Electrochemical performance of the series of FexTi2-2xNb10+xO29 solid solutions as anodes for lithium-ion batteries

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Electrochemical performance of the series of FexTi2-2xNb10+xO29 solid solutions as anodes for lithium-ion batteries. / Tsydypylov, D. Z.; Shindrov, A. A.; Kosova, N. V.

In: Journal of Solid State Electrochemistry, 31.05.2025.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{2006b63e240046b18b71ca422a7aaa90,

title = "Electrochemical performance of the series of FexTi2-2xNb10+xO29 solid solutions as anodes for lithium-ion batteries",

abstract = "The series of the FexTi2-2xNb10+xO29 solid solutions (x = 0.0, 0.4, 0.5, 0.6, 1.0) with the monoclinic Wadsley-Roth crystallographic shear structure were prepared by the mechanochemically assisted solid-state synthesis and studied as anode materials for lithium-ion batteries. The phase purity of the synthesized samples was confirmed by X-ray powder diffraction and M{\"o}ssbauer spectroscopy. The galvanostatic intermittent titration technique (GITT) results show that with an increase in the iron content in FexTi2-2xNb10+xO29, the Li+ diffusion coefficient, DLi+, increases at the plateau region at 1.67 V, whereas it decreases in the region at 1.5–1.2 V. Fe0.5TiNb10.5O29 represents a compromise between these two correlations; therefore, this sample has the highest average DLi+ among the other FexTi2-2xNb10+xO29 samples. Therefore, the optimal composition, Fe0.5TiNb10.5O29, exhibits the value of the specific charge capacity of 230 and 197 mAh g−1 at the cycling rates of 10C and 20C, respectively, which is higher than those of Ti2Nb10O29 (167 and 93 mAh g−1) and FeNb11O29 (157 and 80 mAh g−1).",

keywords = "Anode material, FeNb11O29, Lithium-ion batteries, Solid-state synthesis, Ti2Nb10O29",

author = "Tsydypylov, {D. Z.} and Shindrov, {A. A.} and Kosova, {N. V.}",

note = "This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for the Institute of Solid State Chemistry and Mechanochemistry SB RAS (Project FWUS-21-0006).",

year = "2025",

month = may,

day = "31",

doi = "10.1007/s10008-025-06344-8",

language = "English",

journal = "Journal of Solid State Electrochemistry",

issn = "1432-8488",

publisher = "Springer",

}

RIS

TY - JOUR

T1 - Electrochemical performance of the series of FexTi2-2xNb10+xO29 solid solutions as anodes for lithium-ion batteries

AU - Tsydypylov, D. Z.

AU - Shindrov, A. A.

AU - Kosova, N. V.

N1 - This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for the Institute of Solid State Chemistry and Mechanochemistry SB RAS (Project FWUS-21-0006).

PY - 2025/5/31

Y1 - 2025/5/31

N2 - The series of the FexTi2-2xNb10+xO29 solid solutions (x = 0.0, 0.4, 0.5, 0.6, 1.0) with the monoclinic Wadsley-Roth crystallographic shear structure were prepared by the mechanochemically assisted solid-state synthesis and studied as anode materials for lithium-ion batteries. The phase purity of the synthesized samples was confirmed by X-ray powder diffraction and Mössbauer spectroscopy. The galvanostatic intermittent titration technique (GITT) results show that with an increase in the iron content in FexTi2-2xNb10+xO29, the Li+ diffusion coefficient, DLi+, increases at the plateau region at 1.67 V, whereas it decreases in the region at 1.5–1.2 V. Fe0.5TiNb10.5O29 represents a compromise between these two correlations; therefore, this sample has the highest average DLi+ among the other FexTi2-2xNb10+xO29 samples. Therefore, the optimal composition, Fe0.5TiNb10.5O29, exhibits the value of the specific charge capacity of 230 and 197 mAh g−1 at the cycling rates of 10C and 20C, respectively, which is higher than those of Ti2Nb10O29 (167 and 93 mAh g−1) and FeNb11O29 (157 and 80 mAh g−1).

AB - The series of the FexTi2-2xNb10+xO29 solid solutions (x = 0.0, 0.4, 0.5, 0.6, 1.0) with the monoclinic Wadsley-Roth crystallographic shear structure were prepared by the mechanochemically assisted solid-state synthesis and studied as anode materials for lithium-ion batteries. The phase purity of the synthesized samples was confirmed by X-ray powder diffraction and Mössbauer spectroscopy. The galvanostatic intermittent titration technique (GITT) results show that with an increase in the iron content in FexTi2-2xNb10+xO29, the Li+ diffusion coefficient, DLi+, increases at the plateau region at 1.67 V, whereas it decreases in the region at 1.5–1.2 V. Fe0.5TiNb10.5O29 represents a compromise between these two correlations; therefore, this sample has the highest average DLi+ among the other FexTi2-2xNb10+xO29 samples. Therefore, the optimal composition, Fe0.5TiNb10.5O29, exhibits the value of the specific charge capacity of 230 and 197 mAh g−1 at the cycling rates of 10C and 20C, respectively, which is higher than those of Ti2Nb10O29 (167 and 93 mAh g−1) and FeNb11O29 (157 and 80 mAh g−1).

KW - Anode material

KW - FeNb11O29

KW - Lithium-ion batteries

KW - Solid-state synthesis

KW - Ti2Nb10O29

UR - https://www.mendeley.com/catalogue/5ee7058f-8c2c-3962-a796-f440d0cb6122/

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-105006935033&origin=inward&txGid=9f1ea4a7d875c4f2beb737d4fffff774

U2 - 10.1007/s10008-025-06344-8

DO - 10.1007/s10008-025-06344-8

M3 - Article

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

SN - 1432-8488

M1 - 2304617

ER -

ID: 67456494