In order to solve the volume expansion problem of transition metal compounds in the anode field of sodium-ion batteries (SIBs),a simple and efficient high-temperature vulcanization strategy was proposed to introduce FeS/Fe3O4 heterojunction.Meanwhile,the interwoven soft-hard carbon network structure-loaded FeS/Fe3O4 composites (HCSC@FeS/Fe3O4) were prepared using high-temperature calcination with emulsified asphalt and glucose as the soft and hard carbon sources,respectively.Among them,the hard-soft interwoven porous carbon skeleton could improve the diffusion kinetics of the electrode,while the hard and soft carbons were also able to provide higher capacity and excellent conductivity,respectively.In addition,the heterojunction accelerated the electron transfer at the interface and provided more free space to mitigate the volume expansion.Benefiting from this special structure,HCSC@FeS/Fe3O4 exhibited excellent electrochemical performance,with HCSC@FeS/Fe3O4-750 maintaining a capacity of about 350mAh/g after 140 cycles at 100mA/g.Furthermore,the multiplicative performance test showed that HCSC@FeS/Fe3O4-750 still had a high discharge capacity (302mAh/g) at a higher current density (1000mA/g).
[1] Ma L,Yu L J,Liu J,et al.Construction of Ti4O7/TiN/carbon microdisk sulfur host with strong polar N-Ti-O bond for ultralong life lithium-sulfur battery[J].Energy Storage Materials,2022,44:180-189.
[2] Zhao W,Ma X,Li Y,et al.Hierarchical hydrangea-like configuration constructed from MoSe2 nanosheets anchored on core-shell Fe3O4@C nanocubes for highly stable and fast ion-transport sodium-storage anode[J].Scripta Materialia,2021,204:114147.
[3] Lin Q,Zhang S,Yu L J,et al.Recycle waste washcloth to design Fe3O4/FeS2/C heterojunction membrane as high-area capacity freestanding anode for sodium-ion batteries[J].Chemical Engineering Journal,2023,455:140945.
[4] Xu F,Zhai Y,Zhang E,et al.Ultrastable surface-dominated pseudocapacitive potassium storage enabled by edge-enriched N-doped porous carbon nanosheets[J].Angewandte Chemie,2020,132(44):19628-19635.
[5] Xue Y,Gao M,Wu M,et al.A promising hard carbon-soft carbon composite anode with boosting sodium storage performance[J].ChemElectroChem,2020,7(19):4010-4015.
[6] Hu D,Sui L,Shi J,et al.Fe3O4 nanoparticles encapsulated in graphitized and in-plane porous carbon nanocages derived from emulsified asphalt for a high-performance lithium-ion battery anode[J].Frontiers of Materials Science,2024,18(2):240687.
[7] Li Y,Song J,Pan Y,et al.Integration strategy for facile fabrication of porous carbon coated Fe3O4 nanospindles with enhanced lithium storage[J].Journal of Alloys and Compounds,2023,935:168105.
[8] Huang Y,Hu X,Li Y,et al.Demystifying the influence of precursor structure on S-doped hard carbon anode:taking glucose,carbon dots,and carbon fibers as examples[J].Advanced Functional Materials,2024,34(40):2403648.
[9] Xie L,Tang C,Bi Z,et al.Hard carbon anodes for next-generation Li-ion batteries:review and perspective[J].Advanced Energy Materials,2021,11(38):2101650.
[10] Li C,Zhang X,Wang K,et al.Nitrogen-enriched graphene framework from a large-scale magnesiothermic conversion of CO2 with synergistic kinetics for high-power lithium-ion capacitors[J].NPG Asia Materials,2021,13(1):59.
[11] Liu C,Liu X,Tan J,et al.Nitrogen-doped graphene by all-solid-state ball-milling graphite with urea as a high-power lithium ion battery anode[J].Journal of Power Sources,2017,342:157-164.
[12] Fu F,Hu M,Key J,et al.Carbon encapsulated FeS nanosheet-nanoribbon interwoven sandwich structure as efficient sodium-ion battery anodes[J].Carbon,2023,215:118469.
[13] Zhang L L,Zhao X.Carbon-based materials as supercapacitor electrodes[J].Chemical Society Reviews,2009,38(9):2520-2531.
[14] Yang G,Li X,Guan Z,et al.Insights into lithium and sodium storage in porous carbon[J].Nano Letters,2020,20(5):3836-3843.
[15] Haridas A K,Heo J,Li X,et al.A flexible and free-standing FeS/sulfurized polyacrylonitrile hybrid anode material for high-rate sodium-ion storage[J].Chemical Engineering Journal,2020,385:123453.
[16] Tao X,Li Y,Wang H G,et al.Multi-heteroatom-doped dual carbon-confined Fe3O4 nanospheres as high-capacity and long-life anode materials for lithium/sodium ion batteries[J].Journal of Colloid and Interface Science,2020,565:494-502.
[17] Li Z,Li G,Xu W,et al.Self-integrated porous leaf-like CuO nanoplate array-based anodes for high-performance lithium-ion batteries[J].ChemElectroChem,2018,5(19):2774-2780.
[18] Li M,Ma W,Tan F,et al.Fe3O4@C-500 anode derived by commercial ammonium ferric citrate for advanced lithium ion batteries[J].Journal of Power Sources,2023,574:233146.
基金资助
国家自然科学基金(51402030);重庆市技术创新与应用发展专项重点项目(CSTB2022TIAD-KPX0031);重庆市研究生导师团队建设项目(JDDSTD2022006)
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