EP0715366A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Rechargeable lithium battery having an anode coated by a film containing a specific metal oxide material, process for the production of said anode, and process for the production of said rechargeable lithium battery
Assignee: Canon Inc
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Filing: 1995-11-30
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Granted: —
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Expires: 2015-11-30
Abstract
Abstract An anode (101) for a rechargeable lithium battery which comprises an anode substrate and a coat (102) disposed so as to cover at least a surface of said anode substrate opposed to said cathode (103), said coat comprising a film comprised of a metal oxide material of 1.5 or less in standard electrode potential difference with respect to lithium and capable of intercalating or deintercalating lithium ions dedicated for a battery reaction. A process for producing said anode, characterized in that said film is formed using a polyacid or a peroxo polyacid. A rechargeable lithium battery provided with said anode.
Inventors
- 👤 Soichiro Kawakami
- 👤 Shinya Mishina
- 👤 Naoya Kobayashi
- 👤 Masaya Asao
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 21:28
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0402; H01M4/0421; H01M4/0428; H01M10/00; H01M10/05; H01M4/0404; H01M4/0414; H01M4/0416; H01M4/0419; H01M4/0423; H01M4/0426; H01M4/0438; H01M4/0459; H01M4/13; H01M4/64; H01M4/66; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M4/36; H01M4/48; H01M4/485; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
105 words
A rechargeable lithium battery comprising an anode, a cathode, a separator positioned between said anode and said cathode, and an electrolyte or an electrolyte solution disposed so as to contact with said anode and said cathode, characterized in that said anode comprises an anode substrate and a coat disposed so as to cover at least a surface of said anode substrate opposed to said cathode, said coat comprising a film comprised of a metal oxide material of 1.5 or less in standard electrode potential difference or electromotive force with respect to lithium and capable of intercalating or deintercalating lithium ions dedicated for a battery reaction.
Claim 2
Dependent Claim
34 words
A rechargeable lithium battery according to claim 1, wherein the metal oxide material contains at least an element selected from the group consisting of W, Mo, Ti, V, Nb, Zr, Hf, Ta, and Cr.
Claim 3
Dependent Claim
30 words
A rechargeable lithium battery according to claim 1 or 2, wherein the metal oxide material 1.0 or less in standard electrode potential difference or electromotive force with respect to lithium.
Claim 4
Dependent Claim
19 words
A rechargeable lithium battery according to any of claims 1 to 3, wherein the metal oxide material is amorphous.
Claim 5
Dependent Claim
19 words
A rechargeable lithium battery according to any of claims 1 to 3, wherein the metal oxide material is polycrystalline.
Claim 6
Dependent Claim
29 words
A rechargeable lithium battery according to any of claims 1 to 5, wherein the film comprised of the metal oxide material is a film formed using a polyacid solution.
Claim 7
Dependent Claim
30 words
A rechargeable lithium battery according to any of claims 1 to 5, wherein the film comprised of the metal oxide material is a film formed using a peroxo polyacid solution.
Claim 8
Dependent Claim
24 words
A rechargeable lithium battery according to any of claims 1 to 7, wherein the metal oxide material contains a lithium element upon operating charging.
Claim 9
Dependent Claim
36 words
A rechargeable lithium battery according to any of claims 1 to 8, wherein the film comprised of the metal oxide material is a film comprising a composite said metal oxide material and a high molecular material.
Claim 10
Dependent Claim
16 words
A rechargeable lithium battery according to claim 9, wherein the high molecular material is a fluororesin.
Claim 11
Dependent Claim
18 words
A rechargeable lithium battery according to claim 9, wherein the high molecular material contains an inorganic metal element.
Claim 12
Dependent Claim
31 words
A rechargeable lithium battery according to any of claims 1 to 8, wherein the film comprised of the metal oxide material is disposed on a roughened surface of the anode substrate.
Claim 13
Dependent Claim
28 words
A rechargeable lithium battery according to any of claims 9 to 11, wherein the film comprising the composite is disposed on a roughened surface of the anode substrate.
Claim 14
Dependent Claim
35 words
A rechargeable lithium battery according to any of claims 1 to 13, wherein the anode further comprises a film of an organic high molecular material disposed so as to cover the surface of the coat.
Claim 15
Dependent Claim
37 words
A rechargeable lithium battery according to claim 14, wherein the organic high molecular material film is insoluble to the electrolyte solution, not decomposed upon charging and discharging reactions and capable of allowing lithium ion to pass through.
Claim 16
Dependent Claim
43 words
A rechargeable lithium battery according to any of the antecedent claims, wherein lithium is deposited upon operating charging such that lithium granules are grown uniformly and substantially two-dimensionally in the coat and at interfaces of the coat without causing a dendrite of lithium.
Claim 17
Dependent Claim
22 words
A rechargeable lithium battery according to any of the antecedent claims, wherein the anode substrate contains at least an electrically conductive material.
Claim 18
Dependent Claim
26 words
A rechargeable lithium battery according to any of claims 1 to 16, wherein the anode substrate contains an electrically conductive material and an anode active material.
Claim 19
Dependent Claim
37 words
A rechargeable lithium battery according to any of the antecedent claims, wherein the anode substrate contains at least an element selected from the group consisting of Al, Ti, Mg, Cu, Ni, Fe, Pt, Au, C, and Li.
Claim 20
Dependent Claim
61 words
A process for producing an anode for a rechargeable lithium battery, said process comprising the steps of: (a) providing an anode substrate and a solution of a polyacid, and (b) applying said polyacid solution onto a surface of said anode substrate to form a film of a metal oxide material so as to cover the said surface of the anode substrate.
Claim 21
Dependent Claim
30 words
The process according to claim 20, wherein the polyacid contains at least an element selected from the group consisting of W, Mo, Ti, V, Nb, Zr, Hf, Ta, and Cr.
Claim 22
Dependent Claim
17 words
The process according to claim 20 or 21, wherein the anode substrate contains an electrically conductive material.
Claim 23
Dependent Claim
22 words
The process according to claim 20 or 21, wherein the anode substrate contains an electrically conductive material and an anode active material.
Claim 24
Dependent Claim
36 words
The process according to any of claims 20 to 23, wherein the anode substrate contains at least an element selected from the group consisting of Al, Ti, Mg, Cu, Ni, Fe, Pt, Au, C, and Li.
Claim 25
Dependent Claim
63 words
A process for producing an anode for a rechargeable lithium battery, said process comprising the steps of: (a) providing an anode substrate and a solution of a peroxo polyacid, and (b) applying said peroxo polyacid solution onto a surface of said anode substrate to form a film of a metal oxide film so as to cover the said surface of the anode substrate.
Claim 26
Dependent Claim
31 words
The process according to claim 25, wherein the peroxo polyacid contains at least an element selected from the group consisting of W, Mo, Ti, V, Nb, Zr, Hf, Ta, and Cr.
Claim 27
Dependent Claim
17 words
The process according to claim 25 or 26, wherein the anode substrate contains an electrically conductive material.
Claim 28
Dependent Claim
22 words
The process according to claim 25 or 26, wherein the anode substrate contains an electrically conductive material and an anode active material.
Claim 29
Dependent Claim
36 words
The process according to any of claims 25 to 28, wherein the anode substrate contains at least an element selected from the group consisting of Al, Ti, Mg, Cu, Ni, Fe, Pt, Au, C, and Li.
Claim 30
Dependent Claim
87 words
A process for producing a rechargeable lithium battery comprising an anode, a separator, a cathode, an electrolyte or an electrolyte solution, and a housing, said process is characterized by including a step of forming said anode, said step of forming said anode comprising: (a) providing an anode substrate and a solution of a polyacid, and (b) applying said polyacid solution onto a surface of said anode substrate to form a film of a metal oxide material so as to cover the said surface of the anode substrate.
Claim 31
Dependent Claim
30 words
The process according to claim 30, wherein the polyacid contains at least an element selected from the group consisting of W, Mo, Ti, V, Nb, Zr, Hf, Ta, and Cr.
Claim 32
Dependent Claim
17 words
The process according to claim 30 or 31, wherein the anode substrate contains an electrically conductive material.
Claim 33
Dependent Claim
22 words
The process according to claim 30 or 31, wherein the anode substrate contains an electrically conductive material and an anode active material.
Claim 34
Dependent Claim
36 words
The process according to any of claims 30 to 33, wherein the anode substrate contains at least an element selected from the group consisting of Al, Ti, Mg, Cu, Ni, Fe, Pt, Au, C, and Li.
Claim 35
Dependent Claim
89 words
A process for producing a rechargeable lithium battery comprising an anode, a separator, a cathode, an electrolyte or an electrolyte solution, and a housing, said process is characterized by including a step of forming said anode, said step of forming said anode comprising: (a) providing an anode substrate and a solution of a peroxo polyacid, and (b) applying said peroxo polyacid solution onto a surface of said anode substrate to form a film of a metal oxide material so as to cover the said surface of the anode substrate.
Claim 36
Dependent Claim
31 words
The process according to claim 35, wherein the peroxo polyacid contains at least an element selected from the group consisting of W, Mo, Ti, V, Nb, Zr, Hf, Ta, and Cr.
Claim 37
Dependent Claim
17 words
The process according to claim 35 or 36, wherein the anode substrate contains an electrically conductive material.
Claim 38
Dependent Claim
22 words
The process according to claim 35 or 36, wherein the anode substrate contains an electrically conductive material and an anode active material.
Claim 39
Dependent Claim
36 words
The process according to any of claims 35 to 38, wherein the anode substrate contains at least an element selected from the group consisting of Al, Ti, Mg, Cu, Ni, Fe, Pt, Au, C, and Li.
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