JP2012525452A5

JP2012525452A5 -

Info

Publication number: JP2012525452A5
Application number: JP2012507651A
Authority: JP
Filing date: 2010-03-01
Publication date: 2013-02-21
Anticipated expiration: 2030-03-01

Claims

Carrier base plane (2), and the carrier substrate in the ceramic composite material comprising a porous coating (4) with (2) the applied ceramic particles (3) (1), the carrier substrate (2) is a polymer film (2), the carrier substrate (2) is provided with perforations consisting of a number of regularly arranged holes (6), and the perforations are formed on the carrier substrate. A ceramic composite material (1), characterized in that it is covered with a porous coating (4) on at least one side of the material (2).

Wherein a hole (6) is essentially circular, and the center spacing of the holes (6) to the two adjacent (D) is characterized in that one constant in the range of perforations, according to claim 1, wherein Ceramic composite material.

3. The coating according to claim 1 or 2, characterized in that the coating (4) is applied to both sides of the carrier substrate (2) and the coating (4) penetrates into the holes (6). Ceramic composite material.

The ceramic particles (3) of the coating (4) are bound to one another by a binder (5), wherein the binder (5) is an inorganic compound. The ceramic composite material according to any one of claims.

A ceramic composite material according to claim 4, characterized in that the binder (5) contains silane.

The ceramic particles (3) of the coating (4) are bound to each other by means of a binder (5), wherein the binder (5) is an organic compound. The ceramic composite material according to any one of claims.

The ceramic composite material according to claim 6, characterized in that at least a part of the ceramic particles (3) of the coating (4) are bonded to the polymer film by the organic binder (5).

The ceramic composite material according to claim 6 or 7, characterized in that the binder (5) contains a fluorine-containing polymer.

The ceramic composite material according to claim 8, wherein the fluorine-containing polymer is polyvinylidene fluoride.

The ceramic composite material according to claim 6 or 7, characterized in that the binder (5) contains a fluorine-containing copolymer.

11. A ceramic composite material according to claim 10, characterized in that the fluorine-containing copolymer is polyvinylidene fluoride-hexafluoropropylene.

The polymer film (2) is, following plastic:
a) polyethylene terephthalate,
b) polyacrylonitrile,
c) polyester,
d) polyamide,
e) aromatic polyamide (aramid),
f) polyolefins,
g) polytetrafluoroethylene,
h) polystyrene,
i) polycarbonate,
k) acrylonitrile-butadiene-styrene,
1) The ceramic composite material according to any one of claims 1 to 11, characterized in that it contains at least one cellulose hydrate.

The ceramic composite material according to claim 1, wherein the polymer film has a thickness of less than 25 μm.

14. Ceramic composite material according to any one of claims 2 to 13, characterized in that the diameter (d) of each hole (6) of the perforations is smaller than 500 [mu] m.

The ceramic composite material according to any one of claims 1 to 14, wherein a ratio of the holes in a total area of the polymer film is 10 to 90%.

The ceramic particle element (3), characterized in that it has an average particle size d50 of 0.01 to 10 [mu] m, the ceramic composite material according to any one of claims 1 to 15.

The ceramic particle element (3), characterized in that it has a maximum particle size of 10 [mu] m, the ceramic composite material of claim 16, wherein.

The coating includes ceramic particles that are at least one oxide or mixed oxide of the following elements: lithium, boron, magnesium, aluminum, silicon, titanium, zinc, zirconium, niobium, barium, hafnium. The ceramic composite material according to any one of claims 1 to 17.

The following steps:
a) preparing a closed polymer film;
b) perforating the polymer film such that the polymer film obtains perforations consisting of a number of regularly arranged holes;
c) applying a porous coating having ceramic particles to at least one side of the perforated polymer film;
A process for producing a ceramic composite material, in particular a ceramic composite material according to any one of claims 1 to 18, characterized in that

The application of the coating to the polymer fill beam, the dispersion was applied to perforated polymeric film, and performed by curing, in which the dispersion is to disperse the ceramic particles in a solution 20. A process according to claim 19 for producing a ceramic composite material according to any one of claims 6 to 18, wherein the solution contains an organic binder dissolved in an organic solvent. .

21. A process according to claim 20, characterized in that a dispersion having a proportion of ceramic particles in the total dispersion of 10 to 60% by weight is used.

The process according to claim 20 or 21, characterized in that a dispersion having an organic binder proportion of 0.5 to 20% by weight is used.

As a solvent, 1-methyl-2-pyrrolidone (NMP), acetone, ethanol, n-propanol, 2-propanol, n-butanol, cyclohexanol, diacetone alcohol, n-hexane, petroleum ether, cyclohexane, diethyl ether, dimethyl Use of an organic compound selected from formamide, dimethylacetamide, tetrahydrofuran, dioxane, dimethyl sulfoxide, benzene, toluene, xylene, dimethyl carbonate, ethyl acetate, chloroform or dichloromethane , or a mixture of these compounds, Item 23. The method according to any one of Items 20 to 22.

24. A method according to any one of claims 20 to 23, characterized in that the dispersion is cured by removing the solvent.

25. A method according to any one of claims 20 to 24, characterized in that the dispersion is applied to both sides of the polymer film and introduced into the holes of the polymer film and cured.

The dispersion is first applied to one side of the polymer film and introduced into the holes of the polymer film and cured, and subsequently applied to the other side of the film and cured. 26. The method of claim 25.

A ceramic composite material (1) produced according to the method of any one of claims 19 to 26.

For insulating the cathode and A node in an electrochemical cell, use of any one of or claim 27, wherein the ceramic composite material of claims 1 to 18 (1).

19. An electrochemical cell comprising a cathode, an anode, an electrolyte, and a ceramic composite disposed between the anode and the cathode, wherein the ceramic composite is any one of claims 1-18. Electrochemical cell, characterized in that it is a ceramic composite material according to claim 1 or claim 27.

30. The electrochemical cell according to claim 29, wherein the electrochemical cell is a lithium secondary battery.