# US 12,009,516 B2 · Fast charging lithium-ion battery

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- Number: US 12,009,516 B2
- Document ID: US12009516B2
- Status: Granted
- Kind: B2
- Application number: 17/026,021
- Filed: 2020-09-18
- Published: 2021-03-18
- Granted: 2024-06-11
- Earliest claimed: 2019-09-18
- Assignees: Industrial Technology Research Institute
- Applicants: Industrial Technology Research Institute
- Inventors: Deng-Tswen Shieh; Sheng-Fa Yeh; Shih-Chieh Liao; Ching-Yu Chen; Hao-Tzu Huang
- Web page: https://patentgrep.com/patent/US12009516B2

## CPC

- H01M 4/0404: {by coating on electrode collectors}
- H01M 4/485: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence)
- H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
- H01M 4/366: {as layered products}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 2004/021: {Physical characteristics, e.g. porosity, surface area}
- H01M 2004/027: {Negative electrodes}
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A fast charging lithium-ion battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte. The positive electrode plate includes a positive current collector and a positive active material layers. The negative electrode plate includes a negative current collector and negative active material layers. The negative active material layers include titanium niobium oxide, lithium titanate, or a combination thereof. The separator is disposed between the positive electrode plate and the negative electrode plate. The electrolyte contacts the positive electrode plate and the negative electrode plate. The negative active material layers have an effective area corresponding to the positive electrode plate. The negative active material layers have a thickness on one surface of the negative current collector. A ratio of the effective area to the thickness is greater than 2×105 mm.

## Claims

### Claim 1

A fast charging lithium-ion battery, comprising:
a positive electrode plate, comprising a positive active material layer and a positive current collector, wherein the positive active material layer essentially consists of lithium nickel cobalt manganite;
a negative electrode plate, comprising a negative active material layer and a negative current collector, wherein the negative active material layer comprises titanium niobium oxide, lithium titanate or a combination thereof;
a separator disposed between the positive electrode plate and the negative electrode plate;
an electrolyte, contacting the positive electrode plate and the negative electrode plate,
wherein the negative active material layer has an effective area corresponding to and overlapping the positive electrode plate on one surface of the negative current collector, the negative active material layer has a thickness on the one surface of the negative current collector, and a ratio of the effective area to the thickness is between 2.87×105 mm to 2.01×106 mm, the thickness has a range of 38.3 μm to 100 μm.

### Claim 2 (depends on 1)

The fast charging lithium-ion battery according to claim 1, wherein the negative active material layer comprises a combination of titanium niobium oxide and lithium titanate, and a weight percentage of lithium titanate to the negative active material layers is smaller than 60%.

### Claim 3 (depends on 1)

The fast charging lithium-ion battery according to claim 1, wherein the negative active material layer is disposed on one surface or two surfaces of the negative current collector.

### Claim 4 (depends on 1)

The fast charging lithium-ion battery according to claim 1, wherein the positive active material layer is disposed on one surface or two surfaces of the positive current collector.