Active material and battery
US-11075372-B2 · Jul 27, 2021 · US
Active material
US11502298B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11502298-B2 |
| Application number | US-202016906208-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 19, 2020 |
| Priority date | Jul 19, 2019 |
| Publication date | Nov 15, 2022 |
| Grant date | Nov 15, 2022 |
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- Title
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- Abstract
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- First independent claim
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Abstract
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A main object of the present disclosure is to provide an active material wherein an expansion upon intercalation of a metal ion such as a Li ion is suppressed. The present disclosure achieves the object by providing an active material comprising a silicon clathrate type crystal phase, and the active material includes a Na element, a Si element and a M element that is a metal element with an ion radius larger than the Si element, and a proportion of the M element to a total of the Si element and the M element is 0.1 atm % or more and 5 atm % or less.
First claim
Opening claim text (preview).
What is claimed is: 1. An all solid state battery comprising an anode layer, a cathode layer, and a solid electrolyte layer including a solid electrolyte and formed between the cathode layer and the anode layer, wherein one of the anode layer and the cathode layer includes an active material comprising a silicon clathrate type crystal phase, the active material includes a Na element, a Si element and a Ge element, a proportion of the Ge element to a total of the Si element and the Ge element is 0.5 atm % or more and 1 atm % or less, an atomic part of the Na element to 136 atomic parts of the Si element is 2.0 parts or more and 5.4 parts or less, such that the active material has a composition represented by Na w Ge z Si 136−z where [0<w, w≤24 and 0.136≤z≤6.8] 2.0≤w≤5.4 and 0.5≤z≤1.
Assignees
Inventors
Classifications
Electrodes based on metals, Si or alloys · CPC title
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
by d-values or two theta-values, e.g. as X-ray diagram · CPC title
Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title
by coating on electrode collectors · CPC title
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Frequently asked questions
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- What does patent US11502298B2 cover?
- A main object of the present disclosure is to provide an active material wherein an expansion upon intercalation of a metal ion such as a Li ion is suppressed. The present disclosure achieves the object by providing an active material comprising a silicon clathrate type crystal phase, and the active material includes a Na element, a Si element and a M element that is a metal element with an ion…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01B33/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 15 2022 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).