有色金属科学与工程2026，Vol.17Issue(4)：590-599,10.DOI:10.13264/j.cnki.ysjskx.2026.04.011
双金属负载碳包覆SiO2负极材料的制备与研究
Preparation and research of bimetal-loaded carbon-coated SiO2 anode materials
摘要
Abstract
Silicon dioxide(SiO2)is considered a promising anode material for lithium-ion batteries due to its high theoretical specific discharge capacity(1 965 mAh/g)and extremely low cost.However,its high oxygen content leads to poor electrochemical activity.To address this issue,a mesoporous SiO2 with a particle size of approximately 100 nm was designed and prepared via the sol-gel method,using tetraethyl orthosilicate(TEOS)as the precursor and cetyltrimethylammonium bromide(CTAB)as the template.The prepared SiO2 particles were subsequently coated using resorcinol formaldehyde resin(RF)as the carbon precursor.Based on the above experiments,Cu2+and Fe3+were doped into the resin layer through a complexation reaction.After high-temperature carbonization,a bimetal-loaded carbon-coated material,SiO2@Cu-Fe-C,was formed.The synergistic effect generated by the bimetallic loading effectively improved the electrochemical performance of the material.The data showed that the initial Coulombic efficiency(ICE)of SiO2@Cu-Fe-C was 52.2%.It exhibited a high reversible specific discharge capacity of 719 mAh/g at a current density of 200 mA/g,and maintained an average specific discharge capacity of 570 mAh/g at a current density of 1 000 mA/g after 500 cycles.关键词
锂离子电池/SiO2负极材料/碳包覆/双金属负载Key words
lithium-ion batteries/SiO2 anode material/carbon coating/bimetal loading分类
信息技术与安全科学引用本文复制引用
周子懿,吴佳溢,王怡茗,胡兴荣,刘晓娟,王春香,李之锋..双金属负载碳包覆SiO2负极材料的制备与研究[J].有色金属科学与工程,2026,17(4):590-599,10.基金项目
江西省自然科学基金资助项目(20232BAB204027) （20232BAB204027）
