Graphene synthesis
US-2019003042-A1 · Jan 3, 2019 · US
Negative electrode and lithium-sulfur battery comprising same
US2022376253A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022376253-A1 |
| Application number | US-202117772102-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 23, 2021 |
| Priority date | Jul 24, 2020 |
| Publication date | Nov 24, 2022 |
| Grant date | — |
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 negative electrode and a lithium-sulfur battery comprising the same are provided. The negative electrode comprises a negative electrode current collector and a protective layer which is disposed on at least one surface of the negative electrode current collector and contains graphene.
First claim
Opening claim text (preview).
1 . A negative electrode for a lithium-sulfur battery, the negative electrode comprising a negative electrode current collector and a protective layer, wherein the protective layer is disposed on at least one surface of the negative electrode current collector and contains graphene. 2 . The negative electrode according to claim 1 , wherein the protective layer includes monolayer graphene or multilayer graphene. 3 . The negative electrode according to claim 2 , wherein the multilayer graphene has 2 to 100 layers. 4 . The negative electrode according to claim 1 , wherein the graphene has a ratio of 2D peak and G peak of 0.2 to 2.0 in a Raman spectrum. 5 . The negative electrode according to claim 1 , wherein the graphene has a ratio of D peak and G peak of 0.01 to 0.6 in a Raman spectrum. 6 . The negative electrode according to claim 1 , wherein the protective layer has a thickness of 0.1 to 50 nm. 7 . The negative electrode according to claim 1 , wherein the protective layer is impermeable to lithium polysulfide. 8 . The negative electrode according to claim 1 , wherein the protective layer is formed by a chemical vapor deposition. 9 . The negative electrode according to claim 1 , wherein the negative electrode current collector comprises at least one selected from the group of nickel, copper, stainless steel, titanium, vanadium, chromium, manganese, iron, cobalt, zinc, molybdenum, tungsten, silver, gold, ruthenium, platinum, iridium, aluminum, tin, bismuth, and antimony. 10 . The negative electrode according to claim 1 , wherein the negative electrode current collector is in the form of film, sheet, foil, mesh, net, porous body, foam, or nonwoven fabric. 11 . The negative electrode according to claim 1 , wherein the negative electrode further comprises a negative electrode active material layer on the protective layer. 12 . The negative electrode according to claim 11 , wherein the negative electrode active material layer comprises lithium metal or lithium alloy. 13 . The negative electrode according to claim 11 , wherein the negative electrode active material layer comprises a lithium metal thin film. 14 . A lithium-sulfur battery comprising a positive electrode comprising a positive electrode active material; the negative electrode according to claim 1 ; and an electrolyte. 15 . The lithium-sulfur battery according to claim 14 , wherein the positive electrode active material comprises at least one selected from the group consisting of inorganic sulfur, Li 2 S n where n≥1, a disulfide compound, an organic sulfur compound and a carbon-sulfur polymer (C 2 S x ) n where x=2.5 to 50 and n≥2.
Assignees
Inventors
Classifications
Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title
Processes of manufacture in general · CPC title
- H01M4/134Primary
Electrodes based on metals, Si or alloys · CPC title
Selection of materials · CPC title
Negative electrodes · 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 US2022376253A1 cover?
- A negative electrode and a lithium-sulfur battery comprising the same are provided. The negative electrode comprises a negative electrode current collector and a protective layer which is disposed on at least one surface of the negative electrode current collector and contains graphene.
- Who is the assignee on this patent?
- Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/134. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Nov 24 2022 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).