Lithium secondary battery containing organic peroxide in non-aqueous electrolyte, positive electrode, or negative electrode

• US 8,389,163 B2
• Filed: 03/14/2005
• Issued: 03/05/2013
• Est. Priority Date: 03/16/2004
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Takezawa, Hideharu
• Primary Examiner(s): Crepeau, Jonathan
• Assistant Examiner(s): Buchanan, Jacob
• Application Number:
  US10/592,959
• Publication Number:
  US 20070190419A1
• Time in Patent Office: 2,913 Days
• Field of Search: 429122-225, 429324-347
• US Class Current: 429/324
• CPC Class Codes: C01G 45/1228 of the type [MnO2]n- , e.g. LiMnO2, Li[MxMn1-x]O2
• CPC Class Codes: C01G 51/42 containing alkali metals, e.g. LiCoO2
• CPC Class Codes: C01G 51/50 of the type [MnO2]n- , e.g. Li(CoxMn1-x)O2, Li(MyCoxMn1-x-y)O2
• CPC Class Codes: C01G 53/42 containing alkali metals, e.g. LiNiO2
• CPC Class Codes: C01G 53/50 of the type [MnO2]n- , e.g. Li(NixMn1-x)O2, Li(MyNixMn1-x-y)O2
• CPC Class Codes: C01P 2002/54 one element only
• CPC Class Codes: C01P 2002/74 by peak-intensities or a ratio thereof only
• CPC Class Codes: C01P 2004/52 highly monodisperse size distribution
• CPC Class Codes: C01P 2004/61 Micrometer sized, i.e. from 1-100 micrometer
• CPC Class Codes: C01P 2006/40 Electric properties
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0567 characterised by the additives
• CPC Class Codes: H01M 4/131 Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• CPC Class Codes: H01M 4/134 Electrodes based on metals, Si or alloys
• CPC Class Codes: H01M 4/1395 of electrodes based on metals, Si or alloys
• CPC Class Codes: H01M 4/38 of elements or alloys
• CPC Class Codes: H01M 4/386 Silicon or alloys based on silicon
• CPC Class Codes: 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
• CPC Class Codes: H01M 4/60 of organic compounds
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 : Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries

Abstract

A lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a non-aqueous electrolyte. The positive electrode active material comprises at least one lithium-containing composite oxide represented by the following general formula: Li_xM¹_1−yM²_yO₂ where M¹ and M² are different elements, M¹ is Ni or Co, M² is at least one selected from Ni, Co, Mn, Mg, and Al, 1≦x≦1.05, and 0≦y≦0.7. The negative electrode active material comprises at least one selected from the group consisting of silicon, tin, a silicon-containing alloy, and a tin-containing alloy. The non-aqueous electrolyte includes an organic peroxide.

Claims

1. A lithium secondary battery comprising:

a positive electrode including a positive electrode active material;

a negative electrode including a negative electrode active material; and

a non-aqueous electrolyte,

wherein said positive electrode active material comprises at least one lithium-containing composite oxide represented by the following general formula;

Li_xM¹<sub>1−

y</sub>M²_yO₂

where M¹ and M² are different elements, M¹ being Ni or Co, and M² being at least one selected from Ni, Co, Mn, Mg, and Al, 1≦

x≦

1.05, and 0≦

y≦

0.7,

said negative electrode active material comprises at least one selected from the group consisting of silicon, tin, a silicon-containing alloy, and a tin-containing alloy,

said non-aqueous electrolyte includes m-chloroperoxybenzoic acid, and

said m-chloroperoxybenzoic acid accounts for 0.1 to 5% by weight of said non-aqueous electrolyte.

2. The lithium secondary battery in accordance with claim 1, wherein m-chloroperoxybenzoic acid is further included in said negative electrode.

3. The lithium secondary battery in accordance with claim 1, wherein said negative electrode active material comprises a silicon-containing alloy.

4. The lithium secondary battery in accordance with claim 3, wherein said silicon-containing alloy comprises:

a solid solution including silicon and at least one transition metal element selected from the group consisting of Ti, Ni, Co, Fe, and Cu;

or an alloy including silicon and at least one intermetallic compound selected from the group consisting of TiSi₂, TiSi, CoSi₂, CoSi, FeSi₂, FeSi, NiSi₂, NiSi, and Cu₃Si.

5. The lithium secondary battery in accordance with claim 4, wherein said intermetallic compound is TiSi₂.

6. The lithium secondary battery in accordance with claim 1, wherein m-chloroperoxybenzoic acid is further included in said positive electrode.

7. The lithium secondary battery in accordance with claim 2, wherein m-chloroperoxybenzoic acid is further included in said positive electrode.

8. A lithium secondary battery comprising:

a positive electrode including a positive electrode active material;

a negative electrode including a negative electrode active material; and

a non-aqueous electrolyte,

wherein said positive electrode active material comprises at least one lithium-containing composite oxide represented by the following general formula;

Li_xM¹<sub>1−

y</sub>M²_yO₂

where M¹ and M² are different elements, M¹ being Ni or Co, and M² being at least one selected from Ni, Co, Mn, Mg, and Al, 1≦

x≦

1.05 and 0≦

y≦

0.7,

said negative electrode active material is at least one selected from the group consisting of silicon, tin, a silicon-containing alloy, and a tin-containing alloy, and

said negative electrode includes m-chloroperoxybenzoic acid.

9. A lithium secondary battery comprising:

a positive electrode including a positive electrode active material;

a negative electrode including a negative electrode active material; and

a non-aqueous electrolyte,

wherein said positive electrode active material comprises at least one lithium-containing composite oxide represented by the following general formula;

Li_xM¹<sub>1−

y</sub>M²_yO₂

where M¹ and M² are different elements, M¹ being Ni or Co, M² being at least one selected from Ni, Co, Mn, Mg, and Al, 1≦

x≦

1.05 and 0≦

y≦

0.7,

said negative electrode active material is at least one selected from the group consisting of silicon, tin, a silicon-containing alloy, and a tin-containing alloy, and

said positive electrode includes m-chloroperoxybenzoic acid.