# US 2014/0154570 A1 · Positive electrode material for lithium ion secondary cell and lithium ion secondary cell

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- Number: US 2014/0154570 A1
- Document ID: US20140154570A1
- Status: Published application
- Kind: A1
- Application number: 14/238,747
- Filed: 2012-09-12
- Published: 2014-06-05
- Earliest claimed: 2011-09-22
- Assignees: Fujikura Kasei Co., Ltd.
- Inventors: Takeshi Kan
- Web page: https://patentgrep.com/patent/US20140154570A1

## CPC

- H01M 4/621: {Binders}
- H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
- H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
- H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
- H01M 4/62: Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M 4/622: {being polymers}
- H01M 4/625: {Carbon or graphite}
- H01M 4/1391: of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
- H01M 4/623: {fluorinated polymers}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- Y02E 60/10: Energy storage using batteries
- 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

## Abstract

A positive electrode material for a lithium ion secondary cell, includes: a binding agent in which an active material formed from a lithium metal oxide are dispersed together with barium titanate and conductive carbon.

## Claims

### Claim 1

A positive electrode material for a lithium ion secondary cell, comprising:
a binding agent in which an active material formed from a lithium metal oxide are dispersed together with barium titanate and conductive carbon.

### Claim 2 (depends on 1)

The positive electrode material for a lithium ion secondary cell according to claim 1,
wherein the lithium metal oxide is a composite metal oxide expressed by the following Expression (1):
LiNixMnyCozO2 (1)
(in Expression (1), Li represents lithium, Ni represents nickel, Mn represents manganese, Co represents cobalt, O represents oxygen, and 0<x<1, 0<y<1, 0<z<1, and x+y+z=1 are satisfied.)

### Claim 3 (depends on 1)

The positive electrode material for a lithium ion secondary cell according to claim 1,
wherein the content of the barium titanate is 3.3 to 66.7 parts by mass with respect to 100 parts by mass of the binding agent.

### Claim 4 (depends on 1)

A lithium ion secondary cell comprising:
a positive electrode which is provided with a collector and a mixture layer formed on the collector using the positive electrode material for a lithium ion secondary cell according to claim 1.

### Claim 5 (depends on 2)

The positive electrode material for a lithium ion secondary cell according to claim 2,
wherein the content of the barium titanate is 3.3 to 66.7 parts by mass with respect to 100 parts by mass of the binding agent.