, ZHANG Qing-yin. SiO2 doped hard carbon as anode material for lithium ion batteries. Modern Chemical Industry, 2020, 40(11): 82-86.
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