Chip form ultracapacitor
US-12165808-B2 · Dec 10, 2024 · US
Nanodendrite with ruthenium oxide capacitor and method
US2020273633A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020273633-A1 |
| Application number | US-201616063130-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 15, 2016 |
| Priority date | Dec 15, 2015 |
| Publication date | Aug 27, 2020 |
| Grant date | — |
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Abstract
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A metallic nanodendrite electrode and methods are shown. In one example, the metallic nanodendrite is coated with ruthenium oxide and is used as an electrode in a capacitor.
First claim
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What is claimed is: 1 . An electrode, comprising: a mat of branched metal nanofibers; and a ruthenium oxide coating on an outer surface of the branched metal nanofibers. 2 . The electrode of claim 1 , wherein the mat of branched metal nanofibers include branched nickel nanofibers. 3 . The electrode of claim 1 , wherein the ruthenium oxide coating includes hydrous ruthenium dioxide. 4 . The electrode of claim 1 , wherein the electrode is one of a pair of electrodes in a capacitor. 5 . The electrode of claim 4 , wherein the capacitor includes a pair of the electrodes of claim 1 separated by a dielectric. 6 . A method of forming an electrode, comprising: forming nickel nanowires on a nickel foam substrate; etching the nickel nanowires to form branched nickel oxalate structures; reducing the branched nickel oxalate structures to form branched nickel structures; and coating the branched nickel structures with ruthenium oxide. 7 . The method of claim 6 , wherein etching the nickel nanowires includes etching in oxalic acid at a temperature of approximately 120° C. 8 . The method of claim 6 , wherein reducing the branched nickel oxalate structures includes reducing in a hydrogen atmosphere. 9 . The method of claim 6 , further including coupling the electrode adjacent to a second electrode to form a capacitor.
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Classifications
- H01G11/36Primary
Nanostructures, e.g. nanofibres, nanotubes or fullerenes · CPC title
- H01G11/26Primary
characterised by their structure, e.g. multi-layered, porosity or surface features · CPC title
specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) · CPC title
Metal oxides · CPC title
Local etching · CPC title
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Frequently asked questions
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- What does patent US2020273633A1 cover?
- A metallic nanodendrite electrode and methods are shown. In one example, the metallic nanodendrite is coated with ruthenium oxide and is used as an electrode in a capacitor.
- Who is the assignee on this patent?
- Univ California
- What technology area does this patent fall under?
- Primary CPC classification H01G11/36. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Aug 27 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).