# US 2014/0154609 A1 · Electrode catalyst for fuel cell, method of preparing the same, electrode for fuel cell including the electrode catalyst, and fuel cell including the electrode

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0154609 A1
- Document ID: US20140154609A1
- Status: Published application
- Kind: A1
- Application number: 14/034,675
- Filed: 2013-09-24
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Dae-jong YOO; Chan-ho PAK; Seon-ah JIN; Kang-hee LEE
- Web page: https://patentgrep.com/patent/US20140154609A1

## CPC

- H01M 4/921: {Alloys or mixtures with metallic elements}
- H01M 4/926: {on carbon or graphite}
- 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

An electrode catalyst for a fuel cell, wherein the electrode catalyst includes an active particle including: a core including an alloy represented by Formula 1 PdCuaMb Formula 1 wherein M is a transition metal, 0.05≦a≦0.32, and 0<b≦0.2; and a shell including a Pd alloy on the core.

## Claims

### Claim 1

An electrode catalyst for a fuel cell, wherein the electrode catalyst comprises an active particle comprising:
a core comprising an alloy represented by Formula 1
PdCuaMb Formula 1
wherein M is a transition metal, 0.05≦a≦0.32, and 0<b≦0.2; and
a shell comprising a Pd alloy on the core.

### Claim 2 (depends on 1)

The electrode catalyst of claim 1, wherein the Pd alloy of the shell is a palladium-iridium alloy represented by Formula 2:
PdcIrd Formula 2
wherein 0.15≦c≦0.38, and 0.075≦d≦0.22, and wherein c and d are each based on 1 mole of the Pd of the core.

### Claim 3 (depends on 1)

The electrode catalyst of claim 1, wherein in Formula 1 b is 0.03≦b≦0.2.

### Claim 4 (depends on 1)

The electrode catalyst of claim 1, wherein M in Formula 1 M is at least one selected from vanadium, chromium, iron, manganese, cobalt, nickel, copper, and zinc.

### Claim 5 (depends on 1)

The electrode catalyst of claim 1, wherein an average particle diameter of a plurality of the active particles is from about 1 nanometer to about 20 nanometers.

### Claim 6 (depends on 1)

The electrode catalyst of claim 1, wherein a weight ratio of the core to the shell is from about 1:1 to about 1.5:1.

### Claim 7 (depends on 1)

The electrode catalyst of claim 1, wherein the electrode catalyst further comprises a carbonaceous support disposed on the active particle.

### Claim 8 (depends on 7)

The electrode catalyst of claim 7, wherein a content of the active particle is from about 20 parts to about 80 parts by weight, based on 100 parts by weight of the carbonaceous support and the active particle.

### Claim 9 (depends on 1)

The electrode catalyst of claim 1, wherein the alloy represented by Formula 1 is PdNi0.16Cu0.09 or PdNi0.12Cu0.14.

### Claim 10 (depends on 1)

The electrode catalyst of claim 1, wherein the Pd alloy is Pd0.19Ir0.19.

### Claim 11

An electrode for a fuel cell, wherein the electrode comprises an electrode catalyst comprising an active particle comprising:
a core comprising an alloy represented by Formula 1
PdCuaMb Formula 1
wherein M is a transition metal, 0.05≦a≦0.32, and 0<b≦0.2; and
a shell comprising a Pd alloy on the core.

### Claim 12 (depends on 11)

The electrode for a fuel cell catalyst of claim 11, wherein the Pd alloy of the shell is a palladium-iridium alloy represented by Formula 2:
PdcIrd Formula 2
wherein 0.15≦c≦0.38, and 0.075≦d≦0.22, and wherein c and d are each based on 1 mole of the Pd of the core.

### Claim 13 (depends on 11)

The electrode for a fuel cell catalyst of claim 11, wherein M in Formula 1 M is at least one selected from vanadium, chromium, iron, manganese, cobalt, nickel, copper, and zinc.

### Claim 14 (depends on 11)

The electrode for a fuel cell catalyst of claim 11, wherein an average particle diameter of a plurality of the active particles is from about 1 nanometer to about 20 nanometers.

### Claim 15 (depends on 11)

The electrode for a fuel cell catalyst of claim 11, wherein a weight ratio of the core to the shell is from about 1:1 to about 1.5:1.

### Claim 16 (depends on 11)

The electrode for a fuel cell catalyst of claim 11, wherein the electrode catalyst further comprises a carbonaceous support disposed on the active particle.

### Claim 17 (depends on 11)

The electrode for a fuel cell catalyst of claim 11, wherein a content of the active particle is from about 20 parts to about 80 parts by weight, based on a total weight of the electrode catalyst.

### Claim 18 (depends on 11)

The electrode for a fuel cell catalyst of claim 11, wherein the alloy represented by Formula 1 is PdNi0.16Cu0.09 or PdNi0.12Cu0.14.

### Claim 19 (depends on 11)

The electrode of claim 11, wherein the electrode is a cathode.

### Claim 20 (depends on 1)

A fuel cell comprising:
a cathode;
an anode disposed facing the cathode; and
an electrolyte membrane interposed between the cathode and the anode,
wherein at least one of the cathode and the anode comprises the electrode catalyst of claim 1.