化工新型材料

化工新型材料 ›› 2026, Vol. 54 ›› Issue (2) : 182-187. DOI: 10.19817/j.cnki.issn1006-3536.2026.02.008

科学研究

Si@TiB₂/C复合物的制备及其储锂特性研究

^1*

作者信息 +

Study on preparation of Si@TiB₂/C composites and their lithium storage characteristics

Li Zhou¹, Qing Mingyang¹, Li Rui¹, Chen Kaiwen¹, Wang Jin², Zhao Shuo¹

Author information +

文章历史 +

Received		Published
2025-01-13		2026-02-20
Issue Date	Revised Date
2026-02-12	2025-01-13

PDF

摘要

采用溶剂热、熔盐辅助高温处理和甲苯气相沉积相结合的方法在多孔硅颗粒表面构筑二硼化钛(TiB₂)与碳双组分包覆层,制备了多孔硅@二硼化钛/炭(Si@TiB₂/C)复合物,通过X射线衍射仪、X射线光电子能谱仪、扫描电子显微镜和透射电子显微镜等表征手段,对Si@TiB₂/C复合物的结构特征进行分析,并研究复合物作为锂离子电池负极材料的电化学性能。结果表明:Si@TiB₂/C复合物具有比Si@TiB₂和Si@C复合物更优异的电化学性能,在电流密度0.2A/g、0.5A/g、1.0A/g、2.0A/g、3.0A/g、5.0A/g和8.0A/g条件下其可逆比容量分别为1254mAh/g、1052mAh/g、828mAh/g、645mAh/g、577mAh/g、500mAh/g和401mAh/g;在电流密度1.0A/g条件下,循环400次后可逆比容量为627mAh/g,容量保持率为73.0%;良好的倍率和循环性能主要归功于硅颗粒表面复合包覆层中各组分的协同作用。

Abstract

A porous silicon@titanium diboride/carbon (Si@TiB₂/C) composite was synthesized by constructing a dual-component coating layer of TiB₂ and C on the surface of porous silicon particles using solvothermal,molten salt-assisted high-temperature treatment,and the following toluene vapor deposition.The structure of the as-prepared Si@TiB₂/C composite was characterized by X-ray diffraction,X-ray photoelectron spectroscopy,scanning electron microscopy,and transmission electron microscopy,and the electrochemical performance of the Si@TiB₂/C composite as anode material for lithium-ion batteries was also investigated.The results showed the Si@TiB₂/C composites exhibited better electrochemical performance than Si@TiB₂ and Si@C composites.Their reversible specific capacities at current densities of 0.2,0.5,1.0,2.0,3.0,5.0,8.0A/g were 1254,1052,828,645,577,500,401 mAh/g,respectively.The specific capacity was 627mAh/g after 400 cycles at 1.0A/g,with a capacity retention rate of 73.0%.The excellent rate capabilities and cycling performance of Si@TiB₂/C composites should be attributed to the synergistic effect of the components in the coating layer.

关键词

Si@TiB₂/C复合物 / 负极材料 / 电化学性能 / 锂离子电池

Key words

Si@TiB₂/C composites / anode materials / electrochemical performance / Li-ion batteries

引用本文

引用格式 ▾

Si@TiB₂/C复合物的制备及其储锂特性研究[J]. 化工新型材料, 2026, 54(2): 182-187 DOI:10.19817/j.cnki.issn1006-3536.2026.02.008

登录浏览全文

4963

注册一个新账户忘记密码

参考文献

原文顺序 | 出版日期 | 本文引用

[1] Tang J,Wu F,Dai X,et al.Robust MXene adding enables the stable interface of silicon anodes for high-performance Li-ion batteries[J].Chemical Engineering Journal,2023,452:139139.
[2] Tan D H S,Chen Y T,Yang H,et al.Carbon-free high-loading silicon anodes enabled by sulfide solid electrolytes[J].Science,2021,373(6562):1494-1499.
[3] Chen H,Wu Z,Su Z,et al.A mechanically robust self-healing binder for silicon anode in lithium ion batteries[J].Nano Energy,2021,81:105654.
[4] Lu Z D,Liu N,Lee H W,et al.Nonfilling carbon coating of porous silicon micrometer-sized particles for high-perfor-mance lithium battery anodes[J].ACS Nano,2015,9(3):2540-2547.
[5] Wang K,Pei S E,He Z S,et al.Synthesis of a novel porous si-licon microsphere@carbon core-shell composite via in situ MOF coating for lithium ion battery anodes[J].Chemical Engineering Journal,2019,356:272-281.
[6] Yu R,Pan Y,Jiang Y,et al.Regulating lithium transfer pathway to avoid capacity fading of nano Si through sub-nano scale interfused SiOx /C coating[J].Advanced Materials,2023,35(49):2306504.
[7] Man Q Y,An Y L,Liu C K,et al.Interfacial design of silicon/carbon anodes for rechargeable batteries:a review[J].Journal of Energy Chemistry,2023,76:576-600.
[8] Jiao X,Tian Y,Zhang X.Hollow Si nanospheres with amorphous TiO₂ layer used as anode for high-performance Li-ion battery[J].Applied Surface Science,2021,566:150682.
[9] Li Y,Tian Y,Fu Y,et al.Dual immobilization of porous Si by graphene supported anatase TiO₂/carbon for high-perfor-mance and safe lithium storage[J].Journal of Colloid and Interface Science,2024,658:12-21.
[10] Huang W,Zhao S,Wang J,et al.Contribution of TiN to the enhanced cycling stability of Si@TiN/C composites as anode materials for Li-ion batteries[J].Journal of Electroanalytical Chemistry,2022,906:116010.
[11] Xian X,Ran C,Nai C,et al.Characterization of the location of coke deposited on spent HZSM-5 zeolite by special temperature-programmed oxidation and isothermal oxidation methods[J].Applied Catalysis A:General,2017,547:37-51.
[12] Du J,Zhu R,Chen Q,et al.In situ synthesis of stable silicon carbide-reinforced silicon nanosheets from organoclay for high-performance lithium-ion battery anodes[J].Applied Surface Science,2023,617:156566.
[13] Liu K F,Feng J R,Guo J,et al.(1-10) Facet-dominated TiB₂ nanosheets with high exposure of dual-atom-sites for enhanced polysulfide conversion in Li-S batteries[J].Advanced Functional Materials,2024,34:2314657.
[14] Lu X,Liu W,Ouyang J,et al.Distinct surface hydration behaviors of boron-rich boride thin film coatings[J].Applied Surface Science,2014,311:749-752.
[15] Chen X Q,Xiong Y H,Du J,et al.Improving interfacial and electrical properties of HfO₂/SiO₂/p-Si stacks with N₂-plasma-treated SiO₂ interfacial layer[J].Rare Metals,2017,42(6):2081-2086.
[16] Zhou A,Wang W,Liu Q,et al.Stable,fast and high-energy-density LiCoO₂ cathode at high operation voltage enabled by glassy B₂O₃ modification[J].Journal of Power Sources,2017,362:131-139.
[17] Xiang Q,Lv K,Yu J.Pivotal role of fluorine in enhanced photocatalytic activity of anatase TiO₂ nanosheets with dominant (001) facets for the photocatalytic degradation of acetone in air[J].Applied Catalysis B:Environmental,2010,96(3/4):557-564.
[18] He X,Wu M,Ao Z,et al.Metal-organic frameworks derived C/TiO₂ for visible light photocatalysis:simple synthesis and contribution of carbon species[J].Journal of Hazardous Materials,2021,403:124048.
[19] Tian Y,An Y L,Feng J.Flexible and freestanding silicon/MXene composite papers for high-performance lithium-ion batteries[J].ACS Applied Materials & Interfaces,2019,11(10):10004-10011.
[20] Li P,Hwang J Y,Sun Y K.Nano/microstructured silicon-graphite composite anode for high-energy-density Li-ion battery[J].ACS Nano,2019,13(2):2624-2633.
[21] Wang Z,Yang N,Ren L,et al.Core-shell structured SiO@C with controllable mesopores as anode materials for lithium-ion batteries[J].Microporous and Mesoporous Materials,2020,307:110480.
[22] Streejith O V,Indu M S,George V A,et al.Electrochemical characteristics of Ge incorporated Li₄Ti₅O₁₂ as an anode for Li-ion battery applications[J].Materials Today Communications,2021,27:102273.