电源技术2025，Vol.49Issue(2)：317-322,6.DOI:10.3969/j.issn.1002-087X.2025.02.008
中空多孔硅负极材料的制备及性能研究
Study on preparation and performance of hollow porous silicon anode materials
郑丽华 1姚则庆 2张育红 3陈冬 1陈建 2涂江平4
作者信息
- 1. 浙江南都电源动力股份有限公司,浙江 杭州 311305||浙江华宇钠电新能源科技有限公司,浙江 杭州 311308
- 2. 浙江华宇钠电新能源科技有限公司,浙江 杭州 311308
- 3. 浙江南都电源动力股份有限公司,浙江 杭州 311305
- 4. 浙江大学材料科学与工程学院,浙江 杭州 310012
- 折叠
摘要
Abstract
As the anode material with the highest theoretical capacity for lithium-ion batteries,the sili-con material has the characteristics of high capacity,abundant resources and environmentally friendly.The Mg2Si as a reducing agent was uniformly coated on the surface of SiO2 by mechanical ball milling,and then the hollow porous silicon anode material was obtained by high temperature re-duction reaction and acid dipping treatment.The structure and morphology of the obtained materi-als were characterized,and the electrochemical lithium storage properties were studied.The results indicate that the Mg2Si as the reducing agent can effectively reduce the reaction heat production,and the obtained silicon material has the hollow spherical structure,which retains the original SiO2 struc-ture well.In addition,the outer spherical shell is a porous structure,and the large cavity and abun-dant holes provide the sufficient buffer space for the volume expansion of silicon material,so as to ef-fectively release the stress during the volume expansion of silicon.Benefit from this,the obtained ma-terial has the advantages of high capacity and cyclic stability as the anode material for lithium-ion batteries.关键词
锂离子电池/硅/中空/多孔Key words
lithium-ion batteries/silicon/hollow structure/porous structure分类
信息技术与安全科学引用本文复制引用
郑丽华,姚则庆,张育红,陈冬,陈建,涂江平..中空多孔硅负极材料的制备及性能研究[J].电源技术,2025,49(2):317-322,6.
