Electrocatalyst and fuel cell employing the same

Patent metadata

Field	Value
Publication number	US-2018034065-A1
Application number	US-201615387961-A
Country	US
Kind code	A1
Filing date	Dec 22, 2016
Priority date	Jul 27, 2016
Publication date	Feb 1, 2018
Grant date	—

Abstract

An electrocatalyst is provided. The electrocatalyst includes Pd-containing metal nitride, wherein the metal is Co, Fe, Y, Lu, Sc, Ti, V, Cu, Ni, or a combination thereof. The molar ratio between the metal and Pd is greater than 0 and less than or equal to 0.8. A fuel cell utilizing the above electrocatalyst is further provided.

First claim

What is claimed is:

1 . An electrocatalyst, comprising:
Pd-containing metal nitride, wherein the metal is Co, Fe, Y, Lu, Sc, Ti, V, Cu, Ni, or a combination thereof, and the molar ratio between the metal and the Pd is greater than 0 and less than or equal to 0.8.

2 . The electrocatalyst as claimed in claim 1 , wherein the metal is Co, and the molar ratio between Co and Pd is greater than 0 and less than or equal to 0.115.

3 . The electrocatalyst as claimed in claim 1 , wherein the metal is Fe, and the molar ratio between Fe and Pd is greater than 0 and less than or equal to 0.083.

4 . The electrocatalyst as claimed in claim 1 , wherein the metal is Y, and the molar ratio between Y and Pd is greater than 0 and less than or equal to 0.065.

5 . The electrocatalyst as claimed in claim 1 , wherein the metal is Lu, and the molar ratio between Lu and Pd is greater than 0 and less than or equal to 0.034.

6 . The electrocatalyst as claimed in claim 1 , wherein the metal is Sc, and the molar ratio between Sc and Pd is greater than 0 and less than or equal to 0.079.

7 . The electrocatalyst as claimed in claim 1 , wherein the metal is Ti, and the molar ratio between Ti and Pd is greater than 0 and less than or equal to 0.107.

8 . The electrocatalyst as claimed in claim 1 , wherein the metal is V, and the molar ratio between V and Pd is greater than 0 and less than or equal to 0.290.

9 . The electrocatalyst as claimed in claim 1 , wherein the metal is Cu, and the molar ratio between Cu and Pd is greater than 0 and less than or equal to 0.615.

10 . The electrocatalyst as claimed in claim 1 , wherein the metal is Ni, and the molar ratio between Ni and Pd is greater than 0 and less than or equal to 0.652.

11 . The electrocatalyst as claimed in claim 1 , being supported on a support.

12 . The electrocatalyst as claimed in claim 11 , being a layer or a film supported on the support.

13 . The electrocatalyst as claimed in claim 11 , wherein the support comprises graphite, carbon nanotube, carbon fiber, carbon microsphere, or a combination thereof.

14 . The electrocatalyst as claimed in claim 11 , wherein the support comprises metal, conductive oxide, conductive nitride, or a combination thereof.

15 . A fuel cell, comprising:
an anode; a cathode; an electrolyte disposed between the anode and the cathode; and an electrocatalyst layer disposed between the electrolyte and the cathode, wherein the electrocatalyst layer comprises: Pd-containing metal nitride, wherein the metal is Co, Fe, Y, Lu, Sc, Ti, V, Cu, Ni, or a combination thereof, and the molar ratio between the metal and the Pd is greater than 0 and less than or equal to 0.8.

16 . The fuel cell as claimed in claim 15 , wherein:
the metal is Co, and the molar ratio between Co and Pd is greater than 0 and less than or equal to 0.115; the metal is Fe, and the molar ratio between Fe and Pd is greater than 0 and less than or equal to 0.083; the metal is Y, and the molar ratio between Y and Pd is greater than 0 and less than or equal to 0.065; the metal is Lu, and the molar ratio between Lu and Pd is greater than 0 and less than or equal to 0.034; the metal is Sc, and the molar ratio between Sc and Pd is greater than 0 and less than or equal to 0.079; the metal is Ti, and the molar ratio between Ti and Pd is greater than 0 and less than or equal to 0.107; the metal is V, and the molar ratio between V and Pd is greater than 0 and less than or equal to 0.290; the metal is Cu, and the molar ratio between Cu and Pd is greater than 0 and less than or equal to 0.615; or the metal is Ni, and the molar ratio between Ni and Pd is greater than 0 and less than or equal to 0.652.

17 . The fuel cell as claimed in claim 15 , wherein the electrocatalyst layer is formed on the cathode.

Assignees

• Ind Tech Res Inst

Inventors

• Chao Wen-Hsuan
• Huang Chiung-Hui
• Yang Ping-Hsing
• Chiou Shan-Haw
• Chen Keng-Yang
• Lai Chien-Ming
• Tsai Li-Duan

Classifications

• H01M4/923 Primary

  Compounds thereof with non-metallic elements · CPC title

• H01M8/083

  Alkaline fuel cells · CPC title

• H01M8/08

  Fuel cells with aqueous electrolytes · CPC title

• H01M4/925

  supported on carriers, e.g. powder carriers · CPC title

• H01M4/8652

  as mixture · CPC title