Nonaqueous Electrolyte Battery Inorganic Particles, and Nonaqueous Electrolyte Battery Using These

Patent metadata

Field	Value
Publication number	US-2019296305-A1
Application number	US-201716465777-A
Country	US
Kind code	A1
Filing date	Aug 30, 2017
Priority date	Dec 2, 2016
Publication date	Sep 26, 2019
Grant date	—

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

1 . Inorganic particles for a nonaqueous electrolyte battery, comprising a cation exchanger having a highly crystallized one-dimensional tunnel-like crystal structure.

2 . The inorganic particles for a nonaqueous electrolyte battery according to claim 1 , wherein the cation exchanger having a 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 a highly crystallized one-dimensional tunnel-like crystal structure is hydroxyapatite, and the hydroxyapatite has a diffraction peak of the (002) plane within the diffraction angle (2θ) of from 25.5 to 26.5° and a diffraction peak of the (300) plane within the 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 , further containing inorganic particles for mixing.

8 . The inorganic particles for a nonaqueous electrolyte battery according to claim 7 , wherein an average thickness of the inorganic particles for mixing is thicker than that of the cation exchanger.

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

10 . The inorganic particles for a nonaqueous electrolyte battery according to claim 7 , 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.

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

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

13 . 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 .

14 . The nonaqueous electrolyte battery comprising the positive electrode, the negative electrode, and the separator according to claim 12 , wherein the inorganic particle-containing layer is formed partially or entirely 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.

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

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

17 . A separator for a nonaqueous electrolyte battery, comprising the inorganic particle-containing layer according to claim 12 on at least one surface of the separator.

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

19 . 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.

20 . A lithium ion secondary battery comprising a laminated body or a roll of the laminated body, and a nonaqueous electrolyte, wherein a positive electrode, the 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.

21 . An inspection method for a metal adsorption capacity of inorganic particles for a nonaqueous electrolyte battery, wherein the method comprises:
preparing a nonaqueous electrolyte solution having a metal concentration of 0.1 to 10,000 ppm by adding a metal compound to a cyclic and/or a linear carbonate solution containing 0.1 to 6.0 mol/L of LiPF 6 at a dew point of −40° C. or lower; preparing a nonaqueous electrolyte mixture solution by adding 0.001 to 100 parts by weight of the inorganic particles for a nonaqueous electrolyte battery to 100 parts of the nonaqueous electrolyte solution; stirring the nonaqueous electrolyte mixture solution at 0 to 45° C. for 1 second to 1000 hours; and carrying out quantitative analysis of the metal ion concentration in the nonaqueous electrolyte mixture solution after stirring using an inductively coupled plasma-atomic emission spectroscopy (ICP-AES) or an inductively coupled plasma-mass spectrometry (ICP-MS).

Assignees

• Asahi Chemical Ind

Inventors

• Ito Nobuhiro
• Saeki Hiroyuki

Classifications

• H01M2/1686

  Electricity · mapped topic

• H01M2/1646 Primary

  Electricity · mapped topic

• H01M10/0525 Primary

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

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M2300/0017

  Non-aqueous electrolytes · CPC title