# US 12,763,358 B2 · Electrolyte formulation with silicon-containing additive for lithium-ion batteries

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- Number: US 12,763,358 B2
- Document ID: US12763358B2
- Status: Granted
- Kind: B2
- Application number: 18/341,313
- Filed: 2023-06-26
- Published: 2025-01-02
- Granted: 2026-10-13
- Earliest claimed: 2023-06-26
- Assignees: Nissan North America, Inc.
- Applicants: Nissan North America, Inc.
- Inventors: Balachandran Gadaguntla Radhakrishnan; Shigemasa Kuwata; Somayeh Zamani; Bharat Gattu; Dianne Atienza Hay; Simran Kumari
- Web page: https://patentgrep.com/patent/US12763358B2

## CPC

- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 4/386: {Silicon or alloys based on silicon}
- H01M 4/583: Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M 10/0567: characterised by the additives
- H01M 10/0568: characterised by the solutes
- H01M 10/0569: characterised by the solvents
- H01M 2004/027: {Negative electrodes}
- H01M 2004/028: {Positive electrodes}
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

## Abstract

A lithium-ion battery has anode active material, nickel-based cathode active material, and an electrolyte. The electrolyte has the following formulation: a carbonate-based solvent; LiPF6; vinylene carbonate; and an additive that satisfies the following: less than or equal to nine carbons; at least one unsaturated bond; a predicted oxidation potential Vox of 2.0<Vox<4.5; and a five-membered ring with a silicon heteroatom.

## Claims

### Claim 1

A lithium-ion battery, comprising:
anode active material;
nickel-based cathode active material; and
an electrolyte having a formulation as follows:
a carbonate-based solvent;
LiPF6;
vinylene carbonate; and
one or more additives selected from:

### Claim 2 (depends on 1)

The lithium-ion battery of claim 1, wherein the nickel-based cathode active material has a nickel content of greater than 80%.

### Claim 3 (depends on 1)

The lithium-ion battery of claim 1, wherein the anode active material is graphite.

### Claim 4 (depends on 1)

The lithium-ion battery of claim 1, wherein the anode active material is a silicon-based material.

### Claim 5

A lithium-ion battery, comprising:
anode active material;
nickel-based cathode active material; and
an electrolyte comprising:
a solvent;
a lithium salt;
vinylene carbonate; and
one or more additives selected from:

### Claim 6 (depends on 5)

The lithium-ion battery of claim 5, wherein the solvent is one or more of ethylene carbonate, diethyl carbonate and fluoroethylene carbonate and the lithium salt is LiPF6.

### Claim 7 (depends on 5)

The lithium-ion battery of claim 5, wherein the solvent is one or both of dioxolane and dimethoxyethane and the lithium salt is one or both of LiTFSI and LiFSI.

### Claim 8 (depends on 5)

The lithium-ion battery of claim 5, wherein the nickel-based cathode active material has a nickel content of greater than 80%.

### Claim 9 (depends on 5)

The lithium-ion battery of claim 5, wherein the vinylene carbonate is 0.5 wt % to 3.0 wt % of the electrolyte.

### Claim 10 (depends on 5)

The lithium-ion battery of claim 5, wherein the anode active material is graphite.

### Claim 11 (depends on 5)

The lithium-ion battery of claim 5, wherein the anode active material is a silicon-based material.

### Claim 12

A liquid electrolyte for a lithium-ion battery, comprising:
one or more additives selected from the group consisting of: