Electrode for polymer electrolyte membrane fuel cell comprising antioxidant and membrane-electrode assembly comprising same

Patent metadata

Field	Value
Publication number	US-11799089-B2
Application number	US-202217571662-A
Country	US
Kind code	B2
Filing date	Jan 10, 2022
Priority date	Jul 5, 2021
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

The present disclosure relates to antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst, which includes cerium hydrogen phosphate (HCe2(PO4)3(H2O)) in the form of a nanofiber, and an electrode and a membrane-electrode assembly including the same. The electrode for a polymer electrolyte membrane fuel cell of the present disclosure, wherein the antioxidant is dispersed, can improve the mechanical strength of an electrode catalyst layer and can minimize deterioration of chemical durability even after long-term operation. And, a fuel cell including the same can exhibit high output performance and can operate stably even after long-term operation.

First claim

What is claimed is:

1. An antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst, comprising a hydrate of a compound containing cerium hydrogen phosphate (HCe 2 (PO 4 ) 3 (H 2 O)) in the form of a nanofiber.

2. The antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst according to claim 1 , wherein the antioxidant is a radical scavenger.

3. The antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst according to claim 1 , wherein the hydrate of a compound containing cerium hydrogen phosphate (HCe 2 (PO 4 ) 3 (H 2 O)) is a solid acid.

4. The antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst according to claim 1 , wherein the nanofiber has a diameter of 10-900 nm.

5. An electrode for a polymer electrolyte membrane fuel cell wherein the antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst according to claim 1 is dispersed.

6. The electrode for a polymer electrolyte membrane fuel cell according to claim 5 , wherein the electrode is based on one or metal selected from platinum (Pt), ruthenium (Ru), rhodium (Rh), molybdenum (Mo), osmium (Os), iridium (Ir), rhenium (Re), palladium (Pd), vanadium (V), tungsten (W), cobalt (Co), iron (Fe), selenium (Se), nickel (Ni), bismuth (Bi), tin (Sn), chromium (Cr), titanium (Ti), gold (Au), cerium (Ce), silver (Ag) and copper (Cu).

7. The electrode for a polymer electrolyte membrane fuel cell according to claim 5 , wherein the electrode is one wherein the metal is supported on porous carbon.

8. The electrode for a polymer electrolyte membrane fuel cell according to claim 5 , wherein the electrode comprises a fluorine-based ionomer, a perfluorosulfonate-based ionomer and a hydrocarbon-based polymer ionomer.

9. The electrode for a polymer electrolyte membrane fuel cell according to claim 5 , wherein the electrode for a polymer electrolyte membrane fuel cell is used in a fuel cell comprising any one selected from a polymer electrolyte based on a fluorine-based ionomer, a perfluorosulfonate-based ionomer and a hydrocarbon-based ionomer.

Assignees

• Korea Inst Sci & Tech

Inventors

• Lee So Young
• Lee Seung Ju
• Choi Jin Hyeon
• Jung Jeawoo
• Kim Hyoung-Juhn
• Yoo Sung Jong
• Park Hee-Young
• Seo Bora
• Kim Jin Young
• Jang Jong Hyun

Classifications

• H01M4/8663 Primary

  Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers · CPC title

• H01M4/8605

  Porous electrodes · CPC title

• H01M4/9041

  Metals or alloys (H01M4/92 takes precedence) · CPC title

• H01M4/9083

  on carbon or graphite · CPC title

• H01M4/926

  on carbon or graphite · CPC title