Liquid Electrolyte Composition, and Electrochemical Cell Comprising Said Electrolyte Composition
US-2024347772-A1 · Oct 17, 2024 · US
Negative electrode and secondary battery including the same
US2018309162A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018309162-A1 |
| Application number | US-201715771323-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 4, 2017 |
| Priority date | Jul 4, 2016 |
| Publication date | Oct 25, 2018 |
| Grant date | — |
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Abstract
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Provided are a negative electrode including a current collector, a first active material layer including first active material particles and disposed on the current collector, and a first pattern and a second pattern alternately disposed separately from each other on the first active material layer, wherein the first pattern includes first pattern active material particles, the second pattern includes second pattern active material particles, a thickness of the first pattern is greater than a thickness of the second pattern, and a volume expansion rate of the second pattern is greater than a volume expansion rate of the first pattern, and a secondary battery including the negative electrode.
First claim
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1 . A negative electrode comprising: a current collector; a first active material layer including first active material particles and disposed on the current collector; and a first pattern and a second pattern alternately disposed separately from each other on the first active material layer, wherein: the first pattern includes first pattern active material particles; the second pattern includes second pattern active material particles; a thickness of the first pattern is greater than a thickness of the second pattern; and a volume expansion rate of the second pattern is greater than a volume expansion rate of the first pattern. 2 . The negative electrode according to claim 1 , wherein: the first active material particles and the first pattern active material particles include artificial graphite; and the second pattern active material particles include natural graphite. 3 . The negative electrode according to claim 1 , wherein: the first active material particles include natural graphite; the first pattern active material particles and the second pattern active material particles include artificial graphite; and porosity of the second pattern is lower than porosity of the first pattern. 4 . The negative electrode according to claim 3 , wherein a difference between the porosity of the first pattern and the porosity of the second pattern is 5 percentage points or more. 5 . The negative electrode according to claim 1 , wherein: the first active material particles include artificial graphite; the first pattern active material particles and the second pattern active material particles include natural graphite; and porosity of the second pattern is lower than porosity of the first pattern. 6 . The negative electrode according to claim 5 , wherein a difference between the porosity of the first pattern and the porosity of the second pattern is 5 percentage points or more. 7 . The negative electrode according to claim 1 , wherein the thickness of the first pattern is in a range of 1.1 to 3 times the thickness of the second pattern. 8 . A secondary battery comprising: the negative electrode of claim 1 ; a positive electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte.
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Classifications
Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
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- What does patent US2018309162A1 cover?
- Provided are a negative electrode including a current collector, a first active material layer including first active material particles and disposed on the current collector, and a first pattern and a second pattern alternately disposed separately from each other on the first active material layer, wherein the first pattern includes first pattern active material particles, the second pattern i…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Oct 25 2018 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).