Fuel cell system and aircraft having an inerting system
US-2024379984-A1 · Nov 14, 2024 · US
Ammonia fuel cell
US11658309B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11658309-B2 |
| Application number | US-202017437765-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 2, 2020 |
| Priority date | Mar 14, 2019 |
| Publication date | May 23, 2023 |
| Grant date | May 23, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A fuel cell is an ammonia fuel cell using an ammonia-containing fuel. A catalyst used for an anode of the fuel cell is a ruthenium complex having two first ligands and one second ligand, and the first ligand is pyridine or a condensed cyclic pyridine compound with or without a substituent, and the second ligand is 2,2′-bipyridyl-6,6′-dicarboxylic acid with or without a substituent on a pyridine ring.
First claim
Opening claim text (preview).
The invention claimed is: 1. An ammonia fuel cell using an ammonia-containing fuel, wherein a catalyst used for an anode of the fuel cell is a ruthenium complex having two first ligands and one second ligand, wherein the first ligand is pyridine or a condensed cyclic pyridine compound with or without a substituent, and the second ligand is 2,2′-bipyridyl-6,6′-dicarboxylic acid with or without a substituent on a pyridine ring. 2. The ammonia fuel cell according to claim 1 , wherein the catalyst is a ruthenium complex expressed by any of Chemical Formula (A) to Chemical Formula (C), (where Py denotes pyridine with or without an alkyl group, an alkoxy group, an aryl group or a halogen atom in 4-position or isoquinoline with or without an alkyl group, an alkoxy group, an aryl group or a halogen atom in 6-position; R denotes an alkyl group, an alkoxy group, an aryl group or a halogen atom, and X denotes a monovalent anion). 3. The ammonia fuel cell according to claim 1 , wherein ammonia as the fuel is generated by a reaction of an ammonium salt and a base in situ. 4. The ammonia fuel cell according to claim 3 , wherein the base is a pyridine with or without a substituent in at least one of 2-position to 6-position. 5. The ammonia fuel cell according to claim 4 , wherein the base is 2,4,6-collidine. 6. The ammonia fuel cell according to claim 2 , wherein ammonia as the fuel is generated by a reaction of an ammonium salt and a base in situ. 7. The ammonia fuel cell according to claim 6 , wherein the base is a pyridine with or without a substituent in at least one of 2-position to 6-position. 8. The ammonia fuel cell according to claim 7 , wherein the base is 2,4,6-collidine.
Assignees
Inventors
Classifications
Organic or organo-metallic compounds · CPC title
- H01M8/222Primary
Fuel cells in which the fuel is based on compounds containing nitrogen, e.g. hydrazine, ammonia · CPC title
Fuel cells · CPC title
- H01M4/9041Primary
Metals or alloys (H01M4/92 takes precedence) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11658309B2 cover?
- A fuel cell is an ammonia fuel cell using an ammonia-containing fuel. A catalyst used for an anode of the fuel cell is a ruthenium complex having two first ligands and one second ligand, and the first ligand is pyridine or a condensed cyclic pyridine compound with or without a substituent, and the second ligand is 2,2′-bipyridyl-6,6′-dicarboxylic acid with or without a substituent on a pyridine…
- Who is the assignee on this patent?
- Univ Tokyo, Nissan Chemical Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M8/222. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 23 2023 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).