US5401599A
Expired / Lapsed
US
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Non-aqueous electrolyte secondary battery and method of producing the same
Assignee: Seiko Instruments Inc
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Filing: 1993-09-28
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Granted: 1995-03-28
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Expires: 2013-09-28
Abstract
Abstract A non-aqueous electrolyte secondary battery has a negative electrode, a positive electrode and a non-aqueous electrolyte with lithium ion conductivity. A composite oxide produced from a metal or a metalloid and lithium represented by composition formula LixMO (where M represents metals or metalloids other than alkali metals, and x satisifies 0</=x) is used as an active material of one or both of the negative electrode and the positive electrode. The battery exhibits a large charging/discharging capacity and a high energy density together with smaller polarization (internal resistance) on charging and discharging which facilitates a large current charging and discharging with a long cycle life and reduces deterioration due to excess charging and excess discharging.
Inventors
- 👤 Kensuke Tahara
- 👤 Hideki Ishikawa
- 👤 Tsugio Sakai
- 👤 Akifumi Sakata
- 👤 Fumiharu Iwasaki
- 👤 Seiji Yahagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:35
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; H01M4/505; H01M10/00; H01M10/05; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0569; H01M10/052; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/164; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
67 words
A non-aqueous electrolyte secondary battery comprising: a negative electrode; a positive electrode; and a non-aqueous electrolyte with lithium ion conductivity; wherein either one or both of the negative and positive electrodes has an active material comprised of a composite oxide represented by composition formula Li x MO, where M represents one or more elements selected from metalloids and metals other than alkali metals, and x satisifies 0≦x.
Claim 2
Dependent Claim
67 words
A non-aqueous electrolyte secondary battery comprising: a negative electrode; a positive electrode; and a non-aqueous electrolyte with lithium ion conductivity; wherein either one or both of the negative and positive electrodes has an active material comprised of a composite oxide represented by composition formula Li x MO, where M represents one or more elements selected from metalloids and metals other than alkali metals, and x satisifies 0≦x.
Claim 3
Dependent Claim
29 words
A non-aqueous electrolyte secondary battery according to claim 1; wherein the non-aqueous electrolyte comprises at least a non-aqueous solvent containing ethylene carbonate and a supporting electrolyte containing lithium ion.
Claim 4
Dependent Claim
71 words
A non-aqueous electrolyte secondary battery comprising: a negative electrode; a positive electrode; and a non-aqueous electrolyte with lithium ion conductivity; wherein the negative electrode has an active material comprised of a composite oxide represented by composition formula Li x MO, where M is one kind or more kinds of elements selected from Mn, Ti, Zn and metals and metalloids selected from Group 14 of the periodic table, and x satisfies 0≦x.
Claim 5
Dependent Claim
71 words
A non-aqueous electrolyte secondary battery comprising: a negative electrode; a positive electrode; and a non-aqueous electrolyte with lithium ion conductivity; wherein the negative electrode has an active material comprised of a composite oxide represented by composition formula Li x MO, where M is one kind or more kinds of elements selected from Mn, Ti, Zn and metals and metalloids selected from Group 14 of the periodic table, and x satisfies 0≦x.
Claim 6
Dependent Claim
29 words
A non-aqueous electrolyte secondary battery according to claim 3; wherein the non-aqueous electrolyte comprises at least a non-aqueous solvent containing ethylene carbonate and a supporting electrolyte containing lithium ion.
Claim 7
Dependent Claim
124 words
A non-aqueous electrolyte secondary battery comprising: a negative electrode; a positive electrode; and a non-aqueous electrolyte with lithium ion conductivity; wherein the negative electrode has an active material comprised of a composite oxide represented by composition formula Li x MO, where M represents one or more elements selected from metalloids and metals other than alkali metals, and x satisfies 0≦x; and wherein the positive electrode has an active material comprised of a composite oxide represented by composition formula Li a T b L c O 2 and has a layer-like structure, where T is one or more transition metal elements, L is one or more metalloid elements selected from boron B and silicon Si, and a, b, and c satisfy 0<a≦1.15, 0.85≦b+c≦1.3, and 0≦c.
Claim 8
Dependent Claim
124 words
A non-aqueous electrolyte secondary battery comprising: a negative electrode; a positive electrode; and a non-aqueous electrolyte with lithium ion conductivity; wherein the negative electrode has an active material comprised of a composite oxide represented by composition formula Li x MO, where M represents one or more elements selected from metalloids and metals other than alkali metals, and x satisfies 0≦x; and wherein the positive electrode has an active material comprised of a composite oxide represented by composition formula Li a T b L c O 2 and has a layer-like structure, where T is one or more transition metal elements, L is one or more metalloid elements selected from boron B and silicon Si, and a, b, and c satisfy 0<a≦1.15, 0.85≦b+c≦1.3, and 0≦c.
Claim 9
Dependent Claim
29 words
A non-aqueous electrolyte secondary battery according to claim 5; wherein the non-aqueous electrolyte comprises at least a non-aqueous solvent containing ethylene carbonate and a supporting electrolyte containing lithium ion.
Claim 10
Independent Claim
78 words
A method for producing a non-aqueous electrolyte secondary battery having a negative electrode, a positive electrode and a non-aqueous electrolyte with lithium ion conductivity, the method comprising: incorporating lithium ion into a monoxide MO of a metal or a metalloid by electrochemical reaction; and producing a composite oxide Li x MO of the metal or the metalloid and lithium inside the battery after assembly of the battery, or inside or outside the battery during production of the battery.
Claim 11
Independent Claim
78 words
A method for producing a non-aqueous electrolyte secondary battery having a negative electrode, a positive electrode and a non-aqueous electrolyte with lithium ion conductivity, the method comprising: incorporating lithium ion into a monoxide MO of a metal or a metalloid by electrochemical reaction; and producing a composite oxide Li x MO of the metal or the metalloid and lithium inside the battery after assembly of the battery, or inside or outside the battery during production of the battery.
Claim 12
Dependent Claim
63 words
A non-aqueous electrolyte secondary battery comprising: positive and negative electrodes separated by a non-aqueous electrolyte capable of conducting lithium ions, at least one of the positive and negative electrodes being comprised of an active material composed of a composite oxide Li x MO, where M is one or more elements selected from metalloids and metals other than alkali metals, and x is 0≦x.
Claim 13
Dependent Claim
63 words
A non-aqueous electrolyte secondary battery comprising: positive and negative electrodes separated by a non-aqueous electrolyte capable of conducting lithium ions, at least one of the positive and negative electrodes being comprised of an active material composed of a composite oxide Li x MO, where M is one or more elements selected from metalloids and metals other than alkali metals, and x is 0≦x.
Claim 14
Dependent Claim
42 words
A non-aqueous electrolyte secondary battery according to claim 8; wherein the negative electrode has an active material composed of a composite oxide Li x MO, where M is one or more metalloids and metals selected from Group 14 of the periodic table.
Claim 15
Dependent Claim
65 words
A non-aqueous electrolyte secondary battery according to claim 9; wherein the positive electrode has an active material composed of a composite oxide Li a T b L c O 2 , where T is one or more transition elements, L is one or more metalloid elements selected from the group consisting of boron and silicon, and a, b and c are 0<a≦1.15, 0.85≦b+c≦1.3, and 0≦c.
Claim 16
Dependent Claim
17 words
A non-aqueous electrolyte secondary battery according to claim 10; wherein the positive electrode has a layered structure.
Claim 17
Dependent Claim
23 words
A non-aqueous electrolyte secondary battery according to claim 11; wherein the non-aqueous electrolyte includes a non-aqueous solvent and an electrolyte containing lithium ions.
Claim 18
Dependent Claim
23 words
A non-aqueous electrolyte secondary battery according to claim 9; wherein the non-aqueous electrolyte includes a non-aqueous solvent and an electrolyte containing lithium ions.
Claim 19
Dependent Claim
65 words
A non-aqueous electrolyte secondary battery according to claim 8; wherein the positive electrode has an active material composed of a composite oxide Li a T b L c O 2 , where T is one or more transition elements, L is one or more metalloid elements selected from the group consisting of boron and silicon, and a, b and c are 0<a≦1.15, 0.85≦b+c≦1.3, and 0≦c.
Claim 20
Dependent Claim
17 words
A non-aqueous electrolyte secondary battery according to claim 14; wherein the positive electrode has a layered structure.
Claim 21
Dependent Claim
23 words
A non-aqueous electrolyte secondary battery according to claim 14; wherein the non-aqueous electrolyte includes a non-aqueous solvent and an electrolyte containing lithium ions.
Claim 22
Dependent Claim
23 words
A non-aqueous electrolyte secondary battery according to claim 8; wherein the non-aqueous electrolyte includes a non-aqueous solvent and an electrolyte containing lithium ions.
Claim 23
Dependent Claim
32 words
A non-aqueous electrolyte secondary battery according to claim 8; wherein M is one or more elements selected from Mn, Ti, Zn, metalloids and metals selected from Group 14 of the periodic table.
Claim 24
Dependent Claim
23 words
A non-aqueous electrolyte secondary battery according to claim 18; wherein the non-aqueous electrolyte includes a non-aqueous solvent and an electrolyte containing lithium ions.
References Cited (Backward Citations)
US4980251A
Cited
US5011752A
Cited
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