Nonaqueous electrolyte battery inorganic particles, and nonaqueous electrolyte battery using these

Patent metadata

Field	Value
Publication number	US-11489233-B2
Application number	US-201716465777-A
Country	US
Kind code	B2
Filing date	Aug 30, 2017
Priority date	Dec 2, 2016
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A purpose of the present disclosure is to provide nonaqueous electrolyte battery inorganic particles that enable provision of a nonaqueous electrolyte battery having excellent properties of safety and service life. Another purpose of the present disclosure is to provide an efficient and effective method for inspecting the metal absorption ability of nonaqueous electrolyte battery inorganic particles.

First claim

The invention claimed is:

1. Inorganic particles for a nonaqueous electrolyte battery, comprising a cation exchanger having a highly crystallized one-dimensional tunnel-like crystal structure, wherein:
the inorganic particles show a peak derived from the one-dimensional tunnel-like crystal structure in X-ray diffraction measurement using Cu—Kα ray as a light source, and a half width of the peak is 0.3° or less; and
the inorganic particles further contain inorganic particles for mixing, and an average thickness of the inorganic particles for mixing is thicker than that of the cation exchanger.

2. The inorganic particles for a nonaqueous electrolyte battery according to claim 1 , wherein the cation exchanger having the highly crystallized one-dimensional tunnel-like crystal structure is one or more selected from the group consisting of hydroxyapatite, fluoroapatite, chlorapatite, protonated albite, manganese oxide, β-alumina, potassium hexatitanate, potassium tungstate, potassium molybdate, octotitanate, and gallotitanogallate.

3. The inorganic particles for a nonaqueous electrolyte battery according to claim 1 , wherein the cation exchanger having the highly crystallized one-dimensional tunnel-like crystal structure is hydroxyapatite, and the hydroxyapatite has a diffraction peak of the (002) plane within a diffraction angle (2θ) of from 25.5 to 26.5° and a diffraction peak of the (300) plane within a diffraction angle (2θ) of from 32.5 to 33.5°, and a half width of the diffraction peak of the (002) plane is 0.3° or less, in an X-ray diffraction pattern by X-ray diffraction measurement using Cu—Kα ray as a light source.

4. The inorganic particles for a nonaqueous electrolyte battery according to claim 3 , wherein the half width of the diffraction peak of the (002) plane is 0.15° or less.

5. The inorganic particles for a nonaqueous electrolyte battery according to claim 1 , wherein a BET specific surface area is 3 m 2 /g or more.

6. The inorganic particles for a nonaqueous electrolyte battery according to claim 1 , wherein an adsorption rate of Mn 2+ ions to the inorganic particles for a nonaqueous electrolyte battery is 10% or more, when 0.035 parts by weight of the inorganic particles for a nonaqueous electrolyte battery is immersed in 100 parts by weight of a mixed solution of 5 ppm of Mn 2+ ions, 1 mol/L of LiPF 6 , and a cyclic and/or a linear carbonate at 23° C. for 6 hours.

7. The inorganic particles for a nonaqueous electrolyte battery according to claim 1 , wherein the inorganic particles for mixing are an anion exchanger.

8. The inorganic particles for a nonaqueous electrolyte battery according to claim 1 , wherein an amount of the inorganic particles for mixing is less than 50% by weight based on 100% by weight of the total weight of the cation exchanger and the inorganic particles for mixing.

9. A battery constituent material comprising the inorganic particles for a nonaqueous electrolyte battery according to claim 1 .

10. A nonaqueous electrolyte battery comprising an inorganic particle-containing layer containing the inorganic particles for a nonaqueous electrolyte battery according to claim 1 .

11. A separator for a nonaqueous electrolyte battery, comprising the inorganic particle-containing layer according to claim 10 on at least one surface of the separator.

12. A nonaqueous electrolyte battery comprising a positive electrode, a negative electrode, a separator, a nonaqueous electrolyte, and an outer package, wherein at least one of the positive electrode, the negative electrode, the separator, the nonaqueous electrolyte, and the outer package contains the inorganic particles for a nonaqueous electrolyte battery according to claim 1 .

13. The nonaqueous electrolyte battery comprising the positive electrode, the negative electrode, and the separator according to claim 12 , wherein an inorganic particle-containing layer is formed partially or entirely from at least one selected from: inside of the separator, between the positive electrode and the negative electrode, or between the negative electrode and the separator.

14. The nonaqueous electrolyte battery according to claim 13 , wherein the inorganic particle-containing layer is formed partially or entirely between the positive electrode and the separator.

15. A separator for a nonaqueous electrolyte battery, comprising the inorganic particles for a nonaqueous electrolyte battery according to claim 1 .

16. A paint for a nonaqueous electrolyte battery, comprising the inorganic particles for a nonaqueous electrolyte battery according to claim 1 .

17. A resin solid material for a nonaqueous electrolyte battery, comprising the inorganic particles for a nonaqueous electrolyte battery according to claim 1 , and a resin.

18. A lithium ion secondary battery comprising a laminated body or a roll of the laminated body, and a nonaqueous electrolyte, wherein a positive electrode, an inorganic particle-containing layer comprising the inorganic particles for a nonaqueous electrolyte battery according to claim 1 , a separator, and a negative electrode are laminated in this order.

Assignees

• Asahi Chemical Ind

Inventors

• Ito Nobuhiro
• Saeki Hiroyuki

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M50/451 Primary

  comprising layers of only organic material and layers containing inorganic material · CPC title

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title