Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane electrode assembly and fuel cell stack
US-2021184228-A1 · Jun 17, 2021 · US
Fuel cell catalyst, method for preparing the same, and fuel cell comprising the same
US12407001B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12407001-B2 |
| Application number | US-202217895639-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 25, 2022 |
| Priority date | Aug 30, 2021 |
| Publication date | Sep 2, 2025 |
| Grant date | Sep 2, 2025 |
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Abstract
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A fuel cell catalyst including a conductive carrier and core-shell nanoparticles supported on the carrier. The core includes platinum and a transition metal and the shell includes a secondary metal. An electrochemical specific activity measured at a voltage of 0.05 V to 1.05 V (vs. RHE) in a potential range, at a scan rate of 5 mV/s and a rotation rate of 1,600 rpm in an O 2 -saturated 0.1 M HClO 4 electrolyte solution is 0.3 mA/cm2 to 0.6 mA/cm2, and a mass activity is 0.05 mA/μg to 0.08 mA/μg.
First claim
Opening claim text (preview).
What is claimed is: 1. A fuel cell catalyst comprising: a conductive carrier; and core-shell nanoparticles supported on the carrier, wherein the core includes platinum and a transition metal, the shell includes a secondary metal, an electrochemical specific activity measured at a voltage of 0.05 V to 1.05 V (vs. RHE) in a potential range, at a scan rate of 5 mV/s and a rotation rate of 1,600 rpm in an O 2 -saturated 0.1 M HClO 4 electrolyte solution is 0.3 mA/cm 2 to 0.6 mA/cm 2 , and a mass activity is 0.05 mA/μg to 0.08 mA/μg. 2. The fuel cell catalyst of claim 1 , wherein the transition metal is one or more selected from the group consisting of cobalt (Co), nickel (Ni), copper (Cu), and iron (Fe). 3. The fuel cell catalyst of claim 1 , wherein the secondary metal is one or more selected from the group consisting of silver (Ag), gold (Au), palladium (Pd), and iridium (Ir). 4. The fuel cell catalyst of claim 1 , wherein the conductive carrier is one or more selected from the group consisting of carbon black, Ketjen black, and metal oxide. 5. The fuel cell catalyst of claim 1 , wherein the core-shell nanoparticles have a diameter of 3 nm to 6 nm and the shell has a thickness of 0.3 nm to 1.0 nm. 6. The fuel cell catalyst of claim 1 , wherein the fuel cell catalyst has an electrochemical specific activity of 0.4 mA/cm 2 to 0.6 mA/cm 2 and a mass activity of 0.06 mA/μg to 0.08 mA/μg measured at a voltage of 0.05 V to 1.05 V (vs. RHE) in a potential range, at a scan rate of 5 mV/s and a rotation rate of 1,600 rpm in an O 2 -saturated 0.1 M HClO 4 electrolyte solution. 7. A fuel cell comprising: a positive electrode; a negative electrode facing the positive electrode; and an electrolyte membrane located between the positive electrode and the negative electrode, wherein at least one among the positive electrode and the negative electrode includes the fuel cell catalyst of claim 1 .
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Classifications
Heat treatment, e.g. drying, baking · CPC title
Fuel cells with polymeric electrolytes · CPC title
on carbon or graphite · CPC title
- H01M4/925Primary
supported on carriers, e.g. powder carriers · CPC title
Alloys or mixtures with metallic elements · CPC title
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- What does patent US12407001B2 cover?
- A fuel cell catalyst including a conductive carrier and core-shell nanoparticles supported on the carrier. The core includes platinum and a transition metal and the shell includes a secondary metal. An electrochemical specific activity measured at a voltage of 0.05 V to 1.05 V (vs. RHE) in a potential range, at a scan rate of 5 mV/s and a rotation rate of 1,600 rpm in an O 2 -saturated 0.1 M HC…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Corp, Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification H01M4/925. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 02 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).