A Bicontinuous Nanostructure Induced in Lithiated Iron Fluoride Electrodes of Lithium-ion Batteries Investigated by Small-Angle X-ray Scattering

Hironobu Hori; Chikako Ishikawa; Atsushi Inoishi; Hikari Sakaebe; Shigeto Okada

doi:10.5796/electrochemistry.22-00040

A Bicontinuous Nanostructure Induced in Lithiated Iron Fluoride Electrodes of Lithium-ion Batteries Investigated by Small-Angle X-ray Scattering

Hironobu Hori, Chikako Ishikawa, Atsushi Inoishi, Hikari Sakaebe, Shigeto Okada

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

Abstract

In a conversion-type electrode material of lithium-ion batteries, a phase separation SAXS instrumentation phenomenon is induced by charge-discharge reaction. In this study, the spatial periodicity of phase-separated nanostructures induced in the discharged ferrous fluoride (FeF2) electrodes were investigated using the small-angle X-ray scattering (SAXS) method. The SAXS results of discharged FeF2 resembled the scattering results of the bicontinuous structures via spinodal decomposition. Thus, the SAXS results showed that the discharged FeF2 electrodes were modulated nanostructures with a spatial periodicity. SAXS measurements also showed that the size of the discharged FeF2 nanostructures was dependent on the cycle number. These SAXS finding on the morphological evolution of the nanoscale structure of conversion electrodes should be useful to reveal the mechanism of conversion reactions.

Original language	English
Article number	077007
Journal	Electrochemistry
Volume	90
Issue number	7
DOIs	https://doi.org/10.5796/electrochemistry.22-00040
Publication status	Published - 2022

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Electrochemistry

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10.5796/electrochemistry.22-00040

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title = "A Bicontinuous Nanostructure Induced in Lithiated Iron Fluoride Electrodes of Lithium-ion Batteries Investigated by Small-Angle X-ray Scattering",

abstract = "In a conversion-type electrode material of lithium-ion batteries, a phase separation SAXS instrumentation phenomenon is induced by charge-discharge reaction. In this study, the spatial periodicity of phase-separated nanostructures induced in the discharged ferrous fluoride (FeF2) electrodes were investigated using the small-angle X-ray scattering (SAXS) method. The SAXS results of discharged FeF2 resembled the scattering results of the bicontinuous structures via spinodal decomposition. Thus, the SAXS results showed that the discharged FeF2 electrodes were modulated nanostructures with a spatial periodicity. SAXS measurements also showed that the size of the discharged FeF2 nanostructures was dependent on the cycle number. These SAXS finding on the morphological evolution of the nanoscale structure of conversion electrodes should be useful to reveal the mechanism of conversion reactions.",

author = "Hironobu Hori and Chikako Ishikawa and Atsushi Inoishi and Hikari Sakaebe and Shigeto Okada",

note = "Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) of Japan under the Research and Development Initiative for Scientific Innovation of the New Generation Battery 2 (RISING2) project (JPNP16001). Publisher Copyright: {\textcopyright} The Author(s) 2022. Published by ECSJ.",

year = "2022",

doi = "10.5796/electrochemistry.22-00040",

language = "English",

volume = "90",

journal = "Electrochemistry",

issn = "1344-3542",

publisher = "The Electrochemical Society of Japan",

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T1 - A Bicontinuous Nanostructure Induced in Lithiated Iron Fluoride Electrodes of Lithium-ion Batteries Investigated by Small-Angle X-ray Scattering

AU - Hori, Hironobu

AU - Ishikawa, Chikako

AU - Inoishi, Atsushi

AU - Sakaebe, Hikari

AU - Okada, Shigeto

N1 - Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) of Japan under the Research and Development Initiative for Scientific Innovation of the New Generation Battery 2 (RISING2) project (JPNP16001). Publisher Copyright: © The Author(s) 2022. Published by ECSJ.

PY - 2022

Y1 - 2022

N2 - In a conversion-type electrode material of lithium-ion batteries, a phase separation SAXS instrumentation phenomenon is induced by charge-discharge reaction. In this study, the spatial periodicity of phase-separated nanostructures induced in the discharged ferrous fluoride (FeF2) electrodes were investigated using the small-angle X-ray scattering (SAXS) method. The SAXS results of discharged FeF2 resembled the scattering results of the bicontinuous structures via spinodal decomposition. Thus, the SAXS results showed that the discharged FeF2 electrodes were modulated nanostructures with a spatial periodicity. SAXS measurements also showed that the size of the discharged FeF2 nanostructures was dependent on the cycle number. These SAXS finding on the morphological evolution of the nanoscale structure of conversion electrodes should be useful to reveal the mechanism of conversion reactions.

AB - In a conversion-type electrode material of lithium-ion batteries, a phase separation SAXS instrumentation phenomenon is induced by charge-discharge reaction. In this study, the spatial periodicity of phase-separated nanostructures induced in the discharged ferrous fluoride (FeF2) electrodes were investigated using the small-angle X-ray scattering (SAXS) method. The SAXS results of discharged FeF2 resembled the scattering results of the bicontinuous structures via spinodal decomposition. Thus, the SAXS results showed that the discharged FeF2 electrodes were modulated nanostructures with a spatial periodicity. SAXS measurements also showed that the size of the discharged FeF2 nanostructures was dependent on the cycle number. These SAXS finding on the morphological evolution of the nanoscale structure of conversion electrodes should be useful to reveal the mechanism of conversion reactions.

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JO - Electrochemistry

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ER -

A Bicontinuous Nanostructure Induced in Lithiated Iron Fluoride Electrodes of Lithium-ion Batteries Investigated by Small-Angle X-ray Scattering

Abstract

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