Secondary battery electrode
US-2020075937-A1 · Mar 5, 2020 · US
Battery electrode analysis method
US11650223B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11650223-B2 |
| Application number | US-201915734784-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 15, 2019 |
| Priority date | Oct 19, 2018 |
| Publication date | May 16, 2023 |
| Grant date | May 16, 2023 |
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Abstract
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The present disclosure relates to a method for analyzing an electrode for a battery, which has the advantage of being capable of more easily distinguishing between the constituent materials of the electrode such as the electrode active material, the conductive material, and the pores, by using scanning spreading resistance microscopy.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for analyzing an electrode for a battery, comprising: preparing an electrode for a secondary battery comprising an electrode active material, a conductive material, and pores; preparing an electrode cross-section sample by irradiating the electrode for a secondary battery with an ion beam from an ion milling apparatus; obtaining resistance value data of the electrode active material, the conductive material and the pores in the electrode cross-section sample by scanning spreading resistance microscopy; obtaining a logarithmic scale image by changing the resistance value data to a logarithmic scale; obtaining a linear scale image by changing the resistance value data to a linear scale; and obtaining a merged image by merging the logarithmic scale image with the linear scale image. 2. The method of claim 1 , further comprising distinguishing between and quantifying a region of the electrode active material, a region of the conductive material and a region of the pores in the electrode cross-section sample, by analyzing the merged image. 3. The method of claim 1 , further comprising, before the preparing the electrode cross-section sample, filling pores in the electrode for a secondary battery with an epoxy group-containing polymer by impregnating the electrode for a secondary battery with the epoxy group-containing polymer. 4. The method of claim 3 , further comprising measuring a resistance value of the epoxy group-containing polymer filling the pores of the electrode cross-section sample. 5. The method of claim 1 , wherein the ion beam is an argon ion beam. 6. The method of claim 1 , wherein an ion beam current of the ion milling apparatus is 100 μA to 250 μA.
Assignees
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Industrial image inspection · CPC title
Processes of manufacture · CPC title
Image acquisition · CPC title
from scanning electron microscope · CPC title
Industrial image inspection · CPC title
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Frequently asked questions
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- What does patent US11650223B2 cover?
- The present disclosure relates to a method for analyzing an electrode for a battery, which has the advantage of being capable of more easily distinguishing between the constituent materials of the electrode such as the electrode active material, the conductive material, and the pores, by using scanning spreading resistance microscopy.
- Who is the assignee on this patent?
- Lg Chemical Ltd, Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01Q30/04. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 16 2023 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).