Interfacial engineering for stable lithium metal anodes
US-2016013462-A1 · Jan 14, 2016 · US
Fuel cell membrane electrode assembly (MEA) with hexagonal boron nitride thin film
US11075395B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11075395-B2 |
| Application number | US-201715854177-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 26, 2017 |
| Priority date | Feb 23, 2017 |
| Publication date | Jul 27, 2021 |
| Grant date | Jul 27, 2021 |
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Abstract
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Disclosed is a fuel cell membrane electrode assembly (MEA) embodiment including an anode layer; at least one exchange membrane that is disposed on the anode layer as either a single-layered structure including one exchange membrane or a multi-layered structure including a plurality of exchange membranes, each exchange membrane of the at least one exchange membrane consisting of a film comprising hexagonal boron, and the at least one exchange membrane having a total thickness ranging from 0.3 to 3 nm; an interfacial binding layer that completely covers an exposed surface of one exchange membrane which is obverse to the anode layer and that consists of poly(methylmethacrylate) (PMMA) as a binder material; and a cathode layer formed on the interfacial binding layer. Alternately, a fuel cell membrane electrode embodiment may completely eliminate the interfacial binding layer and both embodiments provide superior fuel cell performance.
First claim
Opening claim text (preview).
What is claimed is: 1. A fuel cell membrane electrode assembly (MEA) with a hexagonal boron nitride film as an exchange membrane, the fuel cell MEA, comprising: an anode layer; at least one exchange membrane that is disposed on the anode layer as either a single-layered structure including one exchange membrane or a multi-layered structure including a plurality of exchange membranes, each exchange membrane of the at least one exchange membrane consisting of a film comprising hexagonal boron nitride, and the at least one exchange membrane having a total thickness ranging from 0.3 to 3 nm; an interfacial binding layer that is formed to completely cover an exposed surface of one exchange membrane which is obverse to the anode layer, and that consists of poly(methylmethacrylate) (PMMA) as a binder material; and a cathode layer formed on the interfacial binding layer. 2. The fuel cell MEA of claim 1 , wherein the total thickness of the at least one exchange membrane ranges from 0.3 to 1.7 nm. 3. The fuel cell MEA of claim 1 , wherein the at least one exchange membrane has the single-layered structure and consists of a single film that comprises a monatomic layer of hexagonal boron nitride. 4. The fuel cell MEA of claim 1 , wherein the film comprising hexagonal boron nitride is functionalized by H, O, F, or combinations thereof. 5. The fuel cell MEA according to claim 1 , wherein the at least one exchange membrane has the multi-layered structure and consists of a plurality of films that are laminated to one another, each film of the plurality of films consisting of a monatomic layer of hexagonal boron nitride. 6. The fuel cell MEA of claim 5 , wherein the total thickness of the at least one exchange membrane ranges from 0.3 to 1.7 nm. 7. The fuel cell MEA of claim 1 , wherein the interfacial binding layer has a thickness ranging from 2 to 50 μm. 8. The fuel cell MEA of claim 5 , wherein the interfacial binding layer has a thickness ranging from 2 to 50 μm.
Assignees
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Classifications
Inorganic layers on the polymer electrolytes, e.g. inorganic coatings · CPC title
Fuel cells · CPC title
Direct alcohol fuel cells [DAFC], e.g. direct methanol fuel cells [DMFC] · CPC title
Metals of platinum group (H01M4/94 {, H01M4/9058} take precedence) · CPC title
Preventing means for fuel crossover · CPC title
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- What does patent US11075395B2 cover?
- Disclosed is a fuel cell membrane electrode assembly (MEA) embodiment including an anode layer; at least one exchange membrane that is disposed on the anode layer as either a single-layered structure including one exchange membrane or a multi-layered structure including a plurality of exchange membranes, each exchange membrane of the at least one exchange membrane consisting of a film comprisin…
- Who is the assignee on this patent?
- Ulsan Nat Inst Science & Tech Unist
- What technology area does this patent fall under?
- Primary CPC classification H01M8/1004. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 27 2021 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).