Positive electrode material including positive electrode active material and solid electrolyte and battery containing the same
US-11600854-B2 · Mar 7, 2023 · US
Battery
US2022336850A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022336850-A1 |
| Application number | US-202217659114-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 13, 2022 |
| Priority date | Apr 20, 2021 |
| Publication date | Oct 20, 2022 |
| Grant date | — |
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- Title
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Abstract
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A main object of the present disclosure is to provide a battery superior in safety against heating. The present disclosure achieves the object by providing a battery comprising cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order along a thickness direction, and the anode current collector includes a coating layer including an oxide active material, on a surface of the anode active material layer side, the solid electrolyte layer includes a first solid electrolyte layer, and a second solid electrolyte layer placed between the first solid electrolyte layer and the anode active material layer, the first solid electrolyte layer includes a halide solid electrolyte, and the second solid electrolyte layer includes a sulfide solid electrolyte.
First claim
Opening claim text (preview).
What is claimed is: 1 . A battery comprising a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order along a thickness direction, and the anode current collector includes a coating layer including an oxide active material, on a surface of the anode active material layer side, the solid electrolyte layer includes a first solid electrolyte layer, and a second solid electrolyte layer placed between the first solid electrolyte layer and the anode active material layer, the first solid electrolyte layer includes a halide solid electrolyte, and the second solid electrolyte layer includes a sulfide solid electrolyte. 2 . The battery according to claim 1 , wherein the oxide active material includes at least one of a lithium titanate, and a niobium titanium based oxide. 3 . The battery according to claim 1 , wherein the halide solid electrolyte is represented by the following composition formula (1), Li α M β X γ formula (1), α, β, and γ are respectively a value more than 0, “M” includes at least one selected from the group consisting of a metal element other than Li, and a metalloid element, and “X” includes at least one selected from the group consisting of F, Cl, Br, and I. 4 . The battery according to claim 3 , wherein the halide solid electrolyte is represented by Li 6−3A M A X 6 , wherein “A” satisfies 0<A<2, “M” is at least one of Y and In, and “X” is at least one of Cl and Br. 5 . The battery according to claim 1 , wherein the halide solid electrolyte is a chloride solid electrolyte. 6 . The battery according to claim 1 , wherein the sulfide solid electrolyte includes Li, P, and S. 7 . The battery according to claim 1 , wherein the anode active material layer includes an anode active material whose total volume expansion rate, due to charge, is 14% or more. 8 . The battery according to claim 1 , wherein an anode active material is a Si based active material. 9 . The battery according to claim 1 , wherein a ratio of a thickness of the coating layer with respect to a thickness of the anode active material layer is 3% or more and 20% or less.
Assignees
Inventors
Classifications
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
inorganic · CPC title
- H01M10/0562Primary
Solid materials · CPC title
Li-accumulators · CPC title
- H01M10/0585Primary
of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title
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Frequently asked questions
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- What does patent US2022336850A1 cover?
- A main object of the present disclosure is to provide a battery superior in safety against heating. The present disclosure achieves the object by providing a battery comprising cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order along a thickness direction, and the anode current coll…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd, Panasonic Holdings Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0562. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Oct 20 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).