Supercritical CO2 fluid assisted synthesis of Si-Fe-Fe3O4-C composites and lithium storage performance

被引：0

作者：

Lu Z. ^{[1
]}

Ma J. ^{[1
]}

Yang G. ^{[1
]}

Xia Y. ^{[1
]}

Gan Y. ^{[1
]}

Zhang J. ^{[1
]}

Zhang W. ^{[1
]}

Huang H. ^{[1
]}

机构：

[1] College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2023年 / 40卷 / 01期

关键词：

carbon dioxide; lithium storage performance; Si-Fe-Fe[!sub]3[!/sub]O[!sub]4[!/sub]-C composite material; silicon-carbon anode; supercritical fluid;

D O I：

10.13801/j.cnki.fhclxb.20220126.003

中图分类号：

学科分类号：

摘要：

Silicon-carbon anode is an important issue for the development of lithium-ion battery materials. Aiming at the problems of uneven combination and poor interfacial contact of silicon-carbon anode prepared by traditional ball milling, this paper proposes a new strategy to synthesize Si-Fe-Fe3O4-C composite by ball milling in supercritical carbon dioxide (scCO2) fluid medium. It is found that during the process of ball milling mixture of nano-silicon and mesophase carbon microspheres (MCMB) in the scCO2 medium, CO2 and Fe reacts firstly to form a uniformly dispersed Si-FeCO3-C precursor, and then in situ high temperature decomposition of FeCO3 solid phase results in final Si-Fe-Fe3O4-C product. Under the infiltration of scCO2 fluid, MCMB microspheres exfoliate into graphite flakes, and achieve ideal combination with nano-silicon and Fe-Fe3O4. The introduction of Fe-Fe3O4 in the composite has significantly improved the lithium storage capacity, cycle stability and rate performance of silicon-carbon anode, the synthesized Si-Fe-Fe3O4-C composite material maintains a reversible capacity of 1 065 mA·h·g−1 after 100 cycles at 0.2 A·g−1. The method shows the merits of facile operation procedure, easy industrial production and potential commercial application basing on the supercritical fluid permeability and strong diffusion ability. © 2023 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

引用

共 26 条

[1] OLABI A G, ONUMAEGBU C, WILBERFORCE T, Et al., Critical review of energy storage systems[J], Energy, 214, (2021)
[2] GE M Z, CAO C Y, BIESOLD G M, Et al., Recent advances in silicon-based electrodes: From fundamental research toward practical applications[J], Advanced Materials, 33, 16, (2021)
[3] GUO J P, DONG D Q, WANG J, Et al., Silicon-based lithium ion battery systems: state-of-the-art from half and full cell viewpoint[J], Advanced Functional Materials, 31, 34, (2021)
[4] JIN Y, LI S, KUSHIMA A, Et al., Self-healing SEI enables full-cell cycling of a silicon-majority anode with a coulombic efficiency exceeding 99.9%[J], Energy & Environmental Science, 10, 2, pp. 580-592, (2017)
[5] SHI Q T, ZHOU J H, ULLAH S, Et al., A review of recent developments in Si/C composite materials for Li-ion batteries[J], Energy Storage Materials, 34, pp. 735-754, (2021)
[6] ZAIDI S D A, WANG C, GYORGY B, Et al., Iron and silicon oxide doped/PAN-based carbon nanofibers as free-standing anode material for Li-ion batteries[J], Journal of Colloid and Interface Science, 569, pp. 164-176, (2020)
[7] SUN L Y, YANG L, LI J, Et al., Superior full-cell cycling and rate performance achieved by carbon coated hollow Fe3O4 nanoellipsoids for lithium ion battery[J], Electrochimica Acta, 288, pp. 71-81, (2018)
[8] YAN Y J, CHEN Y X, LI Y Y, Et al., Synthesis of Si/Fe2O3anchored rGO frameworks as high-performance anodes for Li-ion batteries[J], International Journal of Molecular Sciences, 22, 20, (2021)
[9] WANG H, DING Y, NONG J, Et al., Bifunctional NaCl template for the synthesis of Si@graphitic carbon nanosheets as advanced anode materials for lithium ion batteries[J], New Journal of Chemistry, 44, 33, pp. 14278-14285, (2020)
[10] YANG Z X, DU Y, YANG Y J, Et al., Large-scale production of highly stable silicon monoxide nanowires by radio-frequency thermal plasma as anodes for high-performance Li-ion batteries[J], Journal of Power Sources, 497, (2021)

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