Porous composite electrode having ratio gradient of active material/current-collecting material by three-dimensional nanostructure, method for manufacturing electrode and secondary battery including the electrode
US-2022052347-A1 · Feb 17, 2022 · US
Electrode and electricity storage device
US2022238891A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022238891-A1 |
| Application number | US-202217647975-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 13, 2022 |
| Priority date | Jan 22, 2021 |
| Publication date | Jul 28, 2022 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
Provided is an electrode including: a current, collector; an electrode material mixture; and an electrode tab, the current collector being a porous metal body having a region A and a region B with a porosity lower than that of the region A, the region A having pores filled with the electrode material mixture, the electrode tab being fixed on the region B, the region A having a subregion A 1 and a subregion A 2 with a porosity lower than that of the subregion A 1 , the subregion A 2 being more distant from the electrode tab than the subregion A 1 . Also provided is an electricity storage device including the electrode.
First claim
Opening claim text (preview).
What is claimed is: 1 . An electrode comprising: a current collector; an electrode material mixture; and an electrode tab, the current collector being a porous metal body having a region A and a region B with a porosity lower than that of the region A, the region A having pores filled with the electrode material mixture, the electrode tab being fixed on the region B, the region A having a subregion A 1 and a subregion A 2 with a porosity lower than that of the subregion A 1 , the subregion A 2 being more distant from the electrode tab than the subregion A 1 . 2 . The electrode according to claim 1 , wherein the region B has a subregion B 1 on which the electrode tab is fixed and a subregion B 2 on which no electrode tab is fixed, and the subregion B 1 has a porosity lower than that of the region A. 3 . The electrode according to claim 1 , wherein the region A further has a subregion A 3 that connects the subregion A 2 and the region B, and the subregion A 3 has a porosity lower than that of the subregion A 1 . 4 . The electrode according to claim 2 , wherein the region A further has a subregion A 3 that connects the subregion A 2 and the region B, and the subregions A 1 , A 2 , A 3 , B 1 , and B 2 respectively have a porosity of ε A1 , a porosity of ε A2 , a porosity of ε A3 , a porosity of ε B1 , and a porosity of ε B2 satisfying the formula: ε A1 >ε A3 ≥ε A2 >ε B2 ≥ε B1 . 5 . The electrode according to claim 1 , wherein the current collector has a substantially rectangular parallelepiped shape. 6 . An electricity storage device comprising the electrode according to claim 1 .
Assignees
Inventors
Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
- H01M4/80Primary
Porous plates, e.g. sintered carriers · CPC title
- H01M4/661Primary
Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title
Energy storage using batteries · CPC title
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- What does patent US2022238891A1 cover?
- Provided is an electrode including: a current, collector; an electrode material mixture; and an electrode tab, the current collector being a porous metal body having a region A and a region B with a porosity lower than that of the region A, the region A having pores filled with the electrode material mixture, the electrode tab being fixed on the region B, the region A having a subregion A 1 an…
- Who is the assignee on this patent?
- Honda Motor Co Ltd, Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification H01M4/80. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jul 28 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).