Battery and method for producing the same
US-2024154105-A1 · May 9, 2024 · US
All-solid-state battery comprising a pre-lithiated silicon negative electrode
US12283662B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12283662-B2 |
| Application number | US-202318470746-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 20, 2023 |
| Priority date | Aug 8, 2023 |
| Publication date | Apr 22, 2025 |
| Grant date | Apr 22, 2025 |
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Abstract
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Disclosed is a negative electrode for an all-solid-state battery and an all-solid-state battery including the negative electrode. More specifically, disclosed is a pre-lithiated silicon negative electrode, and an all-solid-state battery comprising the same.
First claim
Opening claim text (preview).
The invention claimed is: 1. An all-solid-state battery, comprising: a negative electrode comprising a negative electrode active material layer, said negative electrode active material layer comprising silicon; a positive electrode comprising lithium cobalt oxide (LCO), Li 6 PS 5 Cl and vapor grown carbon fibers; a sulfide-containing solid electrolyte between the negative electrode and the positive electrode; and an interfacial layer between the sulfide-containing solid electrolyte and the negative electrode active material layer, wherein: the negative electrode is pre-lithiated, wherein the negative electrode active material layer contains 0.25 mol to 2 mol of lithium based on 1 mol of silicon, wherein the sulfide-containing solid electrolyte is an argyrodite-based sulfide-containing solid electrolyte Li 6 PS 5 Cl, and wherein the interfacial layer comprises Li 2 S. 2. The all-solid-state battery according to claim 1 , wherein the negative electrode active material layer contains 1 mol to 2 mol of lithium based on 1 mol of silicon. 3. The all-solid-state battery according to claim 1 , wherein after charging the all-solid-state battery, a content of Li 2 S in the interfacial layer is 1 mol % to 50 mol % based on 100 mol % of a total content of the sulfide-containing solid electrolyte and the interfacial layer. 4. The all-solid-state battery according to claim 3 , wherein after charging the all-solid-state battery, a content of Li 2 S in the interfacial layer is 5 mol % to 45 mol % based on 100 mol % of a total content of the sulfide-containing solid electrolyte and the interfacial layer. 5. The all-solid-state battery according to claim 3 , wherein after charging the all-solid-state battery, a content of Li 2 S in the interfacial layer is 10 mol % to 40 mol % based on 100 mol % of a total content of the sulfide-containing solid electrolyte and the interfacial layer. 6. The all-solid-state battery according to claim 1 , wherein the silicon comprises a plurality of silicon particles, and the silicon particles have a particle size of 0.1 μm to 10 μm. 7. The all-solid-state battery according to claim 1 , wherein a content of lithium remaining in the negative electrode active material layer is 0.1 mol or more based on 1 mol of silicon, in a state where the all-solid-state battery is discharged after a plurality of charging/discharging cycles. 8. The all-solid-state battery according to claim 1 , wherein the negative electrode active material layer further comprises a conductive material. 9. The all-solid-state battery according to claim 1 , wherein the negative electrode active material layer contains 0.5 mol to 1.5 mol of lithium based on 1 mol of silicon. 10. The all-solid-state battery according to claim 1 , wherein the negative electrode active material layer contains 0.75 mol to 1.25 mol of lithium based on 1 mol of silicon.
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Classifications
being polymers · CPC title
Construction or manufacture · CPC title
- H01M4/134Primary
Electrodes based on metals, Si or alloys · CPC title
Energy storage using batteries · CPC title
inorganic · CPC title
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Frequently asked questions
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- What does patent US12283662B2 cover?
- Disclosed is a negative electrode for an all-solid-state battery and an all-solid-state battery including the negative electrode. More specifically, disclosed is a pre-lithiated silicon negative electrode, and an all-solid-state battery comprising the same.
- Who is the assignee on this patent?
- Lg Energy Solution Ltd, Univ California
- What technology area does this patent fall under?
- Primary CPC classification H01M4/134. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 22 2025 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).