# US 2014/0193715 A1 · Lithium Secondary Battery

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- Number: US 2014/0193715 A1
- Document ID: US20140193715A1
- Status: Published application
- Kind: A1
- Application number: 13/946,996
- Filed: 2013-07-19
- Published: 2014-07-10
- Earliest claimed: 2013-01-10
- Assignees: Samsung SDI Co., Ltd.
- Applicants: Samsung SDI Co., Ltd.
- Inventors: Sung-Soo Park
- Web page: https://patentgrep.com/patent/US20140193715A1

## CPC

- 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 4/62: Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M 10/4235: {Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence)}
- C01G 23/047: Titanium dioxide
- C01G 23/0536: {by hydrolysing chloride-containing salts}
- C01P 2002/52: containing elements as dopants
- C01P 2002/54: one element only
- C01P 2006/12: Surface area
- C01P 2006/14: Pore volume
- C01P 2006/16: Pore diameter
- H01M 10/052: Li-accumulators
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A lithium secondary battery including an anode active material including mesoporous TiO2 doped with a heteroatom.

## Claims

### Claim 1

A lithium secondary battery comprising:
a cathode comprising a cathode active material;
an anode comprising an anode active material comprising mesoporous TiO2 doped with a heteroatom; and
an electrolyte.

### Claim 2 (depends on 1)

The lithium secondary battery of claim 1, wherein the mesoporous TiO2 doped with a heteroatom comprises at least one atom selected from the group consisting of a Group 15 element and a Group 16 element.

### Claim 3 (depends on 1)

The lithium secondary battery of claim 1, wherein the mesoporous TiO2 doped with a heteroatom comprises at least one atom selected from the group consisting of nitrogen (N), sulfur (S), and phosphorous (P).

### Claim 4 (depends on 1)

The lithium secondary battery of claim 1, wherein the mesoporous TiO2 doped with a heteroatom is in an anatase phase.

### Claim 5 (depends on 1)

The lithium secondary battery of claim 1, wherein an amount of the mesoporous TiO2 doped with a heteroatom is in a range of about 0.1 to about 1.0 parts by weight based on 100 parts by weight of the total anode active material.

### Claim 6 (depends on 1)

The lithium secondary battery of claim 1, wherein an average diameter of pores in the mesoporous TiO2 doped with a heteroatom is in a range of about 2 to about 15 nm.

### Claim 7 (depends on 1)

The lithium secondary battery of claim 1, wherein an average diameter of pores in the mesoporous TiO2 doped with a heteroatom is in a range of about 2 to about 10 nm.

### Claim 8 (depends on 1)

The lithium secondary battery of claim 1, wherein a Brunauer-Emmett-Teller (BET) specific surface area of the mesoporous TiO2 doped with a heteroatom is in a range of about 100 to about 400 m2/g.

### Claim 9 (depends on 1)

The lithium secondary battery of claim 1, wherein a Brunauer-Emmett-Teller (BET) specific surface area of the mesoporous TiO2 doped with a heteroatom is in a range of about 100 to about 350 m2/g.

### Claim 10 (depends on 1)

The lithium secondary battery of claim 1, wherein a Brunauer-Emmett-Teller (BET) specific surface area of the mesoporous TiO2 doped with a heteroatom is in a range of about 100 to about 300 m2/g.

### Claim 11 (depends on 1)

The lithium secondary battery of claim 1, wherein a pore volume of the mesoporous TiO2 doped with a heteroatom is in a range of about 0.1 to about 1.0 cc/g.

### Claim 12 (depends on 1)

The lithium secondary battery of claim 1, wherein a pore volume of the mesoporous TiO2 doped with a heteroatom is in a range of about 0.2 to about 0.8 cc/g.

### Claim 13 (depends on 1)

The lithium secondary battery of claim 1, wherein a pore volume of the mesoporous TiO2 doped with a heteroatom is in a range of about 0.2 to about 0.6 cc/g.

### Claim 14 (depends on 1)

The lithium secondary battery of claim 1, wherein the anode active material further comprises lithium titanate.

### Claim 15 (depends on 14)

The lithium secondary battery of claim 14, wherein the lithium titanate comprises lithium titanate in a spinel phase, an anatase phase, or a ramsdellite phase.