# US 2006/0222925 A1 · Fuel cell having gas/liquid isolated structure

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- Number: US 2006/0222925 A1
- Document ID: US20060222925A1
- Status: Published application
- Kind: A1
- Application number: 11/094,728
- Filed: 2005-03-31
- Published: 2006-10-05
- Earliest claimed: 2005-03-31
- Inventors: Hsi-Ming Shu; Feng-Yi Deng; Tsang-Ming Chang; Chen Lin; Jing-Tang Jan; Yean-Der Kuan
- Web page: https://patentgrep.com/patent/US20060222925A1

## CPC

- H01M 8/0271: Sealing or supporting means around electrodes, matrices or membranes
- H01M 8/0284: Organic resins; Organic polymers
- H01M 8/1011: Direct alcohol fuel cells [DAFC], e.g. direct methanol fuel cells [DMFC]
- H01M 8/028: Sealing means characterised by their material
- Y02E 60/50: Fuel cells
- 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

## Abstract

The present invention is related to a fuel cell having gas/liquid isolated structure, comprising a fuel cell core component and an isolating layer component. The fuel cell core component is used to produce electricity by electro-chemical reaction. The isolating layer is a porous film layer with gas ventilation but with liquid isolation placed inside the fuel cell and is used to isolate the liquid of fuel cell core component in an electro-chemical reaction and the liquid produced after the electrochemical reaction by the isolating layer, and is also used to ventilate the gas of fuel cell core component in electro-chemical reaction and the gas produced after electro-chemical reaction through the isolating layer so as to achieve the functions of water-proof, anti-leakage and liquid-leak prevention.

## Claims

### Claim 1

A fuel cell having gas/liquid isolated structure, comprising:
a fuel cell core component, used to produce electricity by electrochemical reaction;
an isolating layer, being a porous film layer with gas ventilation but liquid isolation placed inside the fuel cell and used to isolate the liquid of fuel cell core component in electrochemical reaction and the liquid produced after electrochemical reaction by the isolating layer, and also used to ventilate the gas of fuel cell core component in electro-chemical reaction and the gas produced after electrochemical reaction through the isolating layer so as to achieve the functions of water-proof, anti-leakage and liquid-leak prevention.

### Claim 2 (depends on 1)

The fuel cell of claim 1, wherein the fuel cell core component comprises an anode current collection layer, a membrane electrode assembly layer and a cathode current collection layer.

### Claim 3 (depends on 2)

The fuel cell of claim 2, wherein the isolating layer is placed on the top surface of the anode current collection layer.

### Claim 4 (depends on 2)

The fuel cell of claim 2, wherein the isolating layer is placed on the bottom surface of the anode current collection layer.

### Claim 5 (depends on 2)

The fuel cell of claim 2, wherein the isolating layer is placed on the top surface of the cathode current collection layer.

### Claim 6 (depends on 2)

The fuel cell of claim 2, wherein the isolating layer is placed on the bottom surface of the cathode current collection layer.

### Claim 7 (depends on 1)

The fuel cell of claim 1, further comprising:
an anode fuel supply unit connecting to the fuel cell core component, used to provide and guide the anode fuel to the anodes of the fuel cell core component;
a cathode fuel supply unit connecting to the fuel cell core component, used to provide and guide the cathode fuel to the cathodes of the fuel cell core component

### Claim 8 (depends on 7)

The fuel cell of claim 7, wherein the isolating layer is placed on the top surface of the anode fuel supply unit.

### Claim 9 (depends on 7)

The fuel cell of claim 7, wherein the isolating layer is placed on the bottom surface of the anode fuel supply unit.

### Claim 10 (depends on 7)

The fuel cell of claim 7, wherein the isolating layer is placed on the peripheral sides of the anode fuel supply unit.

### Claim 11 (depends on 7)

The fuel cell of claim 7, wherein the isolating layer is placed on the top surface of the cathode fuel supply unit.

### Claim 12 (depends on 7)

The fuel cell of claim 7, wherein the isolating layer is placed on the bottom surface of the cathode fuel supply unit.

### Claim 13 (depends on 7)

The fuel cell of claim 7, wherein the isolating layer is placed on the peripheral sides of the cathode fuel supply unit.

### Claim 14 (depends on 1)

The fuel cell of claim 1, wherein the fuel cell is a direct methanol fuel cell.

### Claim 15 (depends on 14)

The fuel cell of claim 14, wherein the isolating layer is used to pass the external air through the isolating layer and prevent the water produced by the reaction in the direct methanol fuel cell from leaking outward the outside of the fuel cell.

### Claim 16 (depends on 14)

The fuel cell of claim 14, wherein the isolating layer is used to pass the gas of carbon dioxide produced by the reaction and prevent the methanol solution from leaking outward the outside of the fuel cell by the isolating layer.

### Claim 17 (depends on 1)

The fuel cell of claim 1, wherein the isolating layer is Poly tetrofluoro ethylene (PTFE)