JP2020013796A5

JP2020013796A5 -

Info

Publication number: JP2020013796A5
Application number: JP2019163604A
Authority: JP
Filing date: 2019-09-09
Publication date: 2021-12-02
Anticipated expiration: 2038-12-06

Claims

It is composed of a laminate having at least a base material layer located on the outermost surface, a barrier layer, and a heat-sealing resin layer in this order.
The arithmetic average roughness of the outermost surface of the polyester film layer is 1000 nm or less.
Two or more kinds of lubricants are present on at least one of the surface and the inside of the base material layer.
The outermost surface of the base material layer is composed of a polyester film layer.
When the infrared absorption spectrum in 18 directions is obtained from 0 ° to 170 ° in 10 ° increments on the surface of the polyester film layer using the total reflection method of Fourier transform infrared spectroscopy, the following equation is satisfied. , Packaging material for batteries.
Y _max / Y _min <1.4
Y _max is the maximum value among the values obtained by dividing the absorption peak intensity Y ₁₃₄₀ at the wave number ^{1340 cm -1} of the infrared absorption spectrum by the absorption peak intensity Y ₁₄₁₀ ^{at the wave number 1410 cm -1 in each of the 18 directions.} Is.
Y _min is the minimum value among the values obtained by dividing the absorption peak intensity Y ₁₃₄₀ at the wave number ^{1340 cm -1} of the infrared absorption spectrum by the absorption peak intensity Y ₁₄₁₀ ^{at the wave number 1410 cm -1 in each of the 18 directions.} Is.

It is composed of a laminate having at least a base material layer located on the outermost surface, a barrier layer, and a heat-sealing resin layer in this order.
The arithmetic average roughness of the outermost surface of the polyester film layer is 1000 nm or less.
Two or more kinds of lubricants are present on at least one of the surface and the inside of the heat-sealing resin layer.
The outermost surface of the base material layer is composed of a polyester film layer.
When the infrared absorption spectrum in 18 directions is obtained from 0 ° to 170 ° in 10 ° increments on the surface of the polyester film layer using the total reflection method of Fourier transform infrared spectroscopy, the following equation is satisfied. , Packaging material for batteries.
Y _max / Y _min <1.4
Y _max is the maximum value among the values obtained by dividing the absorption peak intensity Y ₁₃₄₀ at the wave number ^{1340 cm -1} of the infrared absorption spectrum by the absorption peak intensity Y ₁₄₁₀ ^{at the wave number 1410 cm -1 in each of the 18 directions.} Is.
Y _min is the minimum value among the values obtained by dividing the absorption peak intensity Y ₁₃₄₀ at the wave number ^{1340 cm -1} of the infrared absorption spectrum by the absorption peak intensity Y ₁₄₁₀ ^{at the wave number 1410 cm -1 in each of the 18 directions.} Is.

It is composed of a laminate having at least a base material layer located on the outermost surface, a barrier layer, and a heat-sealing resin layer in this order.
The arithmetic average roughness of the outermost surface of the polyester film layer is 1000 nm or less.
The thickness of the laminate is 180 μm or less, and the thickness is 180 μm or less.
The outermost surface of the base material layer is composed of a polyester film layer.
When the infrared absorption spectrum in 18 directions is obtained from 0 ° to 170 ° in 10 ° increments on the surface of the polyester film layer using the total reflection method of Fourier transform infrared spectroscopy, the following equation is satisfied. , Packaging material for batteries.
Y _maxmax / Y _minmin <1.4
Y _maxmax Is a wave number of 1340 cm in the infrared absorption spectrum in each of the 18 directions. ^-1-1 Absorption peak intensity Y in _13401340 , Wave number 1410 cm ^-1-1 Absorption peak intensity Y in _14101410 It is the maximum value among the values divided by.
Y _minmin Is a wave number of 1340 cm in the infrared absorption spectrum in each of the 18 directions. ^-1-1 Absorption peak intensity Y in _13401340 , Wave number 1410 cm ^-1-1 Absorption peak intensity Y in _14101410 It is the minimum value among the values divided by.

It is composed of a laminate having at least a base material layer located on the outermost surface, a barrier layer, and a heat-sealing resin layer in this order.
The arithmetic average roughness of the outermost surface of the polyester film layer is 1000 nm or less.
The heat-sealing resin layer is formed of two or more layers with the same or different resin components.
The outermost surface of the base material layer is composed of a polyester film layer.
When the infrared absorption spectrum in 18 directions is obtained from 0 ° to 170 ° in 10 ° increments on the surface of the polyester film layer using the total reflection method of Fourier transform infrared spectroscopy, the following equation is satisfied. , Packaging material for batteries.
Y _maxmax / Y _minmin <1.4
Y _maxmax Is a wave number of 1340 cm in the infrared absorption spectrum in each of the 18 directions. ^-1-1 Absorption peak intensity Y in _13401340 , Wave number 1410 cm ^-1-1 Absorption peak intensity Y in _14101410 It is the maximum value among the values divided by.
Y _minmin Is a wave number of 1340 cm in the infrared absorption spectrum in each of the 18 directions. ^-1-1 Absorption peak intensity Y in _13401340 , Wave number 1410 cm ^-1-1 Absorption peak intensity Y in _14101410 It is the minimum value among the values divided by.

The packaging material for a battery according to any one of claims 1 to 4, which is used for printing on the surface of the polyester film layer.

The battery according to any one of claims 1 to 5, wherein the arithmetic average roughness Ra measured for the surface of the polyester film layer is 10 nm or more according to the method specified in JIS B 0601-2001. Packaging material.

An adhesive layer is provided between the barrier layer and the heat-sealing resin layer.
The battery packaging material according to any one of claims 1 to 6 , wherein the adhesive layer contains an acid-modified polyolefin.

The acid-modified polyolefin of the adhesive layer is maleic anhydride-modified polypropylene.
The packaging material for a battery according to claim 7 , wherein the heat-sealing resin layer contains polypropylene.

The packaging material for a battery according to claim 7 or 8 , wherein the thickness of the adhesive layer is 50 μm or less.

The packaging material for a battery according to claim 7 or 8 , wherein the thickness of the adhesive layer is 10 μm or more and 50 μm or less.

The packaging material for a battery according to any one of claims 7 to 10 , which is a coextruded laminate of the adhesive layer and the heat-sealing resin layer.

The packaging material for a battery according to any one of claims 1 to 11 , wherein the thickness of the polyester film layer is 10 μm or more and 50 μm or less.

An acid-resistant film is provided on at least one surface of the barrier layer.
When the acid-resistant film is analyzed using time-of-flight secondary ion mass spectrometry, at least one selected from the group consisting of _{Ce 2} PO ⁴⁺ , CePO ^4- , CrPO ²⁺ , and CrPO ^4- The packaging material for a battery according to any one of claims 1 to 12 , wherein a peak derived from a species is detected.

13 . The packaging material for batteries described in Crab.

The packaging material for a battery according to any one of claims 1 to 14 , wherein an acid-resistant film containing a cerium compound is provided on at least one surface of the barrier layer.

At least, it includes a step of laminating the base material layer, the barrier layer, and the heat-sealing resin layer located on the outermost surface in this order to obtain a laminated body.
The arithmetic average roughness of the outermost surface of the polyester film layer is 1000 nm or less.
Two or more kinds of lubricants are present on at least one of the surface and the inside of the base material layer.
The outermost surface of the base material layer is composed of a polyester film layer.
When the infrared absorption spectrum in 18 directions is obtained from 0 ° to 170 ° in 10 ° increments on the surface of the polyester film layer using the total reflection method of Fourier transform infrared spectroscopy, the following equation is satisfied. , Manufacturing method of packaging material for batteries.
Y _max / Y _min <1.4
Y _max is the maximum value among the values obtained by dividing the absorption peak intensity Y ₁₃₄₀ at the wave number ^{1340 cm -1} of the infrared absorption spectrum by the absorption peak intensity Y ₁₄₁₀ ^{at the wave number 1410 cm -1 in each of the 18 directions.} Is.
Y _min is the minimum value among the values obtained by dividing the absorption peak intensity Y ₁₃₄₀ at the wave number ^{1340 cm -1} of the infrared absorption spectrum by the absorption peak intensity Y ₁₄₁₀ ^{at the wave number 1410 cm -1 in each of the 18 directions.} Is.

A battery in which a battery element including at least a positive electrode, a negative electrode, and an electrolyte is housed in a package formed of the battery packaging material according to any one of claims 1 to 15.

The battery according to claim 17 , which has a printed portion on the surface of the polyester film layer.

A storage step of accommodating a battery element having at least a positive electrode, a negative electrode, and an electrolyte in a package made of the battery packaging material according to any one of claims 1 to 15.
A step of printing on the surface of the polyester film layer at least one before and after the accommodating step.
A method of manufacturing a battery.

A polyester film for use in the polyester film layer located on the outermost surface of battery packaging materials.
The battery packaging material is composed of a laminate having at least a base material layer located on the outermost surface, a barrier layer, and a heat-sealing resin layer in this order.
The arithmetic average roughness of the outermost surface of the polyester film layer is 1000 nm or less.
Two or more kinds of lubricants are present on at least one of the surface and the inside of the base material layer.
When the infrared absorption spectrum in 18 directions is obtained from 0 ° to 170 ° in 10 ° increments on the surface of the polyester film by using the total reflection method of Fourier transform infrared spectroscopy, the following equation is satisfied. Polyester film.
Y _max / Y _min <1.4
Y _max is the maximum value among the values obtained by dividing the absorption peak intensity Y ₁₃₄₀ at the wave number ^{1340 cm -1} of the infrared absorption spectrum by the absorption peak intensity Y ₁₄₁₀ ^{at the wave number 1410 cm -1 in each of the 18 directions.} Is.
Y _min is the minimum value among the values obtained by dividing the absorption peak intensity Y ₁₃₄₀ at the wave number ^{1340 cm -1} of the infrared absorption spectrum by the absorption peak intensity Y ₁₄₁₀ ^{at the wave number 1410 cm -1 in each of the 18 directions.} Is.