# US 2013/0157172 A1 · Ionically conductive material and process for producing same

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- Number: US 2013/0157172 A1
- Document ID: US20130157172A1
- Status: Published application
- Kind: A1
- Application number: 13/820,579
- Filed: 2011-09-05
- Published: 2013-06-20
- Earliest claimed: 2010-09-06
- Inventors: Tetsuo Yazawa; Yusuke Daiko; Takeshi Yamada; Hironori Takase; Hiroki Yamazaki
- Web page: https://patentgrep.com/patent/US20130157172A1

## CPC

- C03C 4/18: for ion-sensitive glass
- C03C 3/062: with less than 40% silica by weight
- C03C 3/097: containing phosphorus, niobium or tantalum
- C03C 3/16: containing phosphorus
- H01M 8/12: operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M 8/1246: the electrolyte consisting of oxides
- H01M 2008/1293: {Fuel cells with solid oxide electrolytes}
- H01M 2300/0071: Oxides
- Y02E 60/50: Fuel cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

Provided is an ion-conducting material, comprising, as a composition in terms of mol o, 15 to 80% of P2O5, 0 to 70% of SiO2, and 5 to 35% of R2O, which represents the total content of Li2O, Na2O, K2O, Rb2O, Cs2O, and Ag2O.

## Claims

### Claim 1

An ion-conducting material, comprising, as a composition in terms of mol %, 15 to 80% of P2O5, 0 to 70% of SiO2, and 5 to 35% of R2O, which represents a total content of Li2O, Na2O, K2O, Rb2O, Cs2O, and Ag2O.

### Claim 2 (depends on 1)

The ion-conducting material according to claim 1, wherein R2O comprises at least two or more kinds of components among Li2O, Na2O, K2O, Rb2O, Cs2O, and Ag2O.

### Claim 3 (depends on 1)

The ion-conducting material according to claim 1, wherein a content of P2O5 is 15 to 60% and a content of SiO2 is 10 to 60%.

### Claim 4 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material has a molar ratio of (Na2O+K2O)/R2O of 0.2 to 1.0.

### Claim 5 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material has a molar ratio of Na2O/R2O of 0.2 to 0.8.

### Claim 6 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material has a molar ratio of K2O/R2O of 0.2 to 0.8.

### Claim 7 (depends on 1)

The ion-conducting material according to claim 1, further comprising 0.1 mol % or more of Al2O3 in the composition.

### Claim 8 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material has an ionic conductivity log10σ (S/cm) at 500° C. of −5.5 or more and has a transport number of a proton at 500° C. of 0.7 or more.

### Claim 9 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material has an areal resistance value (Ω.cm2) at 500° C. of 30 or less.

### Claim 10 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material is an amorphous material with a crystallinity of 50% or less.

### Claim 11 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material has a thin-sheet shape and has a thickness of 1 to 500 μm.

### Claim 12 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material is used for an electrochemical device.

### Claim 13 (depends on 1)

The ion-conducting material according to claim 1, wherein the ion-conducting material is used for a fuel cell.

### Claim 14 (depends on 1)

An electrochemical device, comprising the ion-conducting material as claimed in claim 1.

### Claim 15 (depends on 1)

A method of producing the ion-conducting material as claimed in claim 1, the method comprising the steps of:
melting a raw material; and
forming the resultant molten glass into a predetermined shape.

### Claim 16 (depends on 15)

The method of producing the ion-conducting material according to claim 15, wherein a method for the forming is any one of an overflow down-draw method, a slot down-draw method, and a redraw method.