Fuel cell with polymer electrolyte membrane

Patent metadata

Field	Value
Publication number	US-12412916-B2
Application number	US-202217979270-A
Country	US
Kind code	B2
Filing date	Nov 2, 2022
Priority date	Apr 4, 2022
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A compound is represented by Formula 1 below:

wherein R 1 to R 4 are each independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a fluoro-substituted alkyl group having 1 to 6 carbon atoms, or a fluorine atom, wherein at least one among R 1 to R 4 is a fluorine atom, A is a divalent linking group, M 1 and M 2 are each independently potassium or sodium, and n and m are each independently an integer of 1 to 10.

First claim

What is claimed is:

1. A compound represented by Formula 1 below:

wherein R 1 to R 4 are each independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a fluoro-substituted alkyl group having 1 to 6 carbon atoms, or a fluorine atom, wherein at least one among R 1 to R 4 is a fluorine atom,
A is a divalent linking group,
M 1 and M 2 are each independently potassium or sodium, and
n and m are each independently an integer of 1 to 10.

2. The compound of claim 1 , wherein R 1 to R 4 are each independently the hydrogen atom, where at least one among R 1 to R 4 is the fluorine atom.

3. The compound of claim 1 , wherein the alkyl group has 1 to 3 carbon atoms, where at least one among R 1 to R 4 is the fluorine atom.

4. The compound of claim 1 , wherein the fluoro-substituted alkyl group has 1 to 3 carbon atoms, where at least one among R 1 to R 4 is the fluorine atom.

5. The compound of claim 1 , wherein R 1 to R 4 are the fluorine atom.

6. The compound of claim 1 , wherein, A is —O— or —S—.

7. The compound of claim 1 , wherein, M 1 and M 2 are potassium.

8. The compound of claim 1 , wherein, M 1 and M 2 are sodium.

9. The compound of claim 1 , wherein R 1 to R 4 are the fluorine atom,
A is —O—,
M 1 and M 2 are sodium, and
n and m are each independently an integer of 1 to 3.

10. The compound of claim 1 , wherein the compound represented by Formula 1 is represented by Formula 1-1 below:

11. A polymer electrolyte membrane comprising the compound of claim 1 .

12. The polymer electrolyte membrane of claim 11 , wherein the polymer electrolyte membrane has a proton conductivity of 24 mS/cm to 38 mS/cm under the conditions of 80° C. and 50% relative humidity (RH).

13. The polymer electrolyte membrane of claim 11 , wherein the polymer electrolyte membrane has a proton conductivity of 92 mS/cm to 120 mS/cm under the conditions of 80° C. and 90% relative humidity (RH).

14. The polymer electrolyte membrane of claim 11 , further comprising a polymer support, and the compound is comprised in an amount of 0.5 wt % to 2.0 wt % based on a weight of the polymer support.

15. A fuel cell comprising:
a stack comprising at least two membrane electrode assemblies and a separator disposed between the membrane electrode assemblies;
a fuel supplier configured to supply fuel to the stack; and
an oxidizer supplier configured to supply an oxidizer to the stack,
wherein the membrane electrode assembly comprising an anode; a cathode; and the polymer electrolyte membrane of claim 11 disposed between the anode and the cathode.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Nat Univ Gyeongsang Iacf

Inventors

• Heo Pil Won
• Lee Jong Myung
• Lee Sung Chul
• Kim Ki Hyun
• Kim Byeong Seon
• Ko Han Sol
• Kim Mi Jeong
• Jeong Yu Gyeong
• Hwang Sean Soo

Classifications

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• H01M8/1067

  characterised by their physical properties, e.g. porosity, ionic conductivity or thickness · CPC title

• H01M8/1039

  halogenated, e.g. sulfonated polyvinylidene fluorides · CPC title

• H01M8/1027

  having carbon, oxygen and other atoms, e.g. sulfonated polyethersulfones [S-PES] · CPC title

• H01M8/1004

  characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title