Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Electrode And Secondary Battery Including Same
US2022158194A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022158194-A1 |
| Application number | US-202017442876-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 27, 2020 |
| Priority date | Mar 28, 2019 |
| Publication date | May 19, 2022 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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The present invention relates to an electrode and a secondary battery including the same, the electrode including an electrode active material layer, wherein: the electrode active material layer includes an electrode active material, a hydrogenated nitrile butadiene rubber, and a conductive agent; the conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded; and the carbon nanotube structure is included in the electrode active material layer in an amount of 0.01-0.5 wt %.
First claim
Opening claim text (preview).
1 . An electrode comprising: an electrode active material layer, wherein: the electrode active material layer comprises an electrode active material, a hydrogenated nitrile butadiene rubber, and a conductive agent; the conductive agent comprises a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded; and the carbon nanotube structure is included in the electrode active material layer in an amount of 0.01-0.5 wt %. 2 . The electrode of claim 1 , wherein the carbon nanotube structures are connected to each other to form a network structure in the electrode. 3 . The electrode of claim 1 , wherein, in the carbon nanotube structure, the single-walled carbon nanotube units are arranged side by side and bonded. 4 . The electrode of claim 1 , wherein the single-walled carbon nanotube unit has an average diameter of 0.5 nm to 10 nm. 5 . The electrode of claim 1 , wherein the single-walled carbon nanotube unit has an average length of 1 μm to 100 μm. 6 . The electrode of claim 1 , wherein the single-walled carbon nanotube unit has a specific surface area of 500 m 2 /g to 1,000 m 2 /g. 7 . The electrode of claim 1 , wherein the hydrogenated nitrile butadiene rubber has a weight average molecular weight of 50,000 g/mol to 500,000 g/mol. 8 . The electrode of claim 1 , wherein a weight ratio of the carbon nanotube structure and the hydrogenated nitrile butadiene rubber is 1:0.1 to 1:10. 9 . The electrode of claim 1 , wherein the electrode is a positive electrode. 10 . A secondary battery comprising the electrode of claim 1 .
Assignees
Inventors
Classifications
Physical characteristics, e.g. porosity, surface area · CPC title
Derivatisation; Solubilisation; Dispersion in solvents · CPC title
single-walled · CPC title
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
- H01M4/625Primary
Carbon or graphite · CPC title
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- What does patent US2022158194A1 cover?
- The present invention relates to an electrode and a secondary battery including the same, the electrode including an electrode active material layer, wherein: the electrode active material layer includes an electrode active material, a hydrogenated nitrile butadiene rubber, and a conductive agent; the conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon…
- Who is the assignee on this patent?
- Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/625. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu May 19 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).