Sulfide-Based Solid Electrolyte for Lithium Ion Cell, and Solid Electrolyte Compound
US-2017352916-A1 · Dec 7, 2017 · US
All-solid-state lithium ion secondary battery
US10777841B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10777841-B2 |
| Application number | US-201816014273-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 21, 2018 |
| Priority date | Jul 6, 2017 |
| Publication date | Sep 15, 2020 |
| Grant date | Sep 15, 2020 |
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Abstract
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Disclosed is an all-solid-state lithium ion secondary battery excellent in cycle characteristics. The battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein, for the anode active material particles, a value A obtained by the following formula (1) is 6.1 or more and 54.8 or less: A=S BET ×d med ×D Formula (1) where S BET is a BET specific surface area (m 2 /g) of the anode active material particles; d med is a median diameter D50 (μm) of the anode active material particles; and D is a density (g/cm 3 ) of the anode active material particles.
First claim
Opening claim text (preview).
The invention claimed is: 1. An all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein, for the anode active material particles, a value A obtained by the following formula (1) is 6.1 or more and 54.8 or less: A=S BET ×d med ×D Formula (1) where S BET is a BET specific surface area (m 2 /g) of the anode active material particles; d med is a median diameter D50 (μm) of the anode active material particles; and D is a density (g/cm 3 ) of the anode active material particles. 2. The all-solid-state lithium ion secondary battery according to claim 1 , wherein a value obtained by dividing, by the value A, a volume percentage (%) of the electroconductive material when a volume of the anode is determined as 100 volume %, is 0.05 or more and 0.50 or less. 3. An all-solid-state lithium ion secondary battery, wherein an anode is formed by using an anode mixture comprising anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein, for the anode active material particles, a value A obtained by the following formula (1) is 6.1 or more and 54.8 or less: A=S BET ×d med ×D Formula (1) where S BET is a BET specific surface area (m 2 /g) of the anode active material particles; d med is a median diameter D50 (μm) of the anode active material particles; and D is a density (g/cm 3 ) of the anode active material particles. 4. The all-solid-state lithium ion secondary battery according to claim 3 , wherein a value obtained by dividing, by the value A, a volume percentage (%) of the electroconductive material when a volume of the anode mixture is determined as 100 volume %, is 0.05 or more and 0.50 or less. 5. The all-solid-state lithium ion secondary battery according to claim 1 , wherein the solid electrolyte is a sulfide-based solid electrolyte. 6. The all-solid-state lithium ion secondary battery according to claim 3 , wherein the solid electrolyte is a sulfide-based solid electrolyte. 7. The all-solid-state lithium ion secondary battery according to claim 1 , wherein the electroconductive material is at least one carbonaceous material selected from the group consisting of carbon black, carbon nanotube and carbon nanofiber. 8. The all-solid-state lithium ion secondary battery according to claim 3 , wherein the electroconductive material is at least one carbonaceous material selected from the group consisting of carbon black, carbon nanotube and carbon nanofiber.
Assignees
Inventors
Classifications
- H01M10/0525Primary
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
- H01M4/134Primary
Electrodes based on metals, Si or alloys · CPC title
- H01M4/386Primary
Silicon or alloys based on silicon · CPC title
inorganic · CPC title
Solid materials · CPC title
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- What does patent US10777841B2 cover?
- Disclosed is an all-solid-state lithium ion secondary battery excellent in cycle characteristics. The battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consistin…
- Who is the assignee on this patent?
- Otaki Mitsutoshi, Ose Norihiro, Hama Shigenori, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 15 2020 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).