Solid electrolyte, ion conductor, sheet and power storage device

JP2025132328APending Publication Date: 2025-09-10NITERRA CO LTD
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Patent Information

Application Number
JP2024029801
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-02-29
Publication Date
2025-09-10

AI Technical Summary

Benefits of technology

【0016】 本発明の固体電解質によれば、飛行時間型二次イオン質量分析法により検出される二次イオンの強度は、Li+の強度に対するLi2F+の強度が0.1%以上であるため、表面にLiFが存在する。LiFはリチウムイオン伝導性を有するため、固体電解質の界面抵抗を低減できる。

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Abstract

To provide a solid electrolyte, an ion conductor, a sheet and a power storage device capable of reducing interfacial resistance.SOLUTION: There is provided a solid electrolyte which has a garnet-type crystal structure containing Li, La, Zr and O, wherein in the intensity of secondary ions detected by time-of-flight secondary ion mass spectrometry, the intensity of Li2F+ relative to the intensity of Li+ is 0.1% or more. There is provided an ion conductor which comprises a solid electrolyte and an electrolyte solution in which a lithium salt is dissolved in a non-aqueous solvent. There is provided a sheet which comprises an ion conductor and a binder for bonding the solid electrolyte. There is provided a power storage device which comprises the solid electrolyte.SELECTED DRAWING: Figure 1
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Claims

1. A solid electrolyte having a garnet-type crystal structure containing Li, La, Zr, and O, The intensity of the secondary ions detected by time-of-flight secondary ion mass spectrometry is ＋ Li relative to the intensity of ２ F ＋ A solid electrolyte having a strength of 0.1% or more.

2. O ２－ The intensity of secondary ions detected when performing depth direction analysis by sputtering using an ion source of Li ＋ Li relative to the intensity of ２ F ＋ 2. The solid electrolyte according to claim 1, wherein the strength of

3. 3. The solid electrolyte according to claim 1, further comprising Mg and Sr.

4. The solid electrolyte according to claim 1 or 2; an electrolyte solution in which a lithium salt is dissolved in a non-aqueous solvent; and

5. A sheet comprising the solid electrolyte according to claim 1 or 2.

6. An electrode comprising the solid electrolyte according to claim 1 or 2.

7. An electrode in contact with a protective layer comprising the solid electrolyte according to claim 1 or 2.

8. An electricity storage device comprising the electrode according to claim 6.

9. An electricity storage device comprising the electrode according to claim 7.

10. A separator comprising the solid electrolyte according to claim 1 or 2.

11. A separator in contact with a protective layer comprising the solid electrolyte according to claim 1 or 2.

12. An electricity storage device comprising the separator according to claim 10.

13. An electricity storage device comprising the separator according to claim 11.

Citation Information

Patent Citations

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