US5478672A
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Nonaqueous secondary battery, positive-electrode active material
Assignee: LG Chem Ltd
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Filing: 1994-12-23
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Granted: 1995-12-26
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Expires: 2014-12-23
Abstract
Abstract A nonaqueous secondary battery comprising: a positive electrode; a negative electrode; and a nonaqueous ion conductor; the negative electrode comprising an active material which contains lithium or enables lithium to intercalate/deintercalate or insertion/desertion; the positive electrode comprising an active material which is a lithium manganese composite oxide having an X-ray diffraction pattern using a CuKα-ray which shows at least three peaks in the ranges between 15.2° and 15.6°, between 18.6° and 18.8°, and between 24.5° and 25.1°, the ratio of a peak intensity in the range between 27° and 33° to a peak intensity in the range between 15.2° and 15.6° being less than 0.02.
Inventors
- 👤 Takehito Mitate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:24
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; H01M4/505; H01M4/52; H01M4/525; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
105 words
A nonaqueous secondary battery comprising: a positive electrode; a negative electrode; and a nonaqueous ion conductor; the negative electrode comprising an active material which contains lithium or enables lithium to intercalate/deintercalate or insertion/desertion; the positive electrode comprising an active material which is a lithium manganese composite oxide having an X-ray diffraction pattern using a CuKα-ray which shows at least three peaks in the ranges between 15.2° and 15.8°, between 18.8° and 18.8°, and between 24.5° and 25.1°, the ratio of a peak intensity in the range between 27° and 33° to a peak intensity in the range between 15.2° and 15.8° being less than 0.02.
Claim 2
Dependent Claim
105 words
A nonaqueous secondary battery comprising: a positive electrode; a negative electrode; and a nonaqueous ion conductor; the negative electrode comprising an active material which contains lithium or enables lithium to intercalate/deintercalate or insertion/desertion; the positive electrode comprising an active material which is a lithium manganese composite oxide having an X-ray diffraction pattern using a CuKα-ray which shows at least three peaks in the ranges between 15.2° and 15.8°, between 18.8° and 18.8°, and between 24.5° and 25.1°, the ratio of a peak intensity in the range between 27° and 33° to a peak intensity in the range between 15.2° and 15.8° being less than 0.02.
Claim 3
Dependent Claim
35 words
A nonaqueous secondary battery of claim 1, wherein the ratio of the peak intensity in the range between 18.8° and 18.8° to that in the range between 15.2° and 15.6° ranges from 0.02 to 1.5.
Claim 4
Dependent Claim
21 words
A nonaqueous secondary battery of claim 1, wherein the lithium manganese composite oxide has a composition formula; Li.sub.x MnO.sub.y (0.8<x<1.2, 1.9<y<2.2).
Claim 5
Dependent Claim
20 words
A nonaqueous secondary battery of claim 1, wherein the negative-electrode active material is a lithium intercalation or insertion carbon material.
Claim 6
Dependent Claim
85 words
A nonaqueous secondary battery of claim 1, wherein the active material of the positive electrode is a lithium manganese composite oxide formed by mixing a manganese inorganic compound with a lithium organic or inorganic compound to prepare a lithium manganese compound mixture; and calcinating the lithium manganese compound mixture under the condition at a temperature between about 400° C. and about 2000° C. in an oxidizing or inert atmosphere containing substantially 0% to about 10% by volume of oxygen to obtain lithium manganese composite oxide.
Claim 7
Dependent Claim
71 words
A nonaqueous secondary battery of claim 1, wherein the active material of the positive electrode is a lithium manganese composite oxide formed by mixing a manganese inorganic compound with a lithium organic or inorganic compound to prepare a lithium manganese compound mixture; and calcinating the lithium manganese compound mixture under the condition at a temperature of about 250° C. or higher in a reducing atmosphere to obtain lithium manganese composite oxide.
Claim 8
Dependent Claim
103 words
A nonaqueous secondary battery of claim 5, wherein the manganese inorganic compound is selected from the group consisting of MnO 2 of α-type, β-type, δ-type, γ-type, ε-type, η-type, λ-type, electrolytic type and Ramsdellite type, Mn 5 O 8 , Mn 2 O 3 , MnOOH and LiMn 2 O 4 , and the lithium inorganic or organic compound is selected from the group consisting of lithium chloride, lithium bromide, lithium iodide, lithium hydroxide, lithium oxide, lithium nitrate, lithium carbonate, lithium formate, lithium acetate, lithium lactate, lithium citrate, lithium oxalate, lithium benzoate, lithium pyruvate, lithium stearate, lithium tartrate and Li 2 MnO 3 .
Claim 9
Dependent Claim
103 words
A nonaqueous secondary battery of claim 6, wherein the manganese inorganic compound is selected from the group consisting of MnO 2 of α-type, β-type, δ-type, γ-type, ε-type, η-type, λ-type, electrolytic type and Ramsdellite type, Mn 5 O 8 , Mn 2 O 3 , MnOOH and LiMn 2 O 4 , and the lithium inorganic or organic compound is selected from the group consisting of lithium chloride, lithium bromide, lithium iodide, lithium hydroxide, lithium oxide, lithium nitrate, lithium carbonate, lithium formate, lithium acetate, lithium lactate, lithium citrate, lithium oxalate, lithium benzoate, lithium pyruvate, lithium stearate, lithium tartrate and Li 2 MnO 3 .
Claim 10
Dependent Claim
71 words
A positive electrode comprising active material which is a lithium manganese composite oxide having an X-ray diffraction pattern using a CuKα-ray which shows at least three peaks in the ranges between 15.2° and 15.6°, between 18.6° and 18.8°, and between 24.5° and 25.1°, the ratio of a peak intensity in the range between 27° and 33° to a peak intensity in the range between 15.2° and 15.6° being less than 0.02.
Claim 11
Dependent Claim
71 words
A positive electrode comprising active material which is a lithium manganese composite oxide having an X-ray diffraction pattern using a CuKα-ray which shows at least three peaks in the ranges between 15.2° and 15.6°, between 18.6° and 18.8°, and between 24.5° and 25.1°, the ratio of a peak intensity in the range between 27° and 33° to a peak intensity in the range between 15.2° and 15.6° being less than 0.02.
Claim 12
Dependent Claim
34 words
A positive electrode of claim 9, wherein the ratio of the peak intensity in the range between 18.6° and 18.8° to that in the range between 15.2° and 15.6° ranges from 0.02 to 1.5.
Claim 13
Dependent Claim
20 words
A positive electrode of claim 9, wherein the lithium manganese composite oxide has a composition formula; Li.sub.x MnO.sub.y (0.8<x<1.2, 1.9<y<2.2).
Claim 14
Dependent Claim
76 words
A positive electrode of claim 9, wherein the lithium manganese composite oxide formed by mixing a manganese inorganic compound with a lithium organic or inorganic compound to prepare a lithium manganese compound mixture; and calcinating the lithium manganese compound mixture under the condition at a temperature between about 400° C. and about 2000° C. in an oxidizing or inert atmosphere containing substantially 0% to about 10% by volume of oxygen to obtain lithium manganese composite oxide.
Claim 15
Dependent Claim
62 words
A positive electrode of claim 9, wherein the lithium manganese composite oxide formed by mixing a manganese inorganic compound with a lithium organic or inorganic compound to prepare a lithium manganese compound mixture; and calcinating the lithium manganese compound mixture under the condition at a temperature of about 250° C. or higher in a reducing atmosphere to obtain lithium manganese composite oxide.
Claim 16
Dependent Claim
102 words
A positive electrode of claim 9, wherein the manganese inorganic compound is selected from the group consisting of MnO 2 of α-type, β-type, δ-type, γ-type, ε-type, η-type, λ-type, electrolytic type and Ramsdellite type, Mn 5 O 8 , Mn 2 O 3 , MnOOH and LiMn 2 O 4 , and the lithium organic or inorganic compound is selected from the group consisting of lithium chloride, lithium bromide, lithium iodide, lithium hydroxide, lithium oxide, lithium nitrate, lithium carbonate, lithium formate, lithium acetate, lithium lactate, lithium citrate, lithium oxalate, lithium benzoate, lithium pyruvate, lithium stearate, lithium tartrate and Li 2 MnO 3 .
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| 3.5 Years (Year 4) | 1998-12-25 | 1999-06-26 | 1999-12-26 | $2000.00 | Window Closed / Lapsed |
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