# US 10,483,580 B2 · Solid state fuel cell and method for making the same

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- Number: US 10,483,580 B2
- Document ID: US10483580B2
- Status: Granted
- Kind: B2
- Application number: 15/366,834
- Filed: 2016-12-01
- Published: 2018-05-03
- Granted: 2019-11-19
- Earliest claimed: 2016-11-02
- Assignees: National Taipei University of Technology
- Applicants: National Taipei University of Technology
- Inventors: Sea-Fue Wang; Yi-Xin Liu; Ting-Ting Yang
- Web page: https://patentgrep.com/patent/US10483580B2

## CPC

- H01M 8/1246: the electrolyte consisting of oxides
- C04B 35/16: based on silicates other than clay {(zircon C04B35/48)}
- C04B 35/6262: {of calcined, sintered clinker or ceramics}
- C04B 35/6264: {Mixing media, e.g. organic solvents}
- C04B 35/63416: {Polyvinylalcohols [PVA]; Polyvinylacetates}
- C04B 35/638: Removal thereof
- C04B 2235/3201: Alkali metal oxides or oxide-forming salts thereof
- C04B 2235/3224: Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B 2235/3227: Lanthanum oxide or oxide-forming salts thereof
- C04B 2235/6567: Treatment time
- C04B 2235/72: Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
- C04B 2235/96: Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- H01M 2008/1293: {Fuel cells with solid oxide electrolytes}
- H01M 2300/0074: Ion conductive at high temperature
- Y02E 60/50: Fuel cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- 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

A solid state fuel cell includes an anode, a cathode, and a ceramic electrolyte. The ceramic electrolyte includes a silicate oxyapatite represented by REy−xMxSiO6O27±δ, where RE is a rare earth metal, M is an alkali metal, x is greater than 0 and less than 2, y ranges from 9.3 to 10, and δ ranges from 0 to 2. A method for making the solid state fuel cell is also disclosed.

## Claims

### Claim 1

A solid state fuel cell comprising an anode, a cathode, and a ceramic electrolyte including a silicate oxyapatite represented by
REy−xMxSi6O27±δ
where RE is a rare earth metal, M is an alkali metal, x is greater than 0 and less than 1, y ranges from 9.3 to 10, and δ ranges from 0 to 2.

### Claim 2 (depends on 1)

The solid state fuel cell according to claim 1, wherein M is sodium or potassium and y is 10.

### Claim 3 (depends on 1)

The solid state fuel cell according to claim 1, wherein M is sodium and x is not less than 0.5.

### Claim 4 (depends on 1)

The solid state fuel cell according to claim 1, wherein M is potassium and x is not less than 0.2.

### Claim 5 (depends on 1)

The solid state fuel cell according to claim 1, wherein RE is lanthanum.